Isolated Atrial Infarction
Report:
Sinus rhythm 103/min
PR segment elevation c/w atrial infarction
Comment:
In leads 2, aVF, V5-6 there is definite PR segment elevation indicating atrial infarction or ischæmia. As in the case of right ventricle, thin-walled atria have ischæmia rather than infarctions as seen in the left ventricular myocardium. The terminology remains because of analogous segment elevations.
Fig 49.x
The boy had an undiagnosed febrile illness suggestive of Kawasakiâs disease41. It resolved spontaneously, without complications. An echocardiogram was normal.
Below (Fig 48a), three days later, the PR segments have normalised, but there is unexplained sinus bradycardia (for a 9 year old) 53/min.
48a. Sinus bradycardia may reflect atrial injury seen in Fig 48.
49. 58 year old man with unstable angina.
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