Distance From the RPCB to the RSPV and the Association Between Them and PNI
(A) The distance from the right peri-cardiophrenic bundle (RPCB) to the ostium of the right superior pulmonary vein (RSPV) on the y axis. The x axis shows the patients with and without phrenic nerve injury (PNI). (B) For the association between the distance from the RPCB to the RSPV ostium and the PNI, the area under the curve (AUC) was found to be 0.968 (95% confidence interval [CI]: 0.922 to 1.000). The optimal cutoff point for the distance for predicting the right PNI was 12.4 mm (sensitivity 96.6%, specificity 88.9%).