Abstract
Hemodynamics of various sized and shaped shunt tubes were tested under mock circuratory system with pulsatile flow to develope more effective temporary bypass tube for thoracic aneurysm. These tubes were classified as Group A:tapered tube, Group B-I: straight tube, Group B-II: tapered tube with different inner diameter at proximal and distal orifice, Group B-III: tapered tube with side hole. Every tube except Group B-I showed adequate hemodynamics for clinical use. Bypass flow in every group was not affected by changes in heart rate from 75bpm to 125bpm.
