Key result
Coronary bypass surgery increased the maximum tolerable heart rate by 23 beats/min and reduced or eliminated pacing-induced chest pain in 8 of 9 patients.
Why the study?
Does coronary bypass surgery improve anaerobic myocardial lactate metabolism and chest pain during pacing-induced angina pectoris?
Population
9 patients with pacing-induced angina pectoris undergoing coronary bypass surgery
Comparison
Coronary bypass surgery vs Pre-operative baseline (within-subject comparison)
Design
Cohort
Follow-up
8-12 months
Authors
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May improve pacing tolerance in refractory angina; leaves open metabolic effects in larger randomized cohorts.
Observational (n=9)
Does coronary bypass surgery improve anaerobic myocardial lactate metabolism and chest pain during pacing-induced angina pectoris?
Improvement in chest pain limited cardiac performance after coronary bypass surgery correlates well with improved myocardial aerobic metabolism.
Kaijser et al. (1991) conducted an observational in Pacing-induced angina pectoris (n=9). Coronary bypass surgery vs. Pre-operative state was evaluated on Myocardial lactate metabolism and chest pain during pacing-induced angina. Coronary bypass surgery increased the maximum tolerable heart rate by 23 beats/min and reduced or eliminated pacing-induced chest pain in 8 of 9 patients.
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