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Related Experiment Videos

ST segment deviation during myocardial ischemia: are there gender differences?

M M Pelter1, M G Adams, B J Drew

  • 1Department of Physiological Nursing, School of Nursing, University of California, San Francisco, USA.

Progress in Cardiovascular Nursing
|January 1, 1996
PubMed
Summary
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Men and women show similar ST segment deviation during percutaneous transluminal coronary angioplasty (PTCA) balloon inflation when matched for the specific coronary vessel. This suggests ST segment monitoring for myocardial ischemia is equally sensitive in both genders.

Area of Science:

  • Cardiology
  • Medical Imaging
  • Physiology

Background:

  • Previous studies suggest women exhibit greater ST segment shifts than men during percutaneous transluminal coronary angioplasty (PTCA).
  • A direct comparison of ST deviation between genders during occlusion of the identical coronary vessel was lacking.

Purpose of the Study:

  • To investigate potential gender differences in ST segment deviation during coronary artery balloon occlusion in PTCA.
  • To determine if ST deviation patterns are comparable between men and women when the same coronary vessel is occluded.

Main Methods:

  • Conducted 12-lead electrocardiographic (ECG) recordings in 45 patients (25 men, 20 women) undergoing PTCA.
  • Calculated a total ST score by summing absolute deviations across all 12 leads.
  • Included patients with single-vessel coronary artery lesions in the proximal artery without collateral circulation.

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Main Results:

  • No significant differences were observed between men and women regarding age, left ventricular hypertrophy, ejection fraction, or Norris Coronary Prognostic Index.
  • Vessel-to-vessel comparison revealed no gender-based differences in mean ST segment deviation during balloon inflation.

Conclusions:

  • Men and women demonstrate comparable ST deviation patterns during coronary occlusion with PTCA balloon inflation when the affected vessel is standardized.
  • Continuous ST segment monitoring for detecting myocardial ischemia related to coronary occlusion should possess similar sensitivity in both men and women.