Polarcardiographic (triaxicardiometric) study on the effect of isosorbide dinitrate on exercise-induced myocardial ischemia

Z. Antaldczy, I. Freda, L. Regos, G. Kozmann

Research output: Contribution to journalArticle


30 patients suffering from stable angina pectoris were studied by triaxicardiometric (polarcardiographic) method. Triaxicardiometry including the X, Y, Z Frank leads, azimuth (H°), elevation (V°) angle derivations and spatial magnitude (M) tracings were taken at rest and after submaximal bicycle ergometer exercise. After receiving 30 mg/day isosorbide dinitrate for a minimum of 5 days the whole procedure was repeated, stored by an analogue tape recorder and evaluated by a TPA/i computer. It has been stated that the method of triaxicardiometry has an excess sensitivity on the demonstration of ischemic alteration of anterior and posterobasal left ventricular wall compared to the traditional X, Y, Z leads. According to the pre- and post-exercise bicycle ergometer testing estimated by triaxicardiometry, isosorbide dinitrate caused a significant reduction of subendocardial myocardial ischemia.

Original languageEnglish
Pages (from-to)147-152
Number of pages6
JournalCardiology (Switzerland)
Publication statusPublished - Jan 1 1981


  • Exercise testing
  • Myocardial ischemia
  • Nitrates
  • Polarcardiography
  • Triaxicardiometry

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Pharmacology (medical)

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