Perioperative myocardial injury/infarction (PMI) significantly impacts older patients undergoing major noncardiac surgery, as demonstrated in a multicenter prospective study involving 4,634 individuals aged 70 and older with substantial comorbidities. The study revealed that PMI occurred in 19.2% of these patients, a notably higher incidence compared to younger cohorts (P < .0001). The findings highlight that patients experiencing PMI faced a stark increase in all-cause mortality—26.2% at one year versus 13.2% in those without PMI—and a major adverse cardiac event (MACE) rate of 30% compared to 13%.

The study underscores the critical importance of monitoring PMI in older surgical patients, particularly within the first 90 postoperative days, where the hazard ratios for mortality and MACE were most pronounced. On postoperative day 1, the hazard ratio for all-cause mortality reached 10.5 (95% CI 4.5–24.5), indicating that early detection and intervention could be vital for improving patient outcomes. This temporal aspect of PMI suggests a window for targeted therapeutic strategies that could mitigate the risks associated with surgical procedures in this vulnerable population.

These findings prompt a reevaluation of perioperative care protocols for older patients, emphasizing the need for enhanced cardiovascular monitoring and risk stratification during the perioperative period. The clear association between PMI and elevated mortality and MACE rates suggests that integrating cardioprotective measures into surgical planning may not only improve immediate postoperative outcomes but also extend overall healthspan in aging populations. This study could influence future guidelines and clinical practices, potentially accelerating the development of tailored interventions aimed at reducing PMI-related complications in older adults.

Source: academic.oup.com