Table 2: Feasibility analysis of various approaches to the supradiaphragmatic IVC.

FeasibilityEasyDifficultImpossibleAverage (points)
(N)(%)(N)(%)(N)(%)

Transverse diaphragmotomy1131.42057.2411.460
T-shaped diaphragmotomy2674.3925.70087.1
Circular diaphragmotomy28807350090
IVC isolation in the pericardium14401954.325.767.1