Impact of concurrent right ventricular myocardial infarction on outcomes among patients with left ventricular

Huocheng Liao1, Qiuyue Chen1, Lin Liu1

  • 1The Third People Hospital of Huizhou, The Affiliated Hospital of Guangzhou Medical University, Huizhou, Guangdong, China.

Scientific Reports
|February 5, 2020
PubMed

Insights

Right ventricular myocardial infarction (RVMI) in patients with left ventricular myocardial infarction (LVMI) is associated with worse outcomes. RVMI increases the risk of in-hospital mortality and acute heart failure, highlighting the importance of considering RV involvement in STEMI patients.

Area of Science:

  • Cardiology
  • Internal Medicine
  • Clinical Research

Background:

  • Left ventricular myocardial infarction (LVMI) is a common form of heart attack.
  • The impact of concomitant right ventricular myocardial infarction (RVMI) on in-hospital outcomes for LVMI patients is not fully understood.

Purpose of the Study:

  • To compare in-hospital outcomes between patients with acute ST-segment elevation myocardial infarction (STEMI) involving the left ventricle (LVMI) with and without concurrent right ventricle (RVMI).

Main Methods:

  • A cohort of STEMI patients undergoing primary percutaneous coronary intervention (PCI) was divided into LVMI with and without RVMI groups.
  • In-hospital outcomes, demographic data, and clinical markers were compared between the two groups.

Main Results:

  • Patients with RVMI exhibited higher rates of diabetes, dyslipidemia, elevated C-reactive protein, B-type natriuretic peptide, and cardiac troponin-I.
  • RVMI was associated with lower left and right ventricular ejection fractions and higher mean pulmonary artery pressure.
  • Patients with RVMI had significantly higher odds of in-hospital all-cause mortality (4.1% vs 1.0%) and new-onset acute heart failure (3.4% vs 1.0%).
  • After adjustment, LVMI with RVMI remained independently associated with composite adverse outcomes (OR 1.66; 95% CI 1.39-2.04).

Conclusions:

  • Concomitant RVMI in patients with LVMI is associated with increased in-hospital complications, including higher mortality and acute heart failure.
  • Early recognition and management of RVMI in STEMI patients are crucial for improving patient outcomes.

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