Case Report: Transcatheter aortic valve implantation using balloon-expandable bioprosthesis in patients with severe pure aortic regurgitation on noncalcified native valves: a series of cases.

Background: For individuals with pure aortic regurgitation (AR), transcatheter aortic valve implantation (TAVI) is cautiously recommended only for those with a high or prohibitive surgical risk. We aimed to describe the results of a case series of transcatheter implantation of a balloon-expandable aortic valve bioprosthesis (BEV) for the treatment of noncalcified native valve AR.

Methods: From February 2022-November 2022, we performed TAVI in patients with severe pure AR.

[Treatment of pulmonary vein stenosis after percutaneous ablation of atrial fibrillation].

This case report describes a patient with persistent atrial fibrillation (AF) submitted to radiofrequency catheter ablation of AF through the pulmonary vein antrum isolation technique, who developed a severe stenosis of the left superior pulmonary vein (LSPV), without presenting any symptoms. The diagnosis of the PV stenosis was made by a routine postprocedure computed tomography scan of the left atrium, and the patient was subsequently submitted to angioplasty with stenting of the LSPV, resulting in the normalization of pulmonary perfusion, as seen by ventilation/perfusion scan made three months after the LSPV angioplasty.