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Post-Myocardial Infarction Heart Failure in Closed-chest Coronary Occlusion/Reperfusion Model in Göttingen Minipigs and Landrace Pigs
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Relationship between peripheral monocytosis and nonrecovery of left ventricular function in patients with left

Young Joon Hong1, Myung Ho Jeong, Youngkeun Ahn

  • 1The Heart Center of Chonnam National University Hospital, Chonnam National University Research Institute of Medical Sciences, Gwangju, Korea.

Circulation Journal : Official Journal of the Japanese Circulation Society
|July 27, 2007
PubMed

Insights

Older age and high monocyte counts predict poor left ventricular function recovery after heart attack. These factors are crucial for understanding chronic ischemic heart failure post-treatment.

Area of Science:

  • Cardiology
  • Internal Medicine
  • Biomedical Research

Background:

  • Ischemic heart failure is a leading cause of mortality post-acute myocardial infarction (AMI).
  • Factors influencing left ventricular function (LVF) recovery after AMI remain unclear.
  • Left ventricular dysfunction (LVEF < 40%) post-AMI requires identification of recovery predictors.

Purpose of the Study:

  • Identify predictors of nonrecovery of LVF in patients with LV dysfunction post-AMI.
  • Investigate the role of baseline characteristics in predicting LVF recovery after primary PCI.
  • Determine independent predictors for chronic ischemic heart failure development.

Main Methods:

  • Retrospective analysis of 108 patients with LV dysfunction post-AMI and successful primary PCI.
  • Patients divided into LVF recovery (n=64) and non-recovery (n=44) groups.
  • Echocardiographic LVEF measured at baseline and 8±4 months post-PCI; correlation and multivariate analyses performed.

Main Results:

  • Patients without LVF recovery were significantly older and had higher baseline monocyte, creatine kinase, and troponin I levels.
  • Baseline peak monocyte count, creatine kinase, and troponin I levels correlated with reduced LVEF improvement.
  • Multivariate analysis identified older age and higher baseline peak monocyte count as independent predictors of nonrecovery of LVF.

Conclusions:

  • Peripheral monocytosis is associated with nonrecovery of LVF in patients with LV dysfunction post-AMI.
  • Monocytes may play a significant role in infarct expansion and chronic ischemic heart failure development.
  • These findings highlight potential therapeutic targets for improving outcomes after reperfusion therapy.
Abstract

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