Northwest Renal Network

 

Back to the Basics: Increasing the Use of Arterial

Venous Fistulas in Hemodialysis Patients

 

Authors: Michelle Ledeen, BSN, RN, CNN; Lorabeth Lawson, MPP and Jim Buss, MA, CDP

 

Abstract (Executive Summary)

 

Description and Background:

 

 “Back to the Basics” addresses the national ESRD Program priority of maximizing placement and use of arterial venous fistulae (AVF) in both incident and prevalent hemodialysis patients.  Northwest Renal Network analyzed data from the National Surveillance of Dialysis-Associated Diseases (CDC) survey and found that aggregated data indicated that in December 2001, close to 44% of hemodialysis patients in our Network were using an AV fistula for access. Overall, this meets the DOQI Access Guideline #29. However, there was substantial variation among our individual facilities, with a range of 20% to 90% of patients utilizing AVFs. 

 

Purpose and Goals:

 

Our purpose was to provide education and tools to the access decision makers (physicians and surgeons) associated with our intervention facilities (facilities with <40% HD patients utilizing AVFs per 2001 CDC data) on methods of vascular assessment, AVF creation and AVF maintenance used by two of their peers in the renal community who had achieved >90% AVF rates in their own patient population.  We identified two experts from Olympia, Washington: Dr. Vo Nguyen, a nephrologist, and his vascular access surgeon partner, Dr. Chris Griffith. We drew on their experience to help in our project.  They were on our project design team and our key players in taking a spread model approach to disseminating information regarding creation and management of this preferred mode of access out into our Network community. 

 

Methodology:

 

The Network sponsored four regional half-day workshops targeted to nephrologists, vascular access surgeons and interventional radiologists as well as vascular access managers from our intervention facilities.  Dr. Nguyen and Dr. Griffith discussed their experience in achieving >90% AV fistula rate and zero AV grafts in their patients, who have similar high co-morbidities as most other dialysis patient groups.  Their predominant strategies are: vein mapping all patients to identify potential veins for AVF, vascular access planning, elimination of all AV grafts by conversion, vein transposition techniques and a collaborative partnership.  We also had Carolyn Barclay, RN, CNN discuss her vascular access management role and the advantages of a vascular access management program.  Steve Alford, a nurse educator from Medisystems, discuss the buttonhole needle technique, which Dr. Nguyen says is necessary in a high-AV fistula community.

 

Summary of Findings:

 

Our goal was to achieve at least a 2.5 percentage point increase in the prevalent AVF rate among hemodialysis patients in our target population (HD patients receiving care at intervention facilities in December 2002).  We recognized that we would only have six to eight months post intervention for change to be reflected.  Data obtained from the 2002 CDC Survey reveals a statistically significant (p= <0.001) increase in the prevalent AVF rate in our target population, of 8.6 percentage points.

 

We have queried the physicians and the vascular access managers associated with the intervention facilities who attended our workshops about their practice changes since the meeting.  Most have reported practice changes based on information they received at the “Back to the Basics” meetings and believe their AVF rates have increased.  Many stated that their attitudes toward AVF placement have shifted and they make more of an effort to place and promote AVFs in primary and secondary accesses.  Our Board of Directors funded four additional Back to the Basics meetings to share this information with other physicians in our ESRD community. 

 

Recommendations:

 

We witnessed value in bringing the nephrologists, surgeons and interventional radiologists together to learn from each other and have an opportunity to discuss barriers and solutions to increasing the use of AVFs in their hemodialysis patients and develop collaborative relationships with each other and with the Vascular Access Managers from the dialysis facilities.  We have heard from our attendees that there is a great need for education of staff in the hemodialysis units to learn improved techniques for assessment and cannulation of AVFs if these higher rates are to be encouraged and sustained. 


Introduction and Objectives

 

A hemodialysis patient’s vascular access is truly his/her lifeline without which hemodialysis would not be possible.  Although no type of access in current use consistently provides a blood flow that is adequate to meet any prescription, lasts for the life of the patient and has a low rate of complications, the AVF comes closest to being “ideal” over both AV grafts and indwelling catheters.  In 1997, the National Kidney Foundation published the Dialysis Outcomes Quality Initiatives (NKF-DOQI) Clinical Practice Guidelines for Vascular Access, which concluded that the AVF is the primary choice of access. 

 

The NKF-DOQI Practice Guidelines workgroup recommended an AVF placement goal of 50% in incident patients with an AVF prevalence rate of 40% (Guideline #29).   Hemodialysis vascular access utilization characteristics in U.S. dialysis population per the 2002 Clinical Performance Measures (CPM) Project determined that 31% of prevalent patients were dialyzed using an AVF (October-December 2001 data).  Northwest Renal Network had 45% AVF utilization from that same time period in prevalent in-center hemodialysis patients.  This data was validated by the more complete, facility-specific data derived from the 2001 CDC survey, which reported a 44% prevalent AVF rate in our Network’s prevalent hemodialysis patients.

 

Overall our Network’s rates met the K/DOQI >40% AVF rate guideline for prevalent patients, but the Northwest Renal Network’s Medical Review Board (MRB) began looking at the issue more closely as substantial variation was noted facility to facility.  An opportunity for improvement existed in the range, which went from a high of 90% to a low of 20% AVF utilization rates.  The MRB believed that intervention at these <40% AVF facilities could improve patient outcomes by not only increasing the use of AV fistulas, but also reduce the high catheter use rate and associated complications, including infections, hospitalization and mortality.

 

After the opportunity for improving AVF rates was identified, a root cause analysis conducted by our MRB AVF Sub-committee in February 2002 produced three dominant barriers to a higher AVF rate.  The top three root causes identified were:

 

1)       Failure of nephrologists to act as Vascular Access Team Coordinators.  This includes making recommendations to vascular surgeons, assisting in vein preservation and mapping, and working closely with HD unit staff to assure knowledge and skills regarding access and cannulation.

2)       Lack of AVF training for vascular access surgeons, including assessment skills, vein mapping and surgical techniques.  Surgical training programs place little emphasis on vascular access approaches, techniques and troubleshooting, especially for the more complicated procedures.

3)       Late referral, or non-referral, to nephrology, causing the need for temporary catheters, which may impact on future access and cause a sense of urgency for a working permanent access.

 

The goals for our intervention focused on the first two root causes.  The third root cause may be indirectly affected by our intervention, but was not a main barrier to increasing the use of AVF that we concentrated on in this project, nor is this patient/provider population easily accessible to Network organizations. 

 

The broad goal of this project was to decrease morbidity and improve the quality of life for hemodialysis patients.  Since AVFs have been shown to have a longer life with fewer maintenance procedures required than AV grafts and catheters, patients utilizing this form of access require fewer interventions with their concomitant risks.  If patients are getting adequate blood flow from their access, having fewer infections, not needing to schedule interventional procedures for complications, then health and quality of life will be improved.  There is also financial benefit to the Medicare program as patients experience fewer access-related hospitalizations, do not require additional procedures and medications, and may be more likely to maintain a regular employment schedule. (See Reference list, appendix A)

 

Northwest Renal Network’s objective was to raise the AVF rate in our targeted intervention population (prevalent in-center hemodialysis patients at facilities with less than 40% of their patients with viable AVFs) by at least two and one half percentage points.  An increase from thirty-one and one half percent AVFs to thirty-four percent AVFs would meet this goal.  We anticipated that this would require at least seventy-five additional AVFs at the end of 2002 as compared to 2001.  We initiated the project with 46 intervention facilities (43% of our facilities) that met the <40% AVF rate criteria (serving 2,992 patients).  During the course of this project, one of the intervention units closed.

 

Another important intervention objective was to convince nephrologists and surgeons to place and maintain more AVFs in all patients.  We recognized that it would be difficult to observe and measure a large effect in incident patients during the short time frame of this project.  However, we plan to continue to monitor and track prevalent AVF rates for several years, which should provide data that captures both prevalent and incident patients in treatment at year end.  Prevalent rates will also reflect whether a third intervention objective was met: to motivate the access team to convert catheters and AV grafts to AVFs.  While we expected some new patients to receive AVFs and some catheters to be converted to AVFs during this project, we assumed that the most predictable portion of our impact (increasing AVFs) will be in conversions from AV grafts to AVFs.

 

Methods

 

We targeted our initial outreach to the 46 facilities in our Network with <40% of hemodialysis patients utilizing an AVF as of December 2001 (prevalent AVF rates) per the 2001 CDC survey. (This represented 2992 hemodialysis patients and 47% of all hemodialysis patients in treatment at all Network facilities as of December 2001)   Our starting point was to identify personnel and affiliated providers to invite to attend our educational workshops entitled “Back to the Basics: Increasing the Use of AV Fistulas in Hemodialysis Patients”.  In February 2002, a letter from our Medical Review Board Chairperson was sent to the Administrators and Medical Directors of the identified facilities describing the opportunity for improvement in our Network, the objectives, and dates and locations of our four intervention meetings.  We enclosed a colorful bar graph depicting all Network #16 facility (blinded) AVF rates, with each respective facility’s rate highlighted to emphasize their relative standing.  We asked these contacts to identify one or more nephrologists from their staff who could or would lead a vascular access team and also to identify any vascular access surgeons and interventional radiologists affiliated with their facility/practice who they thought would benefit from, or be interested in, the information discussed at the meetings.  They sent us names and contact information on a form we provided for them.  In March 2002, we sent invitations to all whose names we had received from the above contacts, asking the invitees to submit names of other physicians they would like to have attend the meeting(s).  From these names we built our database of invitees and attendees.

 

The interventions were primarily aimed at physicians.  However, to develop the team concept, we asked each intervention facility Administrator and/or Medical Director to identify a Vascular Access Manager (VAM), in most cases a nurse, interested in being a key member on a vascular access team.  These identified VAMs were invited and urged to attend our educational program.  We attempted to restrict the number of VAMs to one per intervention facility, however additional nurses were invited on the special request of the Medical Directors or Administrators of the intervention facilities and private physician group practices.  These special case VAMs included Directors of Nursing, case managers and QI nurses from large providers who managed one or more of our intervention facilities, case managers from managed care organizations who had patients at these facilities or strong connections with surgeons affiliated with the intervention facilities, and two office nurses who acted as VAMs with invited physician groups.

 

It was recognized that there would be physicians who treated patients at two or more facilities, and that not necessarily all of their patients would be served by our intervention facilities.  We tried to make sure that each intervention facility had at least one representative at the meeting.  All facilities had RSVP’d that someone would be attending; however, in the end, two facilities did not have representation at our meetings.  The two units who were not represented were sent the intervention materials and they were invited to subsequent “non-intervention” meetings, but no other outreach was made.

 

The Intervention Workshop Meetings

 

As we have learned from much of the preventive medicine literature, multifaceted or multi-component interventions have shown the greatest success with physicians.  Although we recognized the concerns about the efficacy of workshops, there was consensus among our Medical Review Board (MRB) and AVF QIP Subcommittee members that the most cost-effective approach to an intervention, which targets physicians, would be a time-limited, intensive, peer-to-peer educational program.  We designed a half-day workshop using a “”Best Demonstrated Practices” (BDP) example from our own community, sharing the positive results of inter-disciplinary collaboration.  The simple model of nephrologist/surgeon collaboration and the critical importance of advance planning proved to be concepts that could be well presented in a focused workshop.  Our predominant meeting features were physician-to-physician presentations, designed to foster the development of better working relationships between the key players: nephrologists and vascular surgeons/interventional radiologists.  We chose our meeting locations based on their proximity to the identified attendees.  We met in Olympia, Washington; Boise, Idaho; Portland, Oregon and Spokane, Washington. 

 

We provided a Best Demonstrated Practices example approach to vascular access management, developed in 1996, tested and proven to work by Dr. Vo Nguyen, a nephrologist from Olympia, Washington.  Dr. Nguyen and his vascular access surgeon partners, represented by Dr. Chris Griffith at three out of four of our meetings (his partner Jim Reus, MD presented at one of our meetings), also of Olympia, have been able to achieve a >90% fistula rate despite all the usual co-morbid factors dialysis patients present.  As described in an abstract Dr. Nguyen presented at the 2000 ASN meeting, his patient population had an average age of 62.2, was 65% female, 73.5% diabetic, 63% had peripheral vascular disease, 28% were obese, and 22% were referred late for access placement.  He and others have concluded that even in patients whose initial access is a graft, as that graft fails and a new access is required, an AVF should be considered.  Patients who come to dialysis urgently (i.e. there has been no time to place an AVF and allow it to mature) are sometimes not considered candidates for AVFs.  Dr. Nguyen believes this should not be a deterrent.  As noted above, Dr. Nguyen achieved high AVF rates despite 22% of his patients being referred late.

 

Dr. Nguyen attributes his accomplishment to teamwork, dedication of well-trained and creative surgeons, pre-op mapping and long-term vascular access planning.  After being encouraged by Dr. Griffith and surgical partners to come up with a system for planning adequate and effective AV accesses in his ESRD patients, Dr. Nguyen started from the ground-up re-educating himself.  He attended meetings with European peers who had achieved high AVF rates, observed access surgery at Dr. Griffith’s invitation and went back to his anatomy books to refresh his assessment skills.  He took off with his new skills by developing a plan for each of his patient’s vascular access transition away from catheters and AV grafts.  Dr. Nguyen set increasingly ambitious goals for himself each year, and has achieved them with the help of his surgeon colleagues and the techniques he shared in his presentation at our workshops.  One of the major strategies that Dr. Nguyen and his colleagues used was conversion of all AV grafts to AVFs, as the grafts showed signs of deteriorating.  His approach is replicable in other practice settings, and his charismatic presentation was pre-tested and approved by our Medical Review Board.

 

Dr. Nguyen, our key speaker, encouraged nephrologists to take on the role of a vascular access team leader and recommended that each facility appoint a vascular access manager (VAM) to oversee a Vascular Access Management Program (VAMP) in their dialysis units.  We have received informal feedback via comments and formal feedback via our follow-up from the workshop participants that many were inspired by Dr. Nguyen’s humble and informal, yet passionate, discussion of his own experience.  Another concept that Dr. Nguyen stresses is the importance of the nephrologist working closely with his hemodialysis staff to create cannulation experts, or teaching the patient to cannulate themselves, as a key in maintaining and preserving a high rate of AV Fistulas.

 

Dr. Chris Griffith discussed the current processes of arterial-venous access surgery including the upper arm AVF transposition technique, Gracz procedure and conversion of AV grafts to AVFs.  He highlighted other solutions to challenges seen in his own patient population using case studies and photographs to illustrate his talk.  He also explained his use of Doppler Duplex Scanning in assessing vessels prior to surgery, sharing his own protocol and mapping diagram.

 

Carolyn Barclay, RN, CNN, Vascular Access Coordinator at Optimal Renal Care, LLC, provided information and tools to help Vascular Access Managers follow and educate patients about vascular access and the problems that arise in their care, both pre and post ESRD.

 

Steve Alford, a nurse educator from Medisystems, instructed the audience on successful cannulation techniques for working with new AV fistulas, emphasizing the buttonhole technique, which Dr. Nguyen strongly advocates for maintaining high AVF rates and introducing the new dull needle for single-site cannulation.

 

The meeting evaluations were reviewed after each workshop and comments and suggestions from the attendees, Network staff and the speakers themselves were incorporated into subsequent presentations.  The speakers were sent copies of the evaluations and the QI Manager worked with them to integrate minor changes in the curriculum from one session to the next. 

 

The Network absorbed all the meeting costs.  We did not charge a registration fee for this meeting and provided continuing education credits (both CMEs and CEUs) to the participants as an incentive to attend the meeting.  We also provided lunch prior to the half-day meeting and an offer to have “dinner with the speakers” to all attendees following the workshops to encourage continuation of the discussions in a less formal venue.

 

The “take-away” materials we provided at the meetings were designed to reinforce the key concepts inherent in effective planning for, and placement and maintenance of AVFs in hemodialysis facilities and training units.  Many of these tools and materials have also been posted on our Network website, which can be used as is or modified for individual practitioners’ use, and/or dissemination to our broader community. (See Materials, attachment B)

 

The enthusiasm that was generated by our programs at this meeting, demonstrated by the response of our attendees and our two main speakers, was so great and the benefit so clear that we expanded to other regional meetings to invite all of our Network facility-affiliated nephrologists and surgeons/interventional radiologists to gain from this information.  Our Board of Directors approved funding for four additional Back to the Basics meetings, three which took place in 2002, in Anchorage, Alaska; in co-sponsorship with Northwest Kidney Centers in Seattle, Washington and in Olympia, Washington.  Another meeting is planned for Lewistown, Montana in May 2003.  Vo Nguyen also made presentations at several ANNA meetings in our Network states and at meetings sponsored by Renal Care Group.

 

Quality Outcome Indicators and Results

 

Our project included two outcome measures:

 

We obtained our baseline prevalent AVF outcome data from the facility-specific 2001 National Surveillance of Dialysis-Associated Diseases (CDC 2001) survey, questions #6 (number of patients dialyzing in the unit in December 2000) and question #8 (number of prevalent AVFs in the patient population).  Historically, CPM surveys have been used to validate the accuracy of the CDC survey data.  This provided us with data that allowed us to rank our facilities and identify those with AVF rates <40% which became our intervention facilities, called “target population” in the following calculations.  We collected similar data from questions #2 and #6 from the CDC Survey 2002 and compared it to our baseline data to determine improvement using the following formulas:

 

1) Pre: Numerator:   Number of AVFs in the target population                    924

Denominator: Number of patients in the targetpopulation               2940                 31.4%

 

We removed one facility from the target/intervention group (10 patients) due to the unit closure.

 

Post: Numerator:   Number of AVFs in the target population                1196

Denominator: Number of patients in the target population               2992                 40%

 

During the course of this project, one facility closed. The numbers above reflect removal of this facility’s patients from both pre and post measures .

 

Our original goal was to achieve at least a 2.5 percentage point increase in the prevalent AVF rate among hemodialysis patients in our target population (hemodialysis patients receiving care at our intervention facilities in December 2002).  We recognized that we would only have six to eight months post intervention for change to be reflected and intended to continue to monitor AVF rates after submission of this report, at twelve months and eighteen months.  Data obtained from the 2002 CDC Survey reveals a statistically significant 8.6 percentage point increase in the prevalent AVF rate in our target population (p<0.001, chi-square). (See graph below and attachment C).   We are delighted to see this large a change this quickly. We suspect that the emphasis placed in our intervention programs on planning ahead to convert existing grafts to fistulas was a message heard by attendees and is reflected in this data.

 

2) Pre: Numerator:    Number of AVFs in the comparison population

Denominator:  Number of patients in the comparison population

 

Post: Numerator:    Number of AVFs in the comparison population

Denominator:  Number of patients in the comparison population

 

Our project used a pre/post with comparison design.  Our original plan was to draw baseline and re-measurement AVF rates for a similar group of facilities (with <40% AVF rates per 2001 CDC Survey) from three of our neighboring Networks (#15, 17 and 18), in order to measure changes in our target facilities relative to change in the other Networks’ (AVF <40%) facilities that did not receive interventions.  Several facilities that were included in Network #15’s AVF intervention project were eliminated.  As of writing this report, CDC data from the other Networks has been delayed due to late release and initiation of the CDC survey.  We plan to compile this data as soon as it is available and will report it in a follow-up document.

 

Our project included the following three Process Indicators 

 

1)       Do you have a vascular access manager (VAM) at your facility?

 

The data for the following indicators came from the VAM/VAMP Information Requests mailed to all of our Network facilities with the 2001 and 2002 CDC Surveys in January 2002 and 2003 respectively. Each facility responded “yes” or “no” to whether they had a staff member who acted as a vascular access manager, and defined the role of their VAM based on a list of tasks provided on the request. (See attachment F).  Based upon input from our Regional Office during the planning phase of this project, we established that a minimum set of three key activities would need to be included in the task set, for this individual to meet our criteria as truly functioning as an access manager. Those criteria included: “A” monitoring vascular access in the facility; “B” acting as the main contact in the unit for vascular access activities; and “C” reporting vascular access data at QI/QA meetings. Criteria “C” was the most difficult to achieve  In retrospect, we believe there were flaws in our information-gathering tool which could have produced unreliable information for this question. Therefore, we are reporting  both the number of facilities stating that they did have a VAM (regardless of that person’s role), and the number reporting a VAM whose role met  all of our minimum criteria, and just criteria A & B..  All measures are based upon the number of facilities responding to our pre and post intervention queries.

 

Number of Network HD facilities with VAM (“Yes”)Pre-meeting:      27/94 (29%)

Total number of Network HD facilities responding  Post meeting:    43/106 (41%)

                                    Change: ns (chi-square)

 

Number of intervention facilities with VAM (“Yes”)  Pre-meeting:      12/41(29%)

Total number of intervention units responding                    Post meeting:    21/42 (50%)

                                    Change: ns (chi-square)

 

Number of Network HD facilities with VAM (met criteria A,B&C)     Pre-meeting: 8/94  (8.5%)

Total number of Network HD facilities responding               Post meeting:13/106 (12%) 

                                    Change: ns (chi-square)

 

Number of intervention facilities with VAM (met criteria A, B &C)    Pre-meeting: 3/41 (7%)  

Total number of intervention units responding                                Post meeting:10/42 (24%)    

                                    Change: p<0.05 (chi-square)

 

Number of Network HD facilities with VAM (met criteria A & B)      Pre-meeting: 18/94 (19%)

Total number of Network HD facilities responding              Post meeting: 18/106 (17%)

                                     Change: ns (chi-square)

 

Number of intervention facilities with VAM (met criteria A & B)       Pre-meeting: 6/41 (15%)

Total number of intervention units responding                                Post meeting:13/42 (31%)

                                    Change: ns (chi-square)

Do you have a vascular access management program (VAMP) at your facility?

 

Number of Network HD facilities with VAMP                     Pre-meeting:      51/94 (54%)

Total number of Network HD facilities responding  Post meeting:    76/106 (71%)

                                    Change: p<0.02 (chi-square)

 

Number of intervention facilities with VAMP          Pre-meeting:      22/41 (54%)

Total number of intervention units             Post meeting:    32/42 (76%)

                                    Change: p<0.05 (chi-square)

 

2)       Attendance at the meetings

We acquired the next four data points from our invitee database and our meeting attendance rosters:

 

44 intervention units were represented at our intervention meetings  = 96%

46 intervention units were invited

 

Attendance by at least one representative from each intervention facility was our goal.  Staff and physicians at a number of our intervention facilities had overlapping responsibilities.  Thus, one attendee could be counted as representing several facilities.  Attendance at the workshops was tracked by specialty area and affiliation, so we were able to note whether any intervention unit had “no presence” at our workshops. 

 

36 nephrologists attended the four meetings                              = 37.5%

96 nephrologists were invited to the four meetings

 

16 VA surgeons attended the four meetings                                 = 17%

93 VA surgeons were invited to the four meetings

 

1 interventional radiologist attended one of the meetings               = 4%

25 interventional radiologists were invited to the four meetings

 

Our project included additional self-reported data:

 

 

1)  Pre meeting/post meeting query regarding beliefs about AVF:

At each session we distributed to and nephrologists and surgeons completed pre-meeting queries to the physician attendees as they registered and post-meeting queries to them at the end of the meeting.  We used this tool in an effort to determine whether physician’s AVF practice attitudes changed as a result of hearing our speaker discuss their experience and results.  The attendees returned them to us on a volunteer basis and we did not track names on these queries, so we were unable to compare each individual’s attitude change pre and post.  We were, however, able to evaluate the group’s general attitude change pre and post meeting.  One of the prominent attitude changes we noted is illustrated below in our first question: “Which patients do you consider poor AVF candidates?” (See Summary of Findings, appendix  D )

 

 

  Nephrologist

Pre-Meeting

(73% responded)

Nephrologist

Post-Meeting

 (58% responded)

Surgeon.
Pre-Meeting

(93% responded)

Surgeon.

Post-Meeting

(87% responded)

 

Attendees were asked to check all patient types they believed to be poor candidates  - pre and post meeting

 

Geriatric/Elderly

7

 

0

 

1

 

0

 

Cardiovascular. Disease

2

 

2

 

1

 

1

 

Prior Failed Access

5

 

0

 

1

 

1

 

Drug Abusers

9

 

2

 

8

 

2

 

Diabetic

9

 

2

 

1

 

0

 

Obese

5

 

1

 

5

 

2

 

Long term Steroid Use

4

 

0

 

3

 

1

 

Other Diseases

10

 

5

 

5

 

4

 

Patient Pref/Aesthetic

0

 

1

 

0

 

0

 

Short Life Expectancy

6

 

4

 

5

 

4

 

On Transplant list

3

 

3

 

1

 

2

 

 

2)        Post meeting follow-up with physicians was conducted by phone, mail and fax)

 

Outreach was made to the 53 physicians who attended the meetings with multiple attempts to retrieve the information from non-responders.  35 of the 53 did respond (66% response rate).  Of these, 32 (91%) reported having made changes in their practice.  30 (86%) attributed their practice changes to what they learned at the meeting. Some of the most frequent practice changes reported included:  84% are now using vein mapping per Doppler Duplex scanning, 81% reported creating more upper arm fistulas and 66% reported more AVFs as primary access placed in new patients.  88% of the responding physicians reported holding follow-up meetings with staff, administration, surgeons and/or partners regarding what was discussed at the meeting when they returned to their community.  (See Summary, appendix E ). 

 

3)       Post meeting follow-up with VAMs regarding the VAMP

 

In December, 2002, we contacted the VAMs and other nurses associated with intervention facilities who attended our meetings to thank them for participating and to remind them of  resources available to them for use in their AVF programs via our website, as well as assistance from Network staff.  Our letter mentioned that we would be collecting post intervention outcome data through the CDC survey at the end of the year.  We also asked them about key changes at their facility level which were inititiated after attending the intervention meeting via a fax-back query sheet. Responses were considered to be anecdotal data. Sixty queries were sent, and two outreach attempts were made; a total of 28 responses (47%) were received.  

 

Self-reported data indicated that changes made included: 9 respondents’ facilities had appointed a vascular access manager; 2 reported modifying the role of their VAM, and 11 facilities without a VAM  planned to hire or appoint one in 2003.  Six respondents reported adding the buttonhole technique to their cannulation practice, and three reported revising their cannulation practice.  Twenty-five percent of respondents (7/28) reported upgrading their vascular access QI/QA process after attending the intervention program.

 

Regarding a Vascular Access Management Program (VAMP); 9 of the 28 respondents (32%)  had established a VAMP, 6 of the 13 facilities that already had a VAMP prior to the intervention had modified their program (46%),  and 7 developed an algorithm for their program.

                                   

                                   

 

 

 

As reported on page 7, of the 45 intervention facilities remaining in the project on December 2002, 42 responded to our CDC Survey companion query regarding the presence of a vascular access manager on-staff. Although 50% (21) reported that they had a VAM , only 24% (10) had VAMs whose activities met our criteria A, B & C.  However, Network-wide, far fewer facilities (12%) had VAMs meeting these criteria (December 2002 self-reported data for all Network facilities).  The toughest criteria to meet was “C”: reporting vascular access data at regular QI/QA meetings. If we remove that criteria,  the post intervention program data still reflects that proportionally, twice as many intervention facilities (31%) had VAMs who monitored accesses (criteria A) and acted as the main contact in the unit for VA activities (B) than the proportion for the Network as a whole (15%).

 

 

4)       Evaluations completed by physicians at the conclusion of each workshop included the following comments:

 

Regarding the program in general:

 

“The program was very useful- (I have been practicing nephrology for 25 years). If I had any way to know the content sooner I would have brought my entire staff-surgeons included.  I wish it had been videotaped so I could take it home.  I came to the meeting skeptical, I leave thankful I came”

“The handouts will be very useful.”

“Great program!  Speakers were knowledgeable and passionate about the subject.  It should be offered to ALL nephrologist and vascular surgeons in the state…”

“This was excellent information for us to take back to our units.”

“An excellent meeting.”

“At first I was reluctant…I was pleasantly surprised-this was an excellent meeting.”

 

Regarding Our Physician Presenters:   “Excellent presentation, informative and thought provoking”

“Excellent talk”

“Delightful speaker-knowledge and humor.  Sounds dedicated-what a concept!”

“This was great, I did learn a tremendous amount”

 “Very Useful!”       “Very informative”

“Excellent heartfelt presentation, thanks”

“Commendable that nephrologist and surgeon work so closely together”

 

Conclusions

 

The increase in the prevalent AVF rate in our target population from 31.4% (99.9% confidence limits 28.6 to 34.2%) to 40.00 (99.9% confidence limits 37.0 to 42.9%) is statistically significant at p <0.001.  Chi-square confirms this level of significance.

 

Project Limitations and Findings

 

Given the time frame of this project, we expected that it would be difficult to measure a significant increase in prevalent AVF rates, at the first measurement point, which would be between 6 months and 8 months post intervention. The dramatic increase in prevalent AVF rates validated our impression that the programs had made an impact on attendees, as anecdotally reported during our follow-up. We  intend to continue to track AVF rates in our Network’s facilities for at least the next two years, via the CDC Survey  (annual December data) and our own simple survey tool, each June, to track  trends.  We will continue to update our website and inform our facilities as new information is obtained and reports of our on-going findings are completed.

 

Barriers Encountered

 

Since we were focusing our educational efforts on physicians, and did not have direct access to the surgeons/interventional radiologists and nephrologists in our Network’s database, we had to “work backwards” from our facilities, to identify appropriate attendees.  It is likely we missed some individuals who would have benefited from the program content, and used this information  to increase AVFs in their patient population.  However, if colleagues attended,  we believe their enthusiasm for the messages presented, would have been shared locally. 

 

The delay in initiation of this year’s CDC Survey demonstrates that there may be obstacles when depending upon information from external entities to measure (quantify) the impact of interventions.  These factors are beyond our control. In the case of this project, it has delayed our ability to compare outcomes within our Network area, to the change in AVF rates at comparable facilities in contiguous Networks. 

 

Lessons Learned:

 

Physicians respond positively to the opportunity to participate in educational sessions targeted to them.  We witnessed a great deal of sharing among the physicians at our meetings and we believe that informal venues similar to our workshops, led by physicians who have put a lot of personal effort into producing a successful replicable program, are effective, ”real” and appreciated. 

 

Our year-end 2002 data confirms our hypothesis that physicians are the drivers for decision making for selection, creation and replacement of access.

 

Each Network has “stars” in their own community to look to for information and resources on programs that excel, to share with their peers, to help overcome barriers to best practice.  There may be an advantage in using local practitioners, “insiders” with hands on experience to promote best practices, as this may decrease resistance to a message delivered by academics or “outsiders”.

 

Based on program evaluations from each intervention, our project leader worked with the presenters to fine-tune and coach improvement for the following session(s).  This does require a significant investment of time and sensitive coaching skills.  These interventions were costly and entirely underwritten by our Network.  However, we found in one of our subsequent general Back to the Basics sessions that charging a nominal fee to help cover the costs of continuing education credits and food did not appear to deter people from signing up and attending. 

 

Demonstrating “pay-off” is a strong motivator.

 

Implications of the Project

 

There are clear benefits to providing a comfortable, collegial and ”safe” format to provide education and information sharing with physician groups. 

 

The “ripple effect” does occur. After attending our programs, physicians went back and shared information with their peers and staff regarding what they learned. Some Medical Directors and facility staff reported using physician-specific data (patients followed by type of access) as a motivator to increase use of AV fistulas. We expect to see our prevalent AVF rate continue to increase over the next two years as this information is exchanged among Network physicians. 

 

Recommendations

 

We would highly recommend this approach to quality improvement – it is well received, achieves better than anticipated results, and provides positive reinforcement to Network quality improvement team members as well as program participants.

 

Networks with limited financial resources could  constrain budget expenditures by eliminating some of the peripheral “lures”, such as dinners, which we did not find to be key motivators in securing attendance.

 

If multiple venues/programs are offered, continued assessment of each program’s impact (via an evaluation tool) and coaching of presenters is critical to successful transmission of the desired messages.

 

Providing  continued medical education (CME) and other credit (CEUs) for attendees is an important “perk”.  While our Network underwrote this expense for our intervention programs, we did not observe attrition in attendance at a subsequent program offered to the general public, where physicians did pay for their CMEs.  Thus, the “who pays” question may be open .

 

Plan for drop-ins, as well as program registrants.

 

If evaluations indicate a weakness in one of your presenters which cannot be successfully addressed with coaching, seek an alternative speaker.

 

For “geographically challenged” Networks, attendance is enhanced by scheduling repeat programs at venues accessible to practitioners serving the target population.


Attachment A – References

 

Allon, M., Lockhart, M. et al (2001). Effect of preoperative sonographic mapping on vascular access outcomes in hemodialysis patients. Kidney International, 60 (5), 2013-20.

 

Schribner, B.(1984). The Overriding Importance of Vascular Access.  Dialysis & Transplantation, Vol. 13; No. 10, 625.

 

Beathard, G., (1998). Endovascular management of thrombosed dialysis access grafts.  American Journal of Kidney Disease, 32, 172-5.

 

Bender, M., (1995).  The Gracz arteriovenous fistula evaluated- results of the brachiocephalic elbow fistula.  European Journal of Endovascular Surgery, 10: 294-7.

 

Bender, M., Bruyninckx, C. et al. (1994). The brachiociphalic elbow fistula: A useful alternative angioaccess for permanent hemodialysis. Journal of Vascular Surgery, Nov, Vol 20, No. 5, 808-13.

 

Bleyer, A.J., Disney, A.P., Hylander, B., Nomoto, Y., Coates, P.T.H., delaTorre, E., Bjorklund, A., & Burkhart, J.M. (1995). The multinational study of dialysis therapy: Hemodialysis access. American Journal of Kidney Disease, 26, 483A (abstr).

 

Canadian Institute for Health Information (2000). Canadian Organ Replacement Registry Report. Canada: Canadian Institute for Health Information.

 

CARI Guidelines (2001). Retrieved from

http://www.cari.kidney.org.au/index.htm

 

Churchill, D.N., Taylor, D.W., Cook, R.J., Laplante, P., Barre, P., Cartier, P., Fay, W.P., Goldstein, M.B., Jindal, K., Mandin, H., McKenzie, J.K., Miurhead, N., Parfrey, P.S., & Posen, G.A. (1992). Canadian hemodialysis morbidity study. American Journal of Kidney Disease, 19, 214-234.

 

Dixon, B., Novak, L. et al (2002). Hemodialysis vascular access survival: Upper-arm native arteriovenous fistula.  American Journal of Kidney Disease, January, Vol 39, No.1.

 

Duda, R., Spergel, L.M., Holland, J., Tucker, C.T., Bander, S., & Bosch, J.P. (April 2000a). How a multidisciplinary vascular access care program enables implementation of the DOQI Guidelines, Part I.” Nephrology News & Issues, 13-16.

 

Duda, R., Spergel, L.M., Holland, J., Tucker, C.T., Bander, S., & Bosch, J.P. (May 2000b). Implementing a vascular access quality improvement program, Part II.” Nephrology New & Issues, 29-37.

 

Eggers, P., & Milam, R. (2001). Trends in vascular access procedures and expenditures in Medicare’s ESRD program. In M.L. Henry, Vascular Access for Hemodialysis-VII (pp. 133-143). W. L. Gore & Associates.

 

Feldman, H., Held, P.J., & Hutchinson, J.T., et al (1993). Hemodialysis vascular access morbidity in the United States. Kidney International, 43, 1091-1096. 

 

Gibson, K.D., et al. (2001). Assessment of a policy to reduce placement of prosthetic hemodialysis access. Kidney International, 59, 2335-2345.

 

Hakaim, A. (1998).  Superior maturation and patency of primary brachiociphalic and transposed basilic vein AVF.  Journal of Vascular Surgery; 27:154-7.

 

Health Care Financing Administration (2000). 2000 annual report, End stage renal disease clinical performance measures project. Baltimore, MD: National Institutes of Health.

 

Kaufman, J., Homan, R.,(1997). A cost analysis of prospective monitoring and prophylactic repair of hemodialysis access stenosis.  Journal ASN 8, 162A.

 

Konner, K. (2001).  Increasing the proportion of diabetics with AV fistulas. Seminars in Dialysis. Vol 14, No 1 (Jan/Feb), 1-4.

 

Leapman, S.B., et al. (August 1996). The arteriovenous fistula for hemodialysis access: Gold standard or archaic relic? American Surgeon, 62 (8), 652-6

 

Marlvrh, M. (1998). Duplex exam for access creation.  Blood Purification, 19, Third Basic Multidisciplinary Access Course, Maastricht.

 

Malovrh, M.(1998). Non-invasive evaluation of vessels by duplex sonography prior to construction of arteriovenous fistulas for haemodialysis. Nephrology Dialysis Transplantation, 13:125-9.

 

Marston, W. (1998). Surgical management of thrombosed dialysis access grafts.  American Journal of Kidney Disease, 32, 168-17.

 

Nassar, G.M., & Ayus, J.C. (2001). Infectious complications of the hemodialysis access. Kidney International, 60, 1-13.

 

National Kidney Foundation (1997). Dialysis Outcomes Quality Initiative: Clinical Practice Guidelines for Vascular Access. New York: National Kidney Foundation.

 

National Kidney Foundation (January 2001). NKF - K/DOQI clinical practice guidelines for hemodialysis adequacy: Update 2000. American Journal of Kidney Diseases, 37, 1, Suppl 1.

 

Nguyen, V.D., Griffith, C., & Robinson, K.D. (2001). Graft-free hemodialysis (HD) practice is achievable despite high patient co-morbid factors in a community based dialysis program.  Abstract presented at the 2001 ASN/ISN World Congress of Nephrology.

 

Nguyen, V.D., & Griffith C (2000).  Successful conversion of dialysis grafts into secondary AV fistula.  A three years experience at Providence St. Peter Hospital Dialysis Program.  Abstract presented at the 2000 ASN Annual Meeting in Toronto.

 

Reddan, D., Klassen, P. et al. (2002). National profile of practice patterns for hemodialysis vascular access in the United States. Journal of the American Society of Nephrology, 13:2117-2124.

 

Rivers,S. et al, (1993). Basilic vein transposition. Journal of Vascular Surgery, 18:391-7.

 

Robbin, M.L., Gallichio, M.H., et al (2000).  US Vascular Mapping before Hemodialysis Access Placement. Radiology, 217, 83-88.

 

Rodriguez, J.A.,(2000). The function of permanent vascular access. Nephrology Dialysis and Transplantation, 15, 402-8.

 

Rodriguez, J.A., Lopez, J., Montse Cleries, Vela, E., & Renal Registry Committee (1999). Vascular access for hemodialysis - an epidemiological study of the Catalan Renal Registry. Nephrology Dialysis and Transplantation, 14, 1651-1657.

 

Roper, L.D., Maynard, M.M., et al (2002).  Refinements in Hemodialysis Access Construction Using a New Protocol for Preoperative Noninvasive Evaluation of the Upper Extremity. The Journal of Vascular Technology, 26(2):83-87.

 

Salles-Cunha, S.(1986). Preoperative noninvasive assessment of arm veins. Journal of Vascular Surgery; 3:813-6.

 

Sands, J., & Miranda C.L. (1997). Increasing numbers of AV fistulas for hemodialysis access. Clinical Nephrology, 48, 2, 114-17.

 

Sands, J.(2000). Increasing AV fistulas: Revisiting a time-tested solution. Seminars in Dialysis. Vol 13, No 6 (Nov/Dec), 351-353.

 

Sherman, R., Besarab,S. et al.(1997). Recognition of the failing vascular access:a current perspective. Seminars in Dialysis, Vo. 10, No.1(Jan-Feb), 1-4.

 

Sidawy, A., Gray, R. et al.(2001). Recommended standards for reports dealing with arteriovenous hemodialysis accesses. Journal of Vascular Surgery, Vol. 35, No. 3.

 

Sparks, S. (1997). Superior patency of perforating antecubital vein arteriovenous fistulae for hemodialysis.  Annuals of Vascular Surgery,  11: 165-7.`

 

Spergel, L.M. (May 1998). DOQI guidelines and the vascular access puzzle:  finding the pieces that fit. Nephrology News & Issues, 46-48.

 

Stevenson, K.B., Hannah, E.L., Lowder, C.A., Adcox, M.J., Davidson, R.L., Mallea, M.C., Narasimhan, N., and Wagnild, J.P. (In Press). Epidemiology of hemodialysis vascular access infections from longitudinal infection surveillance data: Predicting the impact of NKF-DOQI clinical practice guidelines for vascular access. American Journal of Kidney Diseases.


Attachment B    “Back to the Basics: Increasing the Use of AV Fistulas” Materials:

 

Materials on the website

 

·         Letter to Referring Physicians (Vo Nguyen, MD)

·         “A Graft-free Hemodialysis Practice is Possible in a Community-Based Dialysis Unit Despite High Patient Co-morbidities” (Vo Nguyen, MD, Chris Griffith, MD)

·         Protocol for Cephalic and Basilic Vein Mapping (Olympic Vascular Lab)

·         Role Description of Vascular Access Manager/Dialysis Access Coordinator (NWRN)

·         Patient Venous Pressure Monitoring Log

·         “Constant-Site Cannulation Technique for Native AV Fistulae” (Medisystems)

·         Physical Examination of the Dialysis Vascular Access by Gerald A. Beathard, MD, PhD

·         Quality Initiative Summary

- Graph of % of AVF Use in Hemodialysis Facilities in the Northwest Renal Network

- Coded List of NWRN (Northwest Renal Network) Facility-Specific Access Rates

-          CPM Data

·         References (CMS AVF template plus Vo Nguyen’s recommended references)

·         List of Interventions available (CMS AVF template)

·         NKF K/DOQI Vascular Access Clinical Practice Guidelines-2000 Update Summary

·         Algorithms (NWRN)

-Permanent vascular access

-Temporary access surveillance

·         Root Cause Analysis

·          “Understanding Your Hemodialysis Access Options” (AAKP)

·         “What’s Your ACCESS-ability?” (NWRN)

·         Copies of slides from Power Point presentations by Leslie Dinwiddie, MSN, RN, FNP, CNN

-“Best Access Procedures from the Dialysis Units’ Viewpoint”

-“Fistulas for Dialysis Access: The Challenge of Preservation, Creation, Maturation and Cannulation”

·         Resources for Vascular Access Education (Patient and staff)

 

Attachment C


Attachment D