AVF Stenosis by Electronic Stethoscope

NCT07436559 | Completed

• 2 other identifiers: 202302099RINAAVF stenosis detection
• Study Type: observational
• Target: 30
• Locations: 1 country
• Sites: 1

Brief Summary

The prevalence rate of hemodialysis in Taiwan is the highest in the world, and the number of new cases of hemodialysis and the death rate are gradually increasing every year. Long-term hemodialysis patients must receive dialysis through the arteriovenous fistula. If the arteriovenous fistula is narrowed, the dialysis effect will be poor or the dialysis will not be possible due to blockage, resulting in complications and mortality. The detection of the arteriovenous fistula must rely on the assistance of professionals. \* Is it easier for clinicians to detect arteriovenous fistula stenosis by an electronic stethoscope? This study uses an electronic stethoscope to take the hemodialysis center of Douliu District, Yunlin Branch of National Taiwan University Hospital as the experimental site. Select 30 patients who need long-term dialysis, adults (20-99 years old) who have been on dialysis for more than 3 months and have arteriovenous fistula. The experiment period lasted for 3 months, and each person received 2-3 voices per week, about 1080 voices. The main purpose is to use the electronic stethoscope and the experience of traditional professionals, hoping to detect and predict the stenosis in advance. The important key factors of vascular access stenosis in hemodialysis patients were found through regression analysis of the Albumin value and clinical data obtained from routine treatment of patients of a fixed blood test in monthly hemodialysis center.

Conditions

End Stage Renal Disease (ESRD)

Keywords

Hemodialysis, Electronic Stethoscope, Arteriovenous Fistula, Regression Analysis

Outcome Measures

Primary Outcomes (1)

• AVF stenosis

  Clinical stenosis: Diagnosed by attending nephrologist based on physical examination abnormalities (high-pitched bruit, pulsatile flow, diminished thrill) - Confirmed by Doppler ultrasound showing \>50% diameter reduction - Intervention: Percutaneous transluminal angioplasty (PTA)

  From enrollment to the end of study at 3 months

Secondary Outcomes (1)

• Abnormal AVF sound threshold

  From enrollment to the end of study at 3 months

Interventions

Detection and Prediction of the stenosis of arteriovenous fistula in hemodialysis patients by an electronic stethoscope DEVICE

The detection of the arteriovenous fistula must rely on the assistance of professionals by palpation or a conventional stethoscope. This study will investigate the detection and prediction of arteriovenous fistula stenosis in hemodialysis patients by an electronic stethoscope.

Eligibility Criteria

• Age: 20 Years - 99 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

End stage renal disease patients received hemodialysis for more than 3 months

You may qualify if:

• Age 20-99 years - Chronic hemodialysis ≥3 months - Functional arteriovenous fistula (AVF) - Ability to provide informed consent

You may not qualify if:

• Arteriovenous graft (AVG) - Central venous catheter (Permcath) - Vulnerable populations unable to consent

Sponsors & Collaborators

• National Taiwan University Hospital: lead

Study Sites (1)

National Taiwan University Hospital Yunlin Branch

Douliu, Taiwan, 640, Taiwan

Location

MeSH Terms

Conditions

Kidney Failure, Chronic; Arteriovenous Fistula

Condition Hierarchy (Ancestors)

Renal Insufficiency, Chronic; Renal Insufficiency; Kidney Diseases; Urologic Diseases; Female Urogenital Diseases; Female Urogenital Diseases and Pregnancy Complications; Urogenital Diseases; Male Urogenital Diseases; Chronic Disease; Disease Attributes; Pathologic Processes; Pathological Conditions, Signs and Symptoms; Arteriovenous Malformations; Vascular Malformations; Cardiovascular Abnormalities; Cardiovascular Diseases; Vascular Fistula; Vascular Diseases; Congenital Abnormalities; Congenital, Hereditary, and Neonatal Diseases and Abnormalities; Fistula; Pathological Conditions, Anatomical

Study Design

• Study Type: observational
• Observational Model: OTHER
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: February 22, 2026
• First Posted: February 27, 2026
• Study Start: March 17, 2023
• Primary Completion: June 16, 2023
• Study Completion: September 30, 2023
• Last Updated: February 27, 2026

Record last verified: 2023-03

Data Sharing

• IPD Sharing: Will not share

Locations

TW (1)