Key result
Atrioventricular block in anterior STEMI was a predictor of death (52.9% vs 44.7%; OR 0.111; 95% CI 0.034-0.366; P<0.001), while in inferior STEMI it predicted new-onset atrial fibrillation.
Why the study?
Atrioventricular block occurs in STEMI more frequently in inferior leads, but whether atrioventricular block and STEMI localization carry different prognostic implications remained uncertain.
Does the localization of STEMI (anterior vs inferior) affect the prognosis and clinical outcomes of patients presenting with atrioventricular block?
Population
462 patients with AVB out of 32157 STEMI patients in Portugal
Comparison
Anterior STEMI with AVB vs inferior STEMI with AVB
Design
Multicenter retrospective registry study
Authors
Loading...
AV block may signal higher mortality risk in anterior STEMI; leaves open need for prospective validation before guiding care.
Cohort (n=462)
Yes
Does the localization of STEMI (anterior vs inferior) affect the prognosis and clinical outcomes of patients presenting with atrioventricular block?
Odds Ratio: 0.111 (95% CI 0.034–0.366)
Absolute Event Rate: 52.9% vs 44.7%
p-value: p=<0.001
In patients with STEMI complicated by atrioventricular block, anterior localization is associated with higher mortality and cardiogenic shock, whereas inferior localization predicts new-onset atrial fibrillation.
Santos et al. (2021) conducted a cohort in ST-elevation myocardial infarction with atrioventricular block (n=462). Anterior STEMI with atrioventricular block vs. Inferior STEMI with atrioventricular block was evaluated on Death (OR 0.111, 95% CI 0.034-0.366, p=<0.001). Atrioventricular block in anterior STEMI was a predictor of death (52.9% vs 44.7%; OR 0.111; 95% CI 0.034-0.366; P<0.001), while in inferior STEMI it predicted new-onset atrial fibrillation.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: