Tricuspid regurgitation is the most prevalent valvular disease, and one its primary treatment was surgical tricuspid valve biological valve replacement. Catheter tricuspid valve-in-valve implantation is a novel interventional alternative for biological valve failure. The non-invasive pulmonary water measuring device ReDSTM has been increasingly incorporated into clinical practice as a means of monitoring chronic heart failure in recent years. This report describes the process and outcomes of the first instance of perioperative lung fluid volume evaluation following transcatheter tricuspid valve implantation utilizing ReDS technology. The patient had a short-term, substantial increase in postoperative lung fluid volume as compared to baseline.