By inactivating the sodium channel, hyperkalemia can cause ST-segment elevation in V1-2, ... There is a P wave in front of every QRS complex indicating the rhythm is sinus rhythm, ...

Normal sinus rhythm ST changes consistent with ischemia - specifically, occlusion of the left main coronary artery This ECG shows dramatic ST segment depression that is down-sloping — consistent ...

Normal sinus rhythm; ST changes consistent with ischemia ... This is ST segment elevation in lead aVR greater than the ST elevation in lead V1 along with ST depression in the precordial leads.

Disturbances of cardiac rhythm after ST-segment elevation myocardial infarction Paul Dorian , Peter Bogaty , Christopher E. Buller , Blair J. O'Neill , Paul W. Armstrong CMAJ Oct 2004, 171 (9) ...

This is a normal sinus rhythm. ... There is slight J point and ST elevation in leads V2-V4 (↓), consistent with early repolarization that is probably due to LVH.

Patients with ST-segment elevation had a lower conversion rate than did those without elevation (48 percent vs. 76 percent) and were less likely to remain in sinus rhythm (35 percent vs. 59 percent).