Barriers and facilitators to vascular access point-of-care ultrasound in haemodialysis: An international survey of haemodialysis clinicians.

BACKGROUND: Utilising point-of-care ultrasound for assessment and cannulation of vascular access in people receiving haemodialysis has shown positive clinical results. Nonetheless, there is variation in how renal health care professionals worldwide embrace this method, and there's a lack of research on the factors that promote or hinder its adoption. OBJECTIVES: To explore regional differences, and barriers and facilitators, to the use of point-of-care ultrasound for assessment and cannulation of vascular access in haemodialysis. DESIGN: Exploratory descriptive cross-sectional web-based survey. PARTICIPANTS: Healthcare clinicians working in haemodialysis responsible for cannulation of arteriovenous fistula or grafts. RESULTS: The survey was completed by 645 health care clinicians from 38 countries. 75% to 93% of respondents from Australia/New Zealand, Canada, Europe and United Kingdom/Ireland reported access to ultrasound, compared to 26% (n = 43/167) from the United States respondent's reported lower levels of ultrasound training than other regions. Facilitators for using ultrasound were: the availability of ultrasound training (87%, n = 558), to reduce miscannulations (76%, n = 255/336) and to improve patient outcomes (73%, n = 246/336). Point-of-care ultrasound barriers were lack of access to ultrasound education (82%, n = 196/239), lack of ultrasound machines (33%, n = 212/645) or believing that ultrasound was someone else's role (38%, n = 29/86). CONCLUSIONS: This study revealed national and regional differences related to haemodialysis point-of-care ultrasound. Understanding the regions requiring more education and implementation of ultrasound and what motivates staff, or deters from using ultrasound, is crucial for effectiveness of future implementation and workplace change initiatives.

Nurses' perceptions of point-of-care ultrasound for haemodialysis access assessment and guided cannulation: A qualitative study.

AIM: To explore nurses' perceptions of using point-of-care ultrasound for assessment and guided cannulation in the haemodialysis setting. BACKGROUND: Cannulation of arteriovenous fistulae is necessary to perform haemodialysis. Damage to the arteriovenous fistula is a frequent complication, resulting in poor patient outcomes and increased healthcare costs. Point-of-care ultrasound-guided cannulation can reduce the risk of such damage and mitigate further vessel deterioration. Understanding nurses' perceptions of using this adjunct tool will inform its future implementation into haemodialysis practice. DESIGN: Descriptive qualitative study. METHODS: Registered nurses were recruited from one 16-chair regional Australian haemodialysis clinic. Eligible nurses were drawn from a larger study investigating the feasibility of implementing point-of-care ultrasound in haemodialysis. Participants attended a semistructured one-on-one interview where they were asked about their experiences with, and perceptions of, point-of-care ultrasound use in haemodialysis cannulation. Audio-recorded data were transcribed and inductively analysed. FINDINGS: Seven of nine nurses who completed the larger study participated in a semistructured interview. All participants were female with a median age of 54 years (and had postgraduate renal qualifications. Themes identified were as follows: (1) barriers to use of ultrasound; (2) deficit and benefit recognition; (3) cognitive and psychomotor development; and (4) practice makes perfect. Information identified within these themes were that nurses perceived that their experience with point-of-care ultrasound was beneficial but recommended against its use for every cannulation. The more practice nurses had with point-of-care ultrasound, the more their confidence, dexterity and time management improved. CONCLUSIONS: Nurses perceived that using point-of-care ultrasound was a positive adjunct to their cannulation practice and provided beneficial outcomes for patients. IMPLICATIONS FOR THE PROFESSION AND/OR PATIENT CARE: Haemodialysis clinics seeking to implement point-of-care ultrasound to help improve cannulation outcomes may draw on these findings when embarking on this practice change. REPORTING METHOD: This study is reported according to the Consolidated Criteria for Reporting Qualitative Research (COREQ). PATIENT OR PUBLIC CONTRIBUTION: Patients were not directly involved in this part of the study; however, they were involved in the implementation study. TRIAL AND PROTOCOL REGISTRATION: The larger study was registered with Australian New Zealand Clinical Trials Registry: ACTRN12617001569392 (21/11/2017) https://anzctr.org.au/Trial/Registration/TrialReview.aspx?id=373963&isReview=true.

Point-of-care ultrasound-guided cannulation versus standard cannulation in hemodialysis vascular access: A controlled random order crossover pilot feasibility study.

BACKGROUND: Standard cannulation practice for hemodialysis consists of inserting needles "blindly" through skin into an arteriovenous fistula (AVF), which is more likely to cause damage. Point-of-care ultrasound (POCUS) guided cannulation has potential for less damage; however, efficacy of this technique has not been explored. Our purpose was to test the feasibility and effectiveness of POCUS guidance for cannulation of AVFs in hemodialysis patients. METHODS: A random-order crossover research design was used; patients and nurses acted as their own control. Sample included 13 patients with functioning AVFs and 9 nurses, recruited from a single hemodialysis center. All nurses cannulated all patients using standard and POCUS-guided cannulation. Data were collected at each cannulation (time taken, nurse position, probe direction, pressures, patient satisfaction, pain scores). Ultrasound images of needle position were collected from which needle tip locations inside vessels were measured. Nurses were surveyed at three timepoints and were interviewed at conclusion of data collection. Analysis involved linear mixed-models for clinical data, descriptive statistics for binary and feasibility data, and content analysis for interview data. RESULTS: Eleven patients and seven nurses completed. Protocol adherence was 94.4%. Two miscannulations occurred, both during standard cannulation. Cannulation time using POCUS guidance was significantly higher than standard cannulation (p = 0.008, 95% CI 39-166). All other variables showed no statistically significant difference. Content analysis of interview data showed cultural shift toward use of POCUS; nurses gained confidence and become more proficient in their POCUS technique. CONCLUSIONS: Random-order crossover is a feasible design to measure differences in POCUS-guided and standard cannulation. It is also feasible to implement POCUS into hemodialysis centers and whilst POCUS guidance takes longer, nurses become more proficient, and confident with persistent use.

The use of haemodialysis plastic cannula in prevalent patients with kidney failure: A feasibility crossover randomised trial study.

BACKGROUND: Haemodialysis plastic cannulae have been limited to incident arterio-venous fistulae cannulation or in those who require a more flexible in situ access device. The feasibility of plastic cannulae in prevalent patients on haemodialysis has not been reported. OBJECTIVE: To determine the feasibility of plastic cannulae in prevalent haemodialysis patients. DESIGN: Prospective feasibility crossover randomised control trial. PARTICIPANTS: Adults diagnosed with chronic kidney disease G5 requiring haemodialysis three or more times per week via a native arteriovenous fistula previously cannulated for at least 6 weeks. MEASUREMENTS: Cannulation success rate, cannulation manipulation type, arterial and venous needle pressure. Patient needle-related anxiety as measured by the 4-item Patient Health Questionnaire and Meditation in Dialysis Questionnaire and nurse satisfaction. RESULTS: Eight patients completed 12 weeks plastic canulae and metal needles. Plastic cannulae were less likely to be successful in cannulation compared to metal needles (odds ratio = 0.15; 95% confidence interval [CI]: 0.05-0.48; p = 0.001). There was no effect of type of needle on the change in arterial needle pressure or change in venous needle pressure and no effect of plastic needle on repositioning (relative risk [RR] = 1.09; 95% CI: 0.385, 3.089; p = .871) or gauze pillow application (RR = 0.936; 95% CI: 0.467, 1.874; p = .851) than metal needles, relative to no manipulation. There were low rates of psychological distress or needle-related anxiety towards plastic or metal needles. CONCLUSIONS: Plastic cannulae are feasible in prevalent haemodialysis patients, however, metal needles are still preferred in a haemodialysis center that has historically used metal needles.

Point-of-care ultrasound use for vascular access assessment and cannulation in hemodialysis: A scoping review.

Point-of-care ultrasound (POCUS) for access assessment and guided cannulation has become more common in hemodialysis units. The aims of this scoping review were to determine: circumstances in which renal nurses and technicians use POCUS; the barriers and facilitators; and evidence of the effects of POCUS in guiding assessment and cannulation. A search was conducted of CINAHL, Medline, Cochrane Database of Systematic Reviews, Cochrane Central Register of Controlled Trials, and ProQuest, Trove and Google Scholar as grey literature sources. Of 1904 publications, 21 studies met inclusion criteria (11 full text and 10 abstracts). These included primary research publications (n = 5), clinical observational cohort studies (n = 5), case studies (n = 3), published guidelines (n = 2), and published position papers (n = 6). POCUS was used for: assessing arteriovenous fistula (AVF) maturation; identifying landmarks and abnormalities; assessing alternate cannulation sites; performing new AVF cannulation; performing difficult cannulation; increasing cannulation accuracy; performing cannulation through stents; and patient self-cannulation training. There were scant data on the barriers to, and facilitators of the use of POCUS, and a distinct lack of empirical evidence to support its use. These knowledge gaps highlight the need for further clinical studies, particularly randomized clinical trials, to test the effectiveness of POCUS in hemodialysis for assessment and guided cannulation.

Point-of-care ultrasound-guided cannulation versus standard cannulation in haemodialysis vascular access: protocol for a controlled random order crossover pilot and feasibility study.

BACKGROUND: Point-of-care ultrasound (POCUS) has been used in various vascular access contexts; however, to date, it has not been widely adopted in haemodialysis clinics. People with end-stage kidney disease receiving haemodialysis require an arteriovenous fistula (AVF), arteriovenous graft (AVG), or central venous access device (CVAD) in order to access their blood for therapy/treatment. Cannulation issues, such as haematoma and extravasation, related to AVFs and AVGs are common. This pilot and feasibility study will assess the feasibility of a randomised controlled trial aimed at evaluating whether POCUS-guided cannulation results in more successful and accurate AVF needle placement than the standard practice of blind cannulation. METHODS: A controlled, random order crossover design will be used to evaluate two clinical conditions: (1) POCUS-guided cannulation and (2) standard practice of blind cannulation, when used by haemodialysis nurses. The feasibility of conducting this type of trial for these two clinical conditions will be assessed through recruitment, retention, and attrition rates; perceptions of acceptability; implementation measures; and assessment of methods of data collection. Clinical outcomes to be assessed are overall cannulation success on first attempt, accuracy of needle tip placement, number of extravasations, procedural time, and patient and nurse perceptions. The setting is a 16-chair dialysis unit in regional Australia. Participants will include adult haemodialysis patients with an AVF in situ for greater than 2 months and haemodialysis-trained registered nurses working full- or part-time. Clinical outcomes will be analysed using generalised linear mixed models. Feasibility data will be reported using descriptive statistics. Qualitative audio data will be digitally recorded, transcribed verbatim, and analysed using thematic analysis. DISCUSSION: Point-of-care ultrasound for cannulation has the potential to promote high-quality, safe nursing care and decrease cannulation damage for patients on haemodialysis. Due to the lack of evidence for patient benefit and its innovative and niche use in haemodialysis centres, POCUS is currently only specified in one international guideline. This study will inform sample size calculations for a future multi-site trial. TRIAL REGISTRATION: Australian New Zealand Clinical Trials Registry, (21/11/2017) ACTRN12617001569392.

Plastic cannula use in hemodialysis access.

INTRODUCTION: Successful cannulation of arteriovenous fistula (AVF) or arteriovenous graft (AVG) is an important concept in hemodialysis. Metal needles have been used for cannulation in dialysis for over 50 years. Plastic cannula for dialysis is currently being introduced into Australia. AIMS: To identify if the implementation of plastic cannula could decrease the amount of miscannulations and adverse events in AVFs at first cannulation. METHODS: Train all staff in the Barwon Health renal department in the new technique of plastic cannula insertion and implement a new protocol for cannulation of AVFs in the first two weeks of dialysis. RESULTS: The training process took 12 months longer than anticipated due to issues with 'expert' to 'novice' reservations from staff, but initial results are positive with the statewide key performance indicator of new patients using AVF at first dialysis rising from 50% in 2013 to 78% in 2015. Staff were significantly more successful cannulating with plastic cannula in patients who had AVF only (67% success) than those who had a CVC alternative (24% success). CONCLUSIONS: Plastic cannulas offer a new and innovative way to cannulate AVFs and with time, expertise and training can be utilized to provide a successful cannulation program for patients starting hemodialysis with AVFs.

Increasing home dialysis knowledge through a web-based e-learning program.

AIM: There has been a global decline in the uptake of home-based dialysis therapies in the past 20 years. The ability to provide appropriate information to potential patients in this area may be confounded by a lack of knowledge of home dialysis options. The aim of this study was to develop a web-based education package for health professionals to increase knowledge and positive perceptions of home-based dialysis options. METHODS: A three-module e-learning package concerning home dialysis was developed under the auspices of the home dialysis first project. These modules were tested on 88 undergraduate health professionals. Changes in attitudes and knowledge of home dialysis were measured using custom designed surveys administered electronically to students who completed the modules. Matched pre and post responses to the survey items were compared using Wilcoxon signed rank tests. RESULTS: The pre survey indicated clear deficits in existing knowledge of home dialysis options. In particular, when asked if haemodialysis could be performed at home, 22% of participants responded 'definitely no' and a further 24% responded 'probably no'. Upon completion of the e-learning, post survey responses indicated statistically significant improvements (P < 0.001) in eight of the nine items. When asked if the e-learning had increased their knowledge about home dialysis, 99% of participants responded 'definitely yes'. CONCLUSION: A suite of web-based education modules can successfully deliver significant improvements in awareness and knowledge around home dialysis therapies.

Proof of concept: Developing a peer reviewed, evidence-based, interactive e-learning programme.

Knowledge and skill acquisition related to vascular access are traditionally individual institutional educational initiatives. Australia currently has no national evidence based education programme for renal nurses. A survey of Australian and New Zealand Nephrology Educators' conducted in 2009, identified the need for more effective and consistent delivery of clinical education for nurses using innovative, web-based approaches supporting the tenets of e-learning methodologies. This paper discusses the development, implementation and proposed evaluation of a peer reviewed Australasian e-learning programme on buttonhole cannulation. It will further highlight the benefits of inter-organisational partnerships and how these partnerships can facilitate positive change in teaching and learning practices. This project has unique characteristics that collectively provide value, distinction and innovation to nurses, patients and renal departments. As the e-learning programme was founded on a platform of evidence-based practice it is therefore easily transferable to an international context.