Observed Mortality and Postoperative Outcomes
Table 3 indicates that the 30-day mortality rate was higher (p = 0.01) in the MVR group, consistent with their increased preoperative risk profile (Table 1). In patients undergoing replacement, the prevalence of sepsis (p = 0.03), pulmonary complications (p = 0.0008), and surgical re-exploration (p = 0.04), was higher than in the repair group. There was no difference between groups concerning perioperative MI, pacemaker insertion, atrial fibrillation, acute kidney injury, sternal wound infection, or permanent neurological events (Table 3). However, MVR patients had significantly higher resource utilization, including higher duration of mechanical ventilation (p < 0.0001), longer intensive care unit stay (p = 0.03), and hospital stay (p < 0.0001) than the repair group (Table 3).