Use of a Paclitaxel Drug-Eluting Stent for the Treatment of Hemodialysis Access Outflow Stenosis.

PURPOSE: To evaluate the outcomes and durability of drug-eluting stents (DESs) for the treatment of hemodialysis access outflow stenosis. MATERIAL AND METHODS: A single-center retrospective analysis was conducted of all patients with hemodialysis vascular access outflow stenosis treated with a paclitaxel-coated DES (Eluvia; Boston Scientific, Marlborough, Massachusetts) between January 2020 and July 2022. A total of 34 DESs were implanted to treat outflow stenosis in 32 patients. Primary target lesion patency after stent deployment was the main outcome. Comparison between the time interval free from target lesion reintervention (TLR) after previous plain balloon angioplasty (PBA) and that after stent deployment for the same target lesion was considered a secondary outcome. RESULTS: The primary patency at 6, 12, and 18 months was 63.1%, 47.6%, and 41.7%, respectively. The secondary patency rate was 100% at 18 months. The median time interval free from TLR increased from 4.1 to 11.9 months (P < .001). No adverse events were observed during the median follow-up period of 387 days. CONCLUSIONS: The patency rates after use of DES for hemodialysis access outflow stenosis were comparable with results for drug-coated balloons and stent grafts, addressing recoil and minimizing the risk of jailing by a covered stent.

Hemodialysis vascular access coordinator: Three-level model for access management.

Management of vascular access is a challenge for the dialysis team, particularly to keep the arteriovenous access working. The vascular access coordinator can positively contribute to increase the number of arteriovenous fistulas and reduce central venous catheters. In this article, we introduce a new approach to vascular access management centered on (the results of setting up) the role of vascular access coordinator. We described the three-level model (3Level_M) for vascular access management organized in three levels: vascular access nurse manager, vascular access coordinator, and vascular access consultant. We defined the instrumental skills and training required to be developed by each element and clarify the articulation between the model and all members of the dialysis team related to vascular access.

Outflow Rescue of Elbow-Blockade Forearm Arteriovenous Fistulas: Outcomes of Open Surgical Techniques.

BACKGROUND: Venous scarring at the elbow is a common problem that can cause early and late forearm arteriovenous fistula (AVF) dysfunction in hemodialysis patients. However, any effort to prolong the long-term patency of distal vascular accesses could benefit the patient's survival, maximizing the use of restricted venous patrimony. This study aims to report a single-center experience in the recovery of distal autologous AVF with venous outflow obstruction at the elbow using different surgical techniques. METHODS: Retrospective observational study of all patients treated at a single vascular access center from January 2011 to March 2022, with dysfunctional forearm AVFs presenting with outflow stenosis or occlusions at the elbow treated by open surgery, using 3 different surgical techniques. Demographics and clinically relevant data were collected. Evaluated endpoints included primary, assisted primary, and secondary patency rates at 1 and 2 years. RESULTS: Twenty-three patients with elbow-blocked outflow forearm AVFs have been treated with a mean age of 64 ± 15 years. The majority (96%) had a radiocephalic fistula. The median time from vascular access creation to intervention was 34.5 months (12-216 months). A total of 24 procedures have been performed using 3 different surgical techniques for bypassing the obstructed venous outflow at the elbow. Technical success was achieved in 96% of the surgically treated patients. Primary and secondary patency rates at 1 year were 67.4% and 89.4%, respectively, and 52.9% and 82.0% at 2 years, with a median follow-up of 19 months (6-92 months). CONCLUSIONS: AVFs outflow stenosis or occlusions at the elbow not amenable to endovascular therapy could lead to vascular access abandonment. Our study demonstrates multiple surgical solutions to avoid this adverse outcome. Elbow venous outflow surgical reconstruction seems effective for distal vascular access preservation. Close surveillance is essential for timely endovascular treatment of newly developed stenosis at the venous drainage.

Effects of Long-term Administration of Inhaled Lavender During Hemodialysis on Patients' Invasive Pain, Anxiety, and Comfort During Cannulation: A Single-blind Randomized Controlled Trial.

Context: Although a number of studies have shown that lavender administered via inhalation can decrease the invasive pain and anxiety experienced by hemodialysis (HD) patients during cannulation, the evaluation has mostly been on the short-term effectiveness of lavender oil. Also, no study has evaluated the effects of lavender on comfort level. Objective: The study aimed to investigate the long-term effectiveness of lavender oil, when administered via an inhaler during HD sessions, on a patient's experience of invasive pain, anxiety, and comfort during access to the fistula. Design: The research team designed a prospective, single-blind, randomized, controlled clinical trial. Setting: The study took place in an HD unit of a public hospital in Kirklareli, Turkey. Participants: Participants were 24 patients receiving HD in the unit between January and March 2021. Intervention: Participants were randomly assigned to the intervention or control group. Pure lavender essence was diluted with sweet almond oil at a ratio of 1:10. Before the cannulation procedure at 12 HD sessions, three drops of a 1:10 mixture were placed on sterile gauze and held at a distance of about 10 cm from the participant's nose to ensure its inhalation before the fistula puncture with the needle. No extra procedure was performed for the control group. Outcome Measures: Participants completed a visual analogue scale (VAS) right after puncture of the fistula during each HD session. The STAI and HD Comfort Scale were scored at baseline prior to the first HD session and postintervention at the twelfth HD session. Results: The VAS (P < .001) and state anxiety scores (P = .027) were significantly lower in the intervention group than in the control group at all time points, except at baseline. The comfort scale in the intervention group was significantly higher than that in the control group (P < .05). Conclusions: Lavender aromatherapy could be a good option for reducing the pain, anxiety, and discomfort level of HD patients.

From the first to the fourth critical period of COVID-19: what has changed in nursing practice environments in hospital settings?

BACKGROUND: The COVID-19 pandemic reinforced the need to invest in nursing practice environments and health institutions were led to implement several changes. In this sense, this study aimed to analyze the impact of the changes that occurred in nursing practice  environments between the first and fourth critical periods of the pandemic. METHODS: Quantitative, observational study, conducted in a University Hospital, with the participation of 713 registered nurses. Data were collected through a questionnaire with sociodemographic and professional characterization and the Scale for the Environments Evaluation of Professional Nursing Practice, applied at two different points in time: from 1 to 30 June 2020 and from 15 August to 15 September 2021. Data were processed using descriptive and inferential statistics. RESULTS: Overall, the pandemic had a positive impact on nursing practice environments. However, the Process component remained favourable to quality of care, while the Structure and Outcome components only moderately favourable. Nurses working in Medicine Department services showed lower scores in several dimensions of the Structure, Process and Outcome components. On the other hand, nurses working in areas caring for patients with COVID-19 showed higher scores in several dimensions of the Structure, Process and Outcome components. CONCLUSIONS: The pandemic had a positive impact on various dimensions of nursing practice environments, which denotes that regardless of the adversities and moments of crisis that may arise, investment in work environments will have positive repercussions. However, more investment is needed in Medicine Department services, which have historically been characterised by high workloads and structural conditions that make it difficult to promote positive and sustainable workplaces.

Ruptured arteriovenous fistula pseudoaneurysm treatment by balloon-assisted direct percutaneous thrombin injection.

We present the case of a male patient on hemodialysis with a ruptured pseudoaneurysm in a brachiocephalic arteriovenous fistula (AVF) and with edema and pain in the right arm attended to in the emergency department. An ultrasonographic scan identified a ruptured pseudoaneurysm with hemorrhagic infiltration of the arm muscular tissues. We performed a percutaneous ultrasound-guided thrombin injection with an angioplasty balloon inflated in the lumen of the AVF achieving the pseudoaneurysm thrombosis. After 6 months of follow-up, the patient's arteriovenous access remains functional. Percutaneous ultrasound-guided thrombin injection assisted by an angioplasty balloon may be a good alternative to surgical intervention in the treatment of symptomatic growing pseudoaneurysms of the arteriovenous fistula with the benefit of preserving the vascular access.

Radio-cephalic fistula recovered with drainage to median basilic vein by straightening of the forearm cephalic vein: A case report.

The distal arteriovenous fistula (AVF) has less complications and better patency than the proximal fistula, when it works properly. The complications of outflow of the fistula are complex, and it is necessary to analyze all solutions to solve the problem. We introduce a novel approach to solve outflow problems of a radio-cephalic AVF by straightening of the forearm cephalic vein with drainage into the median basilic vein.

Impact of COVID-19 on professional nursing practice environments and patient safety culture.

AIM: To analyse the impact of COVID-19 on professional nursing practice environments and patient safety culture. BACKGROUND: The relationship between work environments and patient safety has been internationally recognized. In 2020, the pandemic imposed enormous challenges, yet the impact on these variables remains unknown. METHOD: This is a quantitative observational study, conducted in a Portuguese hospital, with 403 registered nurses. A self-completion questionnaire was used. RESULTS: The impact on the Structure and Outcome components of nursing professional practice environments was positive. Although the Process component remained favourable to quality of care, a negative trend was confirmed in almost all dimensions. The results regarding safety culture showed weaknesses; 'teamwork within units' was the only dimension that maintained a positive culture. CONCLUSION: Positive responses regarding patient safety were significantly associated with the quality of the nursing professional practice environment. The need to invest in all dimensions of safety culture emerges to promote positive professional environments. IMPLICATIONS FOR NURSING MANAGEMENT: Improving professional nursing practice environments can be achieved through managers' investment in the participation and involvement of nurses in the policies and functioning of institutions, as well as promoting an open, fair and participatory safety culture that encourages reporting events and provides adequate support for professionals.

The reliability and validity of the Turkish version of the postdialysis fatigue scale.

AIM: Haemodialysis (HD) commonly leads to postdialysis fatigue (PDF) and, thus, worsens the quality of life and the clinical outcomes. The aim of this study was to translate, linguistically validate and determine the psychometric properties of the "Postdialysis Fatigue" Scale for Turkish patients with HD. STUDY DESIGN: A methodological study. METHODS: The standard lingual translation and validation methods for the initial translation of the PDF Scale and then assessed the psychometric properties of reliability and validity of the translated scale. Visual analogue scale (VAS) and Piper Fatigue Scale were used to assess concurrent and construct validity. In addition, postdialysis recovery time was used it as an indirect measurement method for PDF. RESULTS: A total of 93 patients participated in the study. The Cronbach's alpha coefficient of PDF was 0.773. There was a statistically significant relationship between the test and retest scores (ICC: 0.973; P < .001). PDF Scale was acceptable with 11 items. There was a positive correlation with a statistically significant relationship was present between the PDF scores and Piper Fatigue Scale (r = .488; P < .001) and VAS score (r = .656; P < .001). There was a statistically significant positive correlation between the PDF Scale and the postdialysis recovery time (r = .270; P = .009), CONCLUSION: The study results have shown that the Turkish form of the PDF Scale is a valid and reliable tool in patients undergoing HD treatment. Postdialysis recovery time may be used as an indirect measurement method to evaluate PDF.

Scale for the Environment Evaluation of Professional Nursing Practice: Construct validation.

AIM: Testing the validity and reliability of the Scale for the Environments Evaluation of Professional Nursing Practice (SEE-Nursing Practice). BACKGROUND: The environment of professional nursing practice is key to achieve better results for clients, nurses and institutions. Therefore, instruments enabling the assessment of all its attributes are required. METHOD: Cross-sectional methodological study. The SEE-Nursing Practice, based on a previous qualitative study and literature review, was applied as a questionnaire. Exploratory and confirmatory factor analyses were used to assess construct validity. RESULTS: A total of 752 nurses participated in the study. Exploratory factor analysis of the SEE-Nursing Practice led to a factor solution with 93 items and three subscales. The Structure, Process and Outcome subscales, respectively, have 43, 37 and 13 items, loaded in 6 factors, 6 factors and 2 factors and explaining 62.6%, 59.2% and 67.4% of the total variance. Cronbach's alpha of the overall scale and of the 3 subscales was greater than 0.90. Confirmatory factor analysis showed a good fit. CONCLUSION: SEE-Nursing Practice is a good valid and reliable instrument. IMPLICATIONS FOR NURSING MANAGEMENT: The SEE-Nursing Practice enables assessing practice environments and is a tool for nursing managers in the definition of strategies ensuring favourable environments for nursing care quality.

Surgical Treatment of Cephalic Arch Stenosis through Rotation of the External Jugular Vein.

The percutaneous transluminal balloon angioplasty or cephalic vein transposition is the treatment for cephalic arch stenosis. In some cases, rotation of the external jugular vein may be a good option for the cephalic arch problems. We describe a new technique to treat cephalic arch stenosis. The technique enables the cephalic arch and subclavian vein to be bypassed altogether through the rotation of the external jugular vein. It consists of 3 small incisions, thus causing minimal surgical damage.

Brachio-Brachial Arteriovenous Fistula Superficialization with Short Skip Incisions.

The exhaustion of superficial venous patrimony or reduced diameter of superficial veins usually prevents patients from having an arteriovenous fistula created. In such cases, using deep vessels can be a more viable option as opposed to an arteriovenous graft. We describe a new approach for the brachio-brachial arteriovenous fistula creation technique. It consists of 3 small incisions, thus causing minimal surgical damage. We have found it to be better tolerated by the patients and well received by dialysis nurses. This procedure also allows improved access for cannulation and more available puncture sites.

Effect of Dialysis Day on Intradialytic Hypotension Risk.

BACKGROUND/AIMS: Intradialytic hypotension (IDH) is a serious and frequent complication of hemodialysis (HD). Thus far, data are scarcely available to assess the impact of first versus subsequent HD sessions of the week in IDH. Therefore, the purpose of this work was to evaluate IDH risk in patients on thrice-weekly HD. METHODS: We conducted an analysis of all blood pressure (BP) measurements obtained during 492 HD treatments given to 41 prevalent adult patients over a one month period. A logistic regression model for repeated binary observations was used to determine the association between hypotension and patient and dialysis factors. RESULTS: The incidence of IDH was 32.5%. First dialysis session of the week was associated with a 9% higher risk of hypotension relatively to the second one. The risk was even higher from the first to the third session of the week (60%) and from the second to the third (50%). A higher hypotension odds ratio was also associated with age (1.03, 90% CI: 1.01-1.06), higher predialysis BP (1.04, 90%CI: 1.03-1.05) and higher phosphorus level (1.38, 90% CI: 1.07-1.76). The risk decreased 24.4% for each additional antihypertensive drug taken by the patient. CONCLUSIONS: The odds of hypotension occurrence decrease throughout dialysis sessions of the week. Minimizing modifiable risk factors may decrease IDH episodes.

Construction and validation of a scale of assessment of self-care behaviours anticipatory to creation of arteriovenous fistula.

AIMS AND OBJECTIVES: We developed a scale to assess the self-care behaviours developed by patients with end-stage renal disease to preserve the vascular network prior to construction of arteriovenous fistula. BACKGROUND: The possibility of creation of an arteriovenous fistula depends on the existence of an arterial and venous network in good condition, namely the size and elasticity of the vessels. It is essential to teach the person to develop self-care behaviours for the preservation of the vascular network, regardless of the modality of dialysis selected. DESIGN: Methodological study. METHODS: The scale was developed based on clinical experience and research conducted by the researcher in the area of the vascular access for haemodialysis. The content of the scale was judged by two panels of experts for content validity. The revised version of the scale was administered to a convenience sample of 90 patients with end-stage renal disease. In the statistical analysis, we used the Cronbach's alpha, the Kaiser-Meyer-Olkin and scree plot and the principal component analysis with varimax rotation. RESULTS: A principal component analysis confirmed the univariate structure of the scale (KMO = 0·759, Bartlett's sphericity test-approximate χ(2) 142·201, p < 0·000). Cronbach's α is 0·831, varying between 0·711-0·879. CONCLUSION: This scale revealed properties that allow its use to assess the patients self-care behaviours regarding the preservation of the vascular network. RELEVANCE TO CLINICAL PRACTICE: This scale can be used to evaluate educational programmes for the development of self-care behaviours in the preservation of vascular network. This scale can identify not only the patients that are able to take care of their vascular network but also the proportion of patients who are not able to do it, that need to be educated.

Interventions to promote self-care of people with arteriovenous fistula.

AIMS AND OBJECTIVES: The literature shows many self-care behaviours related to people with end-stage renal disease (ESRD). Our aim is to identify interventions within the 'teaching' that promote self-care (behaviour) with arteriovenous fistula (AVF). BACKGROUND: The development of self-care behaviours with the AVF allows the access to maintain the best possible conditions, because its state influences the efficacy of the dialysis treatment. However, few studies assess self-care behaviours that people with ESRD have with the AVF, as well as interventions that promote this self-care. DESIGN: Discursive paper. METHODS: Our research was conducted in MEDLINE, Health Nursing and Allied Literature (CINAHL), Web of Science and SCOPUS using three search expressions, between the period of 2000-2010. We selected studies that identified interventions that promote self-care with AVF. RESULTS: No study has shown in detail the interventions that aimed at promoting self-care behaviours with the AVF for patients with ESRD. We verify that the interventions that promote self-care are directed mostly to the moments after AVF construction. CONCLUSIONS: This paper reinforces the need to develop guidelines that provide guidance for self-care with the AVF to be developed by people with ESRD. We also found that self-care behaviours directed to the AVF are mostly associated with postconstruction of the access. RELEVANCE TO CLINICAL PRACTICE: Based on these results, it is necessary to delineate clear intervention programmes and objectives, in order to assess self-care with the AVF by people with ESRD, as well as to develop guidelines that provide guidance for self-care for the person with an AVF.

Educational video for self-care with arteriovenous fistula in renal patients: randomized clinical trial.

OBJECTIVE: to evaluate the effect of an educational video on the knowledge, attitude, and practice of self-care with arteriovenous fistula in patients undergoing hemodialysis treatment. METHOD: randomized controlled clinical trial, with two arms and single-blind. The intervention used an educational video on arteriovenous fistula self-care. The Fistula Self-Care Knowledge, Attitude, and Practice Scale was applied to 27 renal patients on hemodialysis in the control group and 28 in the intervention group at baseline, after seven and fourteen days. The data was analyzed using the Statistical Package for the Social Sciences software, using the chi-square test, Student's t-test, Mann-Whitney test, and Friedman's test with post-hoc analysis for multiple comparisons. RESULTS: there were statistically significant differences in the knowledge and practice of self-care with the fistula at 0, 7 and, 14 days in the intervention (p= 0.004 and p<0.001, respectively) and control groups (p<0.001 for knowledge and practice). Attitude showed a significant difference at follow-up (p<0.001), but the post-hoc analysis did not confirm the significance obtained. CONCLUSION: patients' knowledge and practice showed significant increases at follow-up in the control and intervention groups, while the increase in attitude was not significant in either group. Clinical trial, registration number: U1111-1241-6730.

Advancing arteriovenous fistula needling: The role of physical exam and doppler ultrasound.

BACKGROUND: The success of haemodialysis (HD) critically depends on the effective use of arteriovenous fistulas (AVFs). The precise needling technique is vital to minimise complications and ensure functional vascular access. OBJECTIVE: This study assesses the effectiveness of a nursing consultation protocol, which integrates physical examination (PE) with Doppler Ultrasound (DUS), in preparing patients for the first AVF needling. DESIGN/PARTICIPANTS: A cross-sectional analysis at a Portuguese National Health Service Hospital engaged thirty new HD patients, four HD needling experienced nurses and one HD vascular access nurse. This study examines the accuracy of PE in assessing the matured AVF by the four nurses compared to a trained vascular access nurse encompassing systematic PE and DUS. MEASUREMENTS: The primary data incorporated AVF characteristics derived from PE (inspection, palpation, and auscultation) and DUS findings (vein depth, diameter, and blood flow). A secondary focus was evaluating the change in nurses' perceived needling complexity following the nursing consultation. RESULTS: The nursing consultation significantly enhanced the identification of crucial AVF features, such as accessory veins (p = 0.002), and improved the accuracy of AVF morphology assessments. This led to identifying longer needling tracks (p = 0.031) and a higher number of safe needling points (p = 0.016). Nurses reported a notable reduction in perceived complexity and potential adverse events following this method (p = 0.027). CONCLUSIONS: Integrating structured PE with DUS in a nursing consultation framework significantly improves the preparation for AVF needling. This approach enhances the efficiency and safety of AVF needling and boosts nurse confidence and patient care in HD settings.

Development and Psychometric Testing of Scales of Knowledge, Attitude, and Practice of Self-Care for Patients With Arteriovenous Fistula.

Background and Purpose: To validate the scales of knowledge, attitude, and practice of self-care for arteriovenous fistulas in renal patients on hemodialysis. Methods: A methodological study verified the evidence of validity based on the content, response processes, and internal structure of the scales. The content was evaluated by six judges, and the response processes were verified with six patients. In the evaluation of the internal structure, the scales were applied to 220 patients for exploratory factor analysis with evaluation of McDonald's omega adjustment and calculation indexes. Results: The scales explained variance and McDonald's omega values of 40.4%/0.896, 60.7%/0.843, and 36.9%/0.702 for the knowledge (19 items), attitude (4 items), and practice (8 items), respectively. Conclusions: The scale of attitude was valid after the analysis of the content evidence, response processes, and internal structure. The arteriovenous fistula self-care knowledge and practice scales explained less than 50% of the constructs. Therefore, it is recommended that new studies be conducted to validate scales of knowledge and practice of fistula self-care.

Maintaining Vascular Access Response in a Severely COVID-19 Hit Country.

INTRODUCTION: The COVID-19 pandemic has caused an unprecedented disruption in healthcare systems worldwide, and Portugal was no exception. We analyze the impact of the COVID-19 pandemic in activity of our Vascular Access Center (Grupo Estudos Vasculares - GEV). MATERIAL AND METHODS: This is a retrospective study, during March 2019 and February 2021. An analysis of surgical and appointments records in 2,495 patients from 25 hemodialysis centers followed by GEV was performed. Patients were divided into two periods: non-pandemic (NPP) (March 2019 to February 2020) and pandemic periods (PP) (March 2020 to February 2021). The number of surgeries and appointments were analyzed per month and per week. The number of thrombosis were analyzed in both periods. Normality was tested by the Shapiro-Wilk test and by the Lilliefors (Kolmogorov-Smirnov) test. Comparisons were made by the t-test (paired samples) when normality was not rejected and by the Wilcoxon test otherwise. All the variables (normal or otherwise) were described by the usual descriptive measures such as the mean, median and quartiles. No categorical data were collected. To avoid COVID-19 infection a set of measures were created: Sars-cov-2 PCR test for every patient, individual protection equipment for staff, rotating teams and schedules, and only one patient allowed in the circuit to the intervention room. A descriptive statistical analysis was performed with SPSS version28. The statistical significance was confirmed for p-value < 0.05. RESULTS: A total of 1756 surgeries and 800 appointments were made in both PP and NPP. Comparing the periods, we performed 914 (52%) interventions in the NPP and 842 (48%) in PP, 423 (53%) consultations in NPP and 377 (47%) at PP. Comparing the NPP and PP by months we observed more appointments in the NPP (p=0.004). However, the difference in the number of surgeries did not reach statistical significance (p=0.533). There were more thrombosis during the summer and fall in the NPP and PP. A total of 138 in NPP and 131 in PP thrombosis were observed in the 2 years period. There was no record of COVID-19 infections between all GEV staff (n=25). CONCLUSION: Due to timed and tight set of measures taken in the pandemic lockdown by GEV, a similar clinical and surgical activity regarding hemodialysis patients was obtained in both periods (PP and NPP). The hypothesis that the PP could diminish vascular access assessment/intervention or more thrombosis could occur was not verified at our institution. The set of measures established to deal with the COVID-19 pandemic was also effective to prevent infection in staff members.

Skin pigmentation as landmark for arteriovenous fistula cannulation in hemodialysis.

BACKGROUND: The cannulation of the arteriovenous fistula (AVF) for hemodialysis (HD) has traditionally depended on the nurse's tactile sensation, which has been associated with suboptimal needle placement and detrimental effects on vascular access (VA) longevity. While the introduction of ultrasound (US) has proven beneficial in mapping the AVF outflow vein and assisting in cannulation planning, aneurysmal deformations remain a common occurrence resulting from various factors, including inadequate cannulation techniques. Within this context, the utilization of skin pigmentation as a clinical landmark has emerged as a potential approach to enhance cannulation planning in HD. METHODS: A prospective longitudinal study was undertaken to investigate the correlation between the occurrence of venous morphological deformations and the cannulation technique guided by skin pigmentation after a 2-month period of implementation. RESULTS: Thirty patients were enrolled in the study with 433 cannulations being described within the first 2 months of AVF use. The overall rate of cannulation-related adverse events was 21.9%. Comparative analysis demonstrated a statistically significant relationship (p < 0.001) between aneurysmal deformation and non-compliance with the proposed cannulation technique, resulting in cannulation outside the designated points. Non-compliance was primarily attributed to nurse's decision (57.1%). CONCLUSION: The integration of US mapping of the AVF outflow vein and the utilization of skin pigmentation as a guiding tool have shown promising results in enhancing cannulation planning over time. Consistent adherence to a cannulation technique other than the area technique has been found to reduce the risk of AVF morphological deformation. These findings underscore the potential benefits of incorporating skin pigmentation as a clinical landmark in cannulation practices, highlighting its ability to impact positively cannulation outcomes.