Case Report (n=1)
No
Speckle tracking echocardiography can be a valuable tool for diagnosing acute myocardial infarction in patients with pre-excitation syndrome, where baseline ECG abnormalities may mask typical ischemic changes.
Speckle tracking may aid MI diagnosis when ECG is masked by pre-excitation; leaves open routine adoption without prospective validation.
A male in his mid 50s, chronic smoker and hypertensive for 10 years presented with history suggestive of typical angina, electrocardiographic evidence of pre-excitation and serial elevation of cardiac biomarkers. Serial electrocardiograms showed subtle changes (axis shift, horizontal ST-segment changes) that could be presumptive of an anterior wall myocardial infarction. Speckle tracking echocardiography revealed territorial reduction of longitudinal strain corresponding to the left anterior descending artery with coronary angiography corroborating the same and underwent successful revascularisation. Exercise stress testing showed abrupt and complete disappearance of delta wave and normalisation of PR interval which indicates that the patient has low risk of developing malignant arrhythmias and sudden cardiac death.
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Rajendran et al. (2022) conducted a case report in Acute myocardial infarction with pre-excitation syndrome (n=1). Primary angioplasty and speckle tracking echocardiography was evaluated on Successful revascularization and diagnosis.
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