Key result
Admission shock index ≥0.7 linked to ~130% higher 1-year mortality in STEMI, outperforming cardiogenic shock.
Why the study?
Cardiogenic shock is a strong predictor of mortality in STEMI patients, but shock index may be a more sensitive and powerful predictor.
Is shock index more sensitive than cardiogenic shock for predicting mortality in STEMI patients treated with primary PCI?
Population
7,412 consecutive STEMI patients treated with primary PCI
Comparison
Shock index ≥0.7 vs cardiogenic shock at admission
Design
Cohort study
Follow-up
1 year
Authors
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Shock index ≥0.7 may flag additional high-risk STEMI patients beyond cardiogenic shock; leaves open whether routine use improves stratification or outcomes.
Cohort (n=7,412)
No
Is shock index more sensitive than cardiogenic shock for predicting mortality in STEMI patients treated with primary PCI?
Hazard Ratio: 2.3 (95% CI 1.8–2.9)
Shock index ≥0.7 is a more sensitive prognostic predictor for 30-day and 1-year mortality than cardiogenic shock in STEMI patients undergoing primary PCI.
Hemradj et al. (2016) conducted a cohort in ST-elevation myocardial infarction (STEMI) (n=7,412). Shock index ≥0.7 vs. Shock index <0.7 was evaluated on 1-year mortality (HR 2.3, 95% CI 1.8-2.9). An admission shock index ≥0.7 was associated with a significantly increased risk of 1-year mortality (HR 2.3) and proved to be a more sensitive prognostic predictor than cardiogenic shock in STEMI patients treated by primary PCI.
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