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Takotsubo Cardiomyopathy and Non-ST-Segment Elevation Myocardial Infarction: Predictors of Left Ventricular

Andrew Hinojos1, Thomas E Vanhecke2, Susan Enright1

  • 1Department of Internal Medicine, Genesys Regional Medical Center/Ascension Health, Grand Blanc, MI, USA.

Clinical Medicine Insights. Cardiology
|February 17, 2022
PubMed

Insights

Takotsubo (TK) cardiomyopathy and peripheral artery disease (PAD) are independent predictors of reduced left ventricular ejection fraction (LVEF) and elevated B-type natriuretic peptide levels in acute coronary syndrome (ACS) patients.

Area of Science:

  • Cardiology
  • Cardiovascular Research

Background:

  • Acute coronary syndrome (ACS) and Takotsubo (TK) cardiomyopathy share similar initial symptoms, potentially leading to left ventricular (LV) dysfunction and heart failure.
  • Distinguishing between non-ST-segment elevation myocardial infarction (NSTEMI) and TK cardiomyopathy is clinically significant for patient management.

Purpose of the Study:

  • To investigate the independent predictors of reduced left ventricular ejection fraction (LVEF) and elevated B-type natriuretic peptide (BNP) levels in patients presenting with ACS.
  • To compare the characteristics and outcomes of patients with TK cardiomyopathy versus NSTEMI.

Main Methods:

  • Retrospective case-control study involving patients aged 18 years and older who presented with ACS and underwent cardiac catheterization.
  • Analysis of patient data including ejection fraction (EF), presence of TK cardiomyopathy, and peripheral artery disease (PAD).

Main Results:

  • The study included 321 patients in the TK group and 1031 in the NSTEMI group.
  • TK cardiomyopathy was associated with significantly worse LV dysfunction (average EF 44.35% vs. 47.36% in NSTEMI, P < .001).
  • TK (OR 2.373) and PAD (OR 2.053) were identified as significant predictors.

Conclusions:

  • TK cardiomyopathy and PAD are independent predictors of LVEF <35% and elevated BNP levels.
  • These findings aid in identifying high-risk ACS patients who may benefit from closer monitoring and tailored interventions.
Abstract

Keywords:
B-type natriuretic peptide (BNP)Heart failureTK cardiomyopathyejection fractionleft ventricular dysfunctionnon-ST-segment elevation myocardial infarctionperipheral artery diseasestress cardiomyopathy

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