Voigtländer L, Twerenbold R, Schäfer U, et al. - Researchers conducted this study with the aim to determine the impact of underweight on mortality after transcatheter aortic valve implantation (TAVI) and surgical aortic valve replacement (SAVR) and investigated how intervention mode (TAVI vs SAVR) associates mortality in underweight patients from the German Aortic Valve Registry. Among 35,109 studied patients treated with TAVI or SAVR, underweight was reported in 5.7% in patients undergoing TAVI and 2.9% in patients undergoing SAVR. Per observations, patients undergoing TAVI or SAVR are rarely underweight, but, when evident, it is associated with increased mortality. Especially severely underweight SAVR patients exhibited excess mortality rates.