Key result
Right bundle branch block was associated with increased 30-day all-cause mortality in patients with cardiogenic shock compared to no bundle branch block (HR 1.807; 95% CI 1.107-2.947; p=0.018).
Why the study?
While bundle branch block influences prognosis in heart failure, the prognostic impact of right and left bundle branch block in cardiogenic shock compared with no bundle branch block required investigation.
Does the presence of RBBB or LBBB increase 30-day all-cause mortality in adult patients with cardiogenic shock?
Cohort (n=248)
No
Does the presence of RBBB or LBBB increase 30-day all-cause mortality in adult patients with cardiogenic shock?
In patients with cardiogenic shock, the presence of right bundle branch block is an independent predictor of increased 30-day all-cause mortality, whereas left bundle branch block is not.
RBBB may identify higher-risk cardiogenic shock patients; leaves open whether it warrants targeted interventions or prospective validation.
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Rusnak et al. (2024) conducted a cohort in Cardiogenic shock (n=248). Right bundle branch block (RBBB) vs. No bundle branch block (BBB) was evaluated on 30-day all-cause mortality (HR 1.807, 95% CI 1.107-2.947, p=0.018). Right bundle branch block was associated with increased 30-day all-cause mortality in patients with cardiogenic shock compared to no bundle branch block (HR 1.807; 95% CI 1.107-2.947; p=0.018).
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