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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

[Acute coronary syndrome--ECG-changes without ST-elevation]

Gabriel Christian Forselv1, Harald Vik-Mo

  • 1Det medisinske fakultet, Norges teknisk-naturvitenskapelige universitet, Trondheim.

Tidsskrift for Den Norske Laegeforening : Tidsskrift for Praktisk Medicin, Ny Raekke
|September 11, 2007
PubMed

Insights

A negative or biphasic T-wave on ECG in leads V2-V3 can reliably detect proximal left anterior descending artery stenosis in acute coronary syndrome patients, aiding urgent intervention decisions.

Area of Science:

  • Cardiology
  • Diagnostic Imaging
  • Internal Medicine

Context:

  • Acute coronary syndrome without ST-segment elevation (NSTEMI) carries a significant risk of myocardial infarction and death.
  • Prognosis in NSTEMI is influenced by the specific coronary artery affected.
  • Accurate identification of culprit artery lesions is crucial for timely and effective treatment.

Purpose:

  • To prospectively evaluate the diagnostic value of resting electrocardiogram (ECG) for detecting proximal left anterior descending (LAD) artery stenosis.
  • To assess the utility of specific ECG findings (T-wave abnormalities in V2-V3) in identifying LAD stenosis in NSTEMI patients.
  • To determine if ECG findings can serve as a selection criterion for urgent coronary angiography.

Summary:

  • A negative or biphasic T-wave in ECG leads V2-V3 was observed in 22% of NSTEMI patients.
  • This specific T-wave pattern was significantly more prevalent (76% vs. 11%, p < 0.01) in patients with confirmed ischemia-related proximal LAD stenosis.
  • Troponin T levels and clinical risk scores did not effectively identify patients with proximal LAD stenosis, highlighting the diagnostic value of ECG findings.

Impact:

  • A negative or biphasic T-wave in leads V2-V3 is a reliable, non-invasive marker for proximal LAD stenosis in NSTEMI.
  • This ECG finding can be integrated into clinical practice to identify patients who would benefit from urgent coronary angiography and intervention.
  • Improved patient selection for revascularization can lead to better outcomes and reduced mortality in NSTEMI.
Abstract

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