Eighteen-month outcome of pulmonary valve stent implantation by direct right ventricle puncture: an animal study.

Objective: The purpose of this study was to investigate the feasibility and safety of pulmonary valve implantation via direct right ventricle puncture.

Methods: A standard thoracotomy and direct right ventricle puncture were performed in 8 healthy sheep to implant the pulmonary valve stents. Animals were followed up for 18 months.

Transcatheter closure of perimembranous ventricular septal defects using a novel wire-maintaining technique.

Objectives: We aimed to evaluate the clinical feasibility and safety of a novel wire-maintaining technique (WMT) for transcatheter closure of perimembranous ventricular septal defects (PmVSDs).

Background: Transcatheter device closure of PmVSDs has been increasingly performed and this procedure is now offered as primary therapy at many institutions.

Methods: A total of 103 patients with complex PmVSDs were randomized to either the conventional technique (CT) group (n = 51) or the WMT group (n = 52).

Transcatheter closure of postoperative residual perimembranous ventricular septal defects.

Background: The presence of postoperative residual perimembranous ventricular septal defect (PmVSD) is relatively uncommon. However, reoperation might be associated with an increased surgical risk. Transcatheter device closure is an alternative strategy for management of postoperative residual defects.