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[Left Bundle Branch Block in Unstable Angina. Mortality and Rate of Myocardial Infarction]

V M Baev1,2, E V Lantsova1,2, D B Kozlov1,2

  • 1E.A. Wagners Perm State Medical University, Perm, Russia.

Kardiologiia
|March 15, 2017
PubMed

Insights

Unstable angina patients with left bundle branch block face higher risks of death and myocardial infarction. This combination also reduced in-hospital survival time by one day.

Area of Science:

  • Cardiology
  • Internal Medicine

Background:

  • Unstable angina (UA) is a critical condition.
  • Left bundle branch block (LBBB) can complicate cardiac diagnoses.
  • The combined impact of UA and LBBB on patient outcomes requires further investigation.

Purpose of the Study:

  • To investigate mortality and adverse outcomes in patients presenting with unstable angina.
  • To specifically assess the influence of concomitant left bundle branch block on these outcomes.

Main Methods:

  • A cohort study including 366 patients with unstable angina.
  • Patients were categorized into two groups: those with LBBB (n=56) and without LBBB (n=310).
  • A 14-day observation period was used to track adverse events including death, myocardial infarction, cardiogenic shock, and stroke.

Main Results:

  • The presence of LBBB in UA patients was associated with a 3.4-fold increased risk of death.
  • A 2.6-fold increased risk of myocardial infarction was observed in UA patients with LBBB.
  • In-hospital survival was reduced by an average of one day for patients with both UA and LBBB.

Conclusions:

  • The combination of unstable angina and left bundle branch block significantly elevates the risk of mortality and myocardial infarction.
  • Clinicians should be aware of the heightened adverse event profile in UA patients with LBBB.
  • Early recognition and management strategies may be crucial for improving outcomes in this high-risk group.
Abstract

Keywords:
adverse outcomesleft bundle branch blockunstable angina

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