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A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
18:11

A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis

Published on: December 28, 2012

A study of heart rate variability and QT dispersion in patients of acute ST elevation myocardial infarction

A Wahab1, M S Zaheer, M U Rabbani

  • 1Centre of Cardiology & Cardiovascular Research, J. N. Medical College, Aligarh Muslim University, India.

Indian Heart Journal
|May 28, 2010
PubMed

Insights

Heart Rate Variability (HRV) and QT dispersion (QTd) are key indicators in acute ST elevation myocardial infarction (STEMI) patients. Lower HRV and higher QTd correlate with adverse outcomes, aiding in future management strategies.

Area of Science:

  • Cardiology
  • Clinical Electrophysiology
  • Critical Care Medicine

Background:

  • Acute ST elevation myocardial infarction (STEMI) poses significant risks for adverse cardiac events.
  • Autonomic dysfunction plays a crucial role in STEMI prognosis.
  • Heart Rate Variability (HRV) and QT dispersion (QTd) are emerging markers of cardiac autonomic regulation.

Purpose of the Study:

  • To investigate the prognostic value of HRV and QTd in patients with acute STEMI.
  • To assess the correlation between HRV, QTd, and patient outcomes.

Main Methods:

  • A cohort of 100 acute myocardial infarction (AMI) patients were evaluated.
  • Electrocardiogram (ECG) and 24-hour Holter monitoring were performed.
  • HRV, QTd, SDNN, and SDANN were calculated and statistically analyzed.

Main Results:

  • Common symptoms included chest pain (88%) and dyspnea (50%).
  • Patients who died showed significantly decreased HRV and increased QTd compared to survivors.
  • A strong negative correlation was observed between HRV and QTd.

Conclusions:

  • HRV and QTd provide valuable prognostic information in STEMI patients.
  • These markers can aid in tailoring management strategies for patients at high risk of adverse outcomes.
Abstract

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