Survival of analysis of older patients with external iliac vein tunneled cuffed catheters on maintenance hemodialysis

Objective To investigate the survival of older patients with iliac vein tunneled cuffed catheters on maintenance hemodialysis. Methods A total of 70 older patients with external iliac vein tunneled cuffed catheters on maintenace hemodialysis were included in this study, there were 94 patients with internal jugular vein tunneled cuffed catheters as control group. The baseline anthropometric and 1aboratory parameters were measured. The catheter dysfunction and catheter related complications were documented. Results There were lower survival rate and catheter survival in the external iliac vein group compared with internal jugular vein group（χ2=13.714, P＜0.01;χ2=13.093, P＜0.01）. Compared with internal jugular vein group, there was lower rate of catheter infection in external iliac vein group(χ2=9.416, P＜0.01); In addition, there were higher rate of cardiovascular disease(CVD) events and catheter dysfunction among patients in external iliac vein group (χ2=7.492, P＜0.01;χ2=5.912, P＜0.05). Furthermore, the incidence of catheter dysfunction and cardiovascular disease events were the independent risk factors of mortality for older patients with iliac vein tunneled cuffed catheters on maintenance hemodialysis by Cox regression model. Conclusions Patients with iliac vein tunneled cuffed catheters have a shorter survival time. Those with catheter dysfunction or cardiovascular disease events are in higher risk of mortality．