The Relationship Between the Flow of Arteriovenous Fistula and Cardiac Function in Haemodialysis Patients

Study of Access Flow ,Access Recirculation of Arteriovenous Fistula and the Relationship With Cardiac Function

A prospective longitudinal surveillance for a period of 2 months. Sample - identify suitable Chronic Kidney Disease (CKD) patients who undergo HD with functioning AVF. Participants at various age range and both sexes are recruited to observe their access flow, access recirculation and cardiac function and assess their relationship.

All patients recruited who met the inclusion criteria were investigated access flow, access recirculation and cardiac function(including cardiac output,cardiac index,central blood volume,et al).Measurement time is the beginning of HD session (first 30min to 1 hr),Middle of HD session (optional),and the end of the HD session (1hr to 30 min prior to end of session). The follow-up duration is 6 months and 12 months.Repeat the assessment at the above time points.

Inclusion Criteria:

• Patients undergo HD with native AVF
• AF of AVF between 300ml/min and 1800ml/min

Exclusion Criteria:

• Patients whose AVF developed Access Recirculation (AR) which cannot be resolved at the time of measurement
• Patients developed access or systemic infection during the study period