Clinical characteristics, prognostic factors, and outcomes of ventricular septal rupture in patients with acute myocardial infarction.

Ventricular septal rupture (VSR) is a rare but devastating complication in patients with acute myocardial infarction (AMI). This was a retrospective single-center observational study which aimed to assess the characteristics and outcomes of VSR patients and identify risk factors for in-hospital mortality of VSR patients in the era of percutaneous intervention. Patients with VSR after AMI at the First Affiliated Hospital of Xi'an Jiaotong University from January 2016 to December 2020 were enrolled. Among 5395 consecutive patients with AMI, 42 patients (0.78%) were diagnosed with VSR. Left anterior descending coronary artery was the culprit vessel in most cases (84.4%, 27/32). In the multivariate analysis, female sex (odds ratio (OR): 14.043, 95% confidence interval (CI): 1.396-141.283, p = 0.025) and lower platelet count on admission (OR: 0.979; 95% CI: 0.963-0.995; p = 0.009) were significant risk factors of in-hospital death in VSR patients. In all, 11 patients (26.2%) underwent surgical repair, and the rest were treated medically. The 1-year mortality was lower in the surgical group (36.4%, 4/11) than that in the conservative group (74.2%, 23/31) (p = 0.034). During the follow-up, VSR patients treated surgically tended to have a higher long-term survival rate than those treated medically (log rank χ = 5.005, p = 0.025). The prognosis of patients with VSR remained poor in this study. Female sex and lower platelet count were independent risk factors of in-hospital death in VSR patients. The long-term survival rate of patients treated with surgical repair was significantly better than that of patients treated conservatively.