Natural history and evaluation of Q waves during acute myocardial infarction.
Population
45 patients with uncomplicated acute anterior myocardial infarction
Design
Cohort
Follow-up
4 days
Authors
Discussion
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Member takes
Implication
Rapid Q-wave development in anterior MI may refine early ECG interpretation; hypothesis-generating for 2-hour ST area predicting final infarct size.
Structured PICO
P
Population
45 patients with uncomplicated acute anterior myocardial infarction
I
Intervention
Serial 72 point praecordial electrocardiographic mapping and MB CK measurements
O
Outcome
Serial changes in Q waves and ST segments and relation to MB CK release curvessurrogate
In uncomplicated acute anterior MI, Q wave development begins within 2 hours and completes by 12 hours, with early ST elevation area predicting the final Q wave area.
Cite This Study
Selwyn et al. (1978) studied this question.