Utility of Exercise-induced Zero TBI Sign in Patients on Maintenance Hemodialysis

Abstract

It is uncertain whether exercise-induced zero toe brachial index sign (e-ZETS) is beneficial to prevent advanced perfusion disturbance in maintenance hemodialysis (HD) patients. In HD patients, we compared the clinical findings and prognoses among 22 toes in a resting zero toe brachial index sign (r-ZETS) group, 22 toes in an e-ZETS group, and 63 toes in a non-e-ZETS group. The hemodynamics of the lower extremities in the e-ZETS group is intermediate between the r-ZETS and non-e-ZETS groups. As the result of a 36-month follow-up observation, the r-ZETS avoidance rate was significantly lower in the e-ZETS group (63.6%; P<0.001) than the non-e-ZETS group (98.4%), showing that it was difficult to avoid advanced perfusion disturbance. The e-ZETS in HD patients may appear before r-ZETS, being beneficial as a predictor for advanced perfusion disturbance.