Key result
A patient with acute myocardial infarction exhibited alternating atrial and ventricular tachycardia, highlighting that intra-atrial electrocardiography may be necessary for accurate diagnosis.
Case Report (n=1)
Intra-atrial electrocardiography can be crucial for accurately diagnosing alternating atrial and ventricular tachycardias, especially when aberrant ventricular conduction mimics ventricular tachycardia.
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May support intra-atrial ECG for ambiguous tachycardias in AMI; leaves open broader validation.
A patient with alternating atrial and ventricular tachycardia is described. He had an acute myocardial infarction and was taking digitalis. The atrial tachycardia, which was occasionally associated with aberrant ventricular conduction, was able to interrupt the ventricular tachycardia though the reverse was not true, suggesting a retrograde conduction block. This patient shows that atrial and ventricular arrhythmias can alternate and, since tachycardia with aberrant ventricular conduction can closely resemble ventricular tachycardia, intra-atrial electrocardiography may be necessary to establish an accurate diagnosis.
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Jordan et al. (1979) conducted a case report in Alternating atrial and ventricular tachycardia (n=1). A patient with acute myocardial infarction exhibited alternating atrial and ventricular tachycardia, highlighting that intra-atrial electrocardiography may be necessary for accurate diagnosis.
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