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Ventricular tachycardia during routine treadmill testing. Risk and prognosis
J C Yang1, R C Wesley, V F Froelicher
1Department of Cardiology, Long Beach (Calif) Veterans Affairs Medical Center 90822.
Archives of Internal Medicine
|February 11, 1991
Summary
Exercise-induced ventricular tachycardia during exercise testing is rare and does not increase testing risks. Nonsustained ventricular tachycardia is not an independent predictor of poor prognosis in patients undergoing exercise tests.
Area of Science:
- Cardiology
- Clinical Exercise Physiology
Background:
- Exercise-induced ventricular tachycardia (EIVT) is often considered a risk during exercise testing.
- The prognostic implications of EIVT remain understudied.
Purpose of the Study:
- To investigate the prevalence, safety, and prognostic significance of EIVT during routine clinical exercise testing.
Main Methods:
- Retrospective review of 3351 patients undergoing exercise testing.
- Identification of 55 patients with EIVT (nonsustained or sustained).
- Follow-up analysis of mortality and complications.
Main Results:
- EIVT prevalence was 1.5% and not associated with testing complications.
- Total mortality in the EIVT group (3.6%) was not significantly different from the overall population (5.1%).
- Nonsustained EIVT was not an independent marker of poor prognosis.
Conclusions:
- EIVT during clinical exercise testing is uncommon and safe.
- Nonsustained EIVT does not independently predict a poor long-term prognosis.