Wei-Ming Chen

Abstract Background: Thoracoscopic wedge resection has become a standard procedure for pulmonary nodule management, yet postoperative air leak (PAL) remains a prevalent complication. While bovine pericardial patches are established in cardiovascular surgery, their utility in pulmonary resection merits further investigation. This study aimed to assess the efficacy of bovine pericardial patches in reducing PAL after thoracoscopic wedge resection and develop a predictive model for clinical utility.

While perturbation theories constitute a significant foundation of modern quantum system analysis, extending them from the Hermitian to the non-Hermitian regime remains a nontrivial task. In this work, we generalize the Rayleigh-Schrödinger perturbation theory to the non-Hermitian regime by employing a geometric formalism. This framework allows us to compute perturbative corrections to eigenstates and eigenvalues of Hamiltonians iteratively to any order.