Long-Term Impact of Arteriovenous Fistula Ligation on Cardiac Structure and Function in Kidney Transplant Recipients:...

Area of Science:

• Nephrology
• Cardiology
• Transplantation Medicine

Background:

• The long-term impact of arteriovenous fistula (AVF) ligation on cardiovascular structure post-kidney transplantation is not well-established.
• A prior randomized controlled trial (RCT) indicated AVF ligation at 6 months post-transplant reduced left ventricular mass (LVM).
• This study aimed to assess the sustained effects of AVF ligation on cardiovascular parameters.

Purpose of the Study:

• To evaluate the long-term evolution of cardiovascular magnetic resonance imaging (CMR)-derived parameters after AVF ligation in kidney transplant recipients.
• To compare cardiovascular structure at long-term follow-up with measurements taken 6 months post-AVF ligation.

Main Methods:

• A long-term follow-up observational cohort study was conducted on patients from a previous RCT.
• Cardiovascular magnetic resonance imaging (CMR) was performed at a median of 5.1 years post-AVF ligation.
• Changes in left ventricular mass (LVM) and LVM index were compared to 6-month post-intervention measurements.

Main Results:

• At a median of 5.1 years, statistically significant further reductions in LVM (-17.6±23.0 g, P=0.006) and LVM index (-10.0±13.0 g/m², P=0.006) were observed.
• These findings indicate a persistent effect of AVF ligation on cardiac remodeling.

Conclusions:

• The cardiovascular benefits of AVF ligation, specifically LVM and LVM index regression, appear to be sustained over the long term.
• Continued reduction in cardiac remodeling post-AVF ligation holds potential for significantly decreasing cardiovascular mortality in kidney transplant patients.