THe ECG in the figure below:
is suggestive of:
Hyperkalemia. This shows a sinus rhythm with first-degree AV block, generalized broadening of the QRS (with a right bundle branch block-like pattern), and symmetric broadening of the T wave. This is hyperkalemia. Potassium at the time was 6.2 mEq/L.
The ECG in the figure below:
Anteroseptal infarct of uncertain age. Here is a sinus bradycardia with a sinus arrhythmia. There is terminally a symmetric T-wave inversion in leads V2 and V3 plus a qrS pattern in V3 . This is an anteroseptal infarct of uncertain age. Also there are lateral T-wave changes that are not specific.
ST- and/or T-wave changes suggesting acute pericarditis. Rhythm is sinus with a first-degree AV block. There was a wide complex without septal Q waves in leads I and V6 (a left bundle branch block pattern) and left axis deviation. ST and T waves are “discordant” in the anterolateral leads (and also generally). There is also PR-segment elevation in lead aVR. This could be anterior “injury,” but more suggests acute pericarditis.
Acute high lateral infarct. There is a sinus rhythm with ST-segment elevation in lead aVL and reciprocal changes in the inferior and lateral leads. This is an acute high lateral infarct.
shows:
Nonspecific ST- and/or T-wave changes + Right bundle branch block (RBBB), incomplete + AV block, complete + Sinus tachycardia . A sinus rhythm with AV dissociation (complete heart block) and junctional escape. V1 shows an incomplete right bundle branch block pattern. T waves are not entirely normal in V3 .
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