Key result
Pharmacologic stress induced substantial repolarization changes in the magnetocardiogram (correlation 0.3 to 0.5) compared to the electrocardiogram (correlation 0.7 to 1.0).
Why the study?
Does pharmacologic stress induce different repolarization changes on magnetocardiography compared to 32-lead ECG in healthy subjects?
Population
3 healthy male subjects
Comparison
Pharmacologic stress evaluated with 37-sensor… vs Recordings at rest
Design
Other
Authors
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May caution against misinterpreting stress-induced MCG repolarization shifts as pathologic; leaves open its diagnostic role versus ECG.
Does pharmacologic stress induce different repolarization changes on magnetocardiography compared to 32-lead ECG in healthy subjects?
Magnetocardiography detects substantial, nonpathologic repolarization changes during pharmacologic stress that are not apparent on standard ECG, likely reflecting changes in vortex currents.
Brockmeier et al. (1997) studied Healthy (n=3). Pharmacologic stress vs. Rest was evaluated on Correlation coefficients between pairs of rest and stress MCG and ECG distributions at the beginning of T wave. Pharmacologic stress induced substantial repolarization changes in the magnetocardiogram (correlation 0.3 to 0.5) compared to the electrocardiogram (correlation 0.7 to 1.0).
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