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Ventricular extrasystolic arrhythmias in exercise testing. II. Haemodynamic correlations
A Tavernarakis1, N Michelakakis, G Ifantis
1Department of Cardiology, NIMTS Hospital, Athens, Greece.
European Heart Journal
|August 1, 1987
Summary
Exercise testing (ET) in coronary heart disease patients did not reveal a link between left ventricular (LV) dyssynergy and ventricular arrhythmia (VA). Functional LV status and collateral circulation showed no significant differences between groups with and without VA during ET.
Area of Science:
- Cardiology
- Cardiac Electrophysiology
- Clinical Exercise Physiology
Background:
- Exercise testing (ET) is utilized to assess myocardial arrhythmogenic potential in coronary heart disease (CHD) patients.
- Left ventricular (LV) dyssynergy has been hypothesized to increase the risk of ventricular arrhythmia (VA) during ET in CHD patients.
Purpose of the Study:
- To investigate the relationship between LV functional status and the occurrence of VA during ET in patients with coronary heart disease.
- To compare LV functional parameters and collateral circulation in CHD patients who develop VA during ET versus those who do not.
Main Methods:
- Retrospective analysis of 25 coronary patients with VA during ET (Group A) and 87 patients without VA during ET (Group B).
- Assessment of left ventricular (LV) functional status, including end-diastolic pressure and ejection fraction.
- Evaluation of the extent of LV dyssynergy and collateral circulation development.
Main Results:
- No statistically significant differences were observed between Group A and Group B in end-diastolic pressure, ejection fraction, or the extent of LV dyssynergy.
- The extent of collateral circulation development also showed no significant difference between the two groups.
Conclusions:
- Left ventricular (LV) dyssynergy does not appear to be a significant predictor of ventricular arrhythmia (VA) during exercise testing in patients with coronary heart disease.
- Functional assessment of the LV and collateral circulation do not differentiate between coronary patients who experience VA during ET and those who do not.
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