Why the study?
Does manual measurement of QT dispersion aid in diagnosing acute myocardial infarction in emergency department patients with chest pain and nondiagnostic ECGs?
Population
160 emergency department patients with chest pain and nondiagnostic initial ECGs admitted to a coronary…
Comparison
Manual measurement of QT dispersion on initial… vs Controls with musculoskeletal pain
Design
Case-control
Authors
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QT dispersion >50 ms associated with AMI in nondiagnostic ECGs; hypothesis-generating and requires prospective validation before clinical use.
Does manual measurement of QT dispersion aid in diagnosing acute myocardial infarction in emergency department patients with chest pain and nondiagnostic ECGs?
Manual measurement of QT dispersion on initial ECG may serve as a useful diagnostic adjunct for identifying acute myocardial infarction in patients presenting with chest pain and nondiagnostic ECGs.
Calder et al. (2002) studied this question.
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