Perioperative medicine & outcomes

Myocardial Injury After Noncardiac Surgery in Major General Surgical Patients a Prospective Observational Cohort Study

Ann SurgPublished Prospective cohort study

Main finding · 30-day all-cause mortalityResult — go to the resultAdjusted odds ratio 4.7 95% CI 3.0–7.4

Authors' conclusion

Approximately 1 in 6 patients experienced MINS after major general surgery. MINS was independently associated with a nearly 5-fold increase in 30-day mortality. The vast majority of patients with MINS were asymptomatic and would have gone undetected without routine postoperative troponin measurement.

Study context

Population
Major general surgery patients aged 45 years or older, 24 centres in 13 countriesof 22,552 noncardiac surgery patients
Participants
4,490 patients
Exposure
MINS vs no MINS
Outcome
30-day all-cause mortality associated with MINS
Follow-up
30 days
Methodological detailsinternational, multicentre, high-sensitivity troponin T (hsTnT) measured during the first 3 postoperative days in all patients
  • International
  • Multicentre
  • hsTnT measured during the first 3 postoperative days in all patients

Main finding

30-day all-cause mortality

Adjusted odds ratio

4.7

95% CI 3.0–7.4

By group

MINS vs No MINS
aOR 4.7 (95% CI 3.0–7.4)

As reported in the abstract

Observational data: associations, not effects.

Further findings

OutcomeMINS, no ischemic featuresMINS, ≥1 clinical ischemic feature
30-day mortality by ischemic features (subgroup)5.4% (95% CI 3.7%–7.7%)10.6% (95% CI 6.7%–15.8%)

Incidence of MINS

Incidence of MINS
16.3% (95% CI, 15.3-17.4%)

MINS without ischemic symptoms

Proportion of MINS without ischemic symptoms
89.9% (95% CI, 87.5-92.0)

Original publication

Myocardial Injury After Noncardiac Surgery in Major General Surgical Patients a Prospective Observational Cohort Study. Ann Surg. Published 17 July 2023. doi:10.1097/sla.0000000000005975

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