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Effect of Exercise on Endothelial Function and Vascular Compliance in Chronic Kidney Disease

Kidney Failure, Chronic Clinical Trial

Official title:
Effect of Forearm Exercise on Flow Mediated Vasodilation Prior to Arteriovenous Fistula Placement for Hemodialysis

Clinical Trial Summary

The study hypothesis is that 6 weeks of repetitive handgrip exercise will improve endothelial function and venous compliance in pre-dialysis patients with an estimated glomerular filtration rate of less than or equal to 20 ml/min. If proven correct then arm exercise might be useful to improve the success rate for a surgically created arteriovenous fistula in the forearm to become usable as a vascular access for hemodialysis.

Clinical Trial Description

An arteriovenous fistula (AVF) is the optimal vascular access for chronic hemodialysis. However, AVFs frequently fail to mature. Better strategies are needed to promote AVF maturation. Successful AVF maturation involves arterial and venous dilation. Arterial dilation depends on endothelial release of nitric oxide which can be measured by brachial artery flow-mediated dilation (FMD) and has been reported to predict successful AVF maturation. Venous dilation depends on venous compliance which can be measured by venous plethysmography and is also predictive of successful AVF maturation. Endothelial function is impaired in patients with chronic kidney disease (CKD). Aerobic exercise has been reported to improve endothelial function and venous compliance but it has not been studied in the pre-dialysis patient. To address this question we will determine whether 6 weeks of repetitive handgrip exercise with upper arm venous compression can improve brachial artery endothelial function or venous compliance in pre-dialysis patients with an estimated glomerular filtration rate of less than or equal to 20 ml/min. ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Basic Science

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT01068314
Study type Interventional
Source University of Iowa
Contact
Status Completed
Phase N/A
Start date January 2007
Completion date June 2010
View Details
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