Key result
Continuous ECG during modified double two-step exercise testing establishes criteria for coronary insufficiency.
Why the study?
A method for recording electrocardiograms during a double two-step exercise test was developed to define criteria for abnormal responses indicating coronary insufficiency.
Population
32 normal subjects and 54 patients
Comparison
Electrocardiographic changes during exercise test vs normal responses
Design
Observational study describing ECG changes during modified double two-step exercise test
Authors
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May inform ECG criteria during exercise testing; leaves open validation in prospective cohorts before clinical adoption.
Observational (n=86)
The modified double two-step exercise test with continuous ECG recording provides defined criteria for detecting coronary insufficiency.
Yu et al. (1952) conducted an observational in Coronary insufficiency (n=86). Modified double two-step exercise test with continuous ECG recording was evaluated on Electrocardiographic changes (heart rate, S-T segment, T wave, Q-T interval, premature beats) and criteria for abnormal response indicating coronary insufficiency. A modified double two-step exercise test with continuous ECG recording was used to define criteria for an abnormal response indicating coronary insufficiency in 86 subjects.
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