T . Takeichi et al .: J Extra Corpor Technol 2023 , 55 , 201 – 205 203
Figure
2 . Preoperative contrast CT indicates that omental tissue covers from the right atrium to the entire surface of the aorta . CT : Computed Tomography .
Figure 3 . ECG of systemic hyperkalemia during CPB shows a blood potassium level of 8 mEq / L . ECG : Electrocardiogram ; CPB : Cardiopulmonary bypass .
Discussion
Reoperative valve surgery is acknowledged to be more complex and increases morbidity and mortality rates [ 1 ]. The techniques of MV reoperation are becoming important because many patients have received MV repair or bioprosthetic valve replacement over the last few decades , and these patients are prone to revisional operations in the future . The right thoracotomy approach for reoperations enables optimal exposure of the MV . Redo MV procedures can be performed on either the empty BH or in case of VF arrest and systemic hyperkalemia arrest [ 2 , 6 ]. However , some researchers showed that the VF approach is inferior to the empty heart technique due to its reduction in oxygen delivery to the sub-endocardium