Key result
The number of high-frequency peaks within the QRS complex significantly increased from day 7 to day 28 post-myocardial infarction, suggesting changes in the myocardial conduction process.
Observational (n=20)
No
Mean Difference: 0.6
Absolute Event Rate: 4.5% vs 3.9%
p-value: p=0.002
In patients with acute myocardial infarction, the number of intra-QRS high-frequency peak potentials increases from the acute to subacute phase, suggesting changes in the myocardial excitation propagation process.
Intra-QRS high-frequency peaks rise post-MI; hypothesis-generating for conduction changes and should not yet change practice.
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Katsuhiko Tsuchiya (1999) conducted an observational in Acute myocardial infarction (n=20). Time post-myocardial infarction (28 days) vs. 7 days post-myocardial infarction was evaluated on Number of high-frequency peaks in the QRS complex (X lead) (MD 0.6, p=0.002). The number of high-frequency peaks within the QRS complex significantly increased from day 7 to day 28 post-myocardial infarction, suggesting changes in the myocardial conduction process.
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