Mortality Rates in Patients Undergoing Urgent Versus Elective Transcatheter Aortic Valve Replacement: A Meta-analysis.

Patients with severe aortic stenosis (AoS) often present with acute heart failure and compensation, frequently leading to cardiogenic shock. Transcatheter Aortic Valve Replacement (TAVR) has been recently performed as a bailout treatment in such patients. The aim of our meta-analysis is to compare urgent TAVR with elective procedures. We systematically screened three databases searching for studies comparing urgent vs elective TAVR. Primary endpoint is the 30-days mortality. Secondary endpoints included in-hospital mortality, device success, periprocedural vascular complications, 30-days stroke, 30-days acute kidney injury (AKI), permanent pacemaker implantation (PPM), moderate or severe paravalvular leakage, and 30-days bleeding. Seventeen studies were included, with a total of 84,495 patients. Urgent TAVR was associated with an increased risk for 30-days mortality [Risk Ratio (RR): 2.53, 95% Confidence Intervals (CI): 1.81-3.54)], in-hospital mortality (RR: 2.67, 95% CI: 1.94-3.68), periprocedural vascular complications (RR: 1.91, 95% CI: 1.28-2.85) and AKI (RR: 2.83, 95% CI: 1.93-4.14), compared with elective procedure. No differences were observed in the other secondary endpoints. Urgent TAVR was associated with higher in-hospital and 30-days mortality, possibly driven by the increased incidence of AKI and vascular complications in urgent TAVR. The results highlight the importance of early TAVR in stable AoS patients.