Ahmad, Soban, Yousaf, Amman, Ghumman, Ghulam Mujtaba, Dvalishvili, Mariam, Ahsan, Muhammad Junaid, Dilibe, Arthur, Reis, Heidi Lynn, Qavi, Ahmed Hassaan, Szerlip, Molly, and Goldsweig, Andrew Michael
Calcific aortic stenosis is the principal indication for transcatheter aortic valve replacement (TAVR). Comorbid mitral annular calcification (MAC) is often present in patients undergoing TAVR. Limited data exist on the impact of MAC on TAVR outcomes. We conducted a systematic review and meta-analysis to explore the effects of MAC and concomitant mitral valve dysfunction (MVD) on TAVR outcomes. A comprehensive literature review was conducted using PubMed, Embase, Google Scholar, ClinicalTrials.gov, Scopus, and OVID for studies until March 20, 2023. Using the random-effects Mantel-Haenszel method, we calculated pooled risk ratios (RRs) and their corresponding 95 % confidence intervals (CIs) for all dichotomous variables. Six studies comprising 5822 patients (2541 with MAC [severe MAC (>4 mm thickness) 583; non-severe MAC 1958; 400 with MVD; and 1071 without MVD], 3281 without MAC) met inclusion criteria. At 30 days and 1 year, no significant differences were observed between the overall MAC and no MAC groups in terms of mortality, stroke, and permanent pacemaker implantation. However, MAC with MVD was associated with a higher risk of all-cause mortality compared to MAC without MVD at 30 days (RR = 3.43, 95 % CI 2.04–5.76, P < 0.00001) and at 1 year (RR = 2.44, 95 % CI 1.85–3.20, P < 0.00001). Moreover, the risk of cardiovascular mortality was higher in patients with MAC and MVD compared to those with MAC alone (RR = 2.77, 95 % CI 1.89–4.06, P < 0.00001). Additionally, patients with severe MAC had a higher risk of major bleeding at 30 days compared to the non-severe MAC group (RR = 1.33, 95 % CI 1.04–1.69, P = 0.02). TAVR appears to be safe in patients with non-severe MAC, but severe MAC is associated with a higher risk of major bleeding and concomitant MVD increases the mortality risk in patients undergoing TAVR. [Display omitted] • This study explores the impact of mitral annular calcification (MAC) and concomitant mitral valve dysfunction (MVD) on transcatheter aortic valve replacement (TAVR) outcomes. • Severe MAC was associated with a higher risk of major bleeding, while MAC with MVD increased the risk of all-cause and cardiovascular mortality. • TAVR was generally safe for patients with non-severe MAC. • The findings of this review highlight the importance of evaluating for MVD in patients with MAC undergoing pre-TAVR workup. [ABSTRACT FROM AUTHOR]