This ECG is from a middle-aged woman who presented with syncope and hypotension.
This ECG shows sinus tachycardia with inferior ST elevation and reciprocal ST depression in aVL. Also ST elevation in V1 and ST depression in V2-4. The most likely cause was acute inferoposterior MI due to proximal RCA occlusion.
This ECG is from a woman in her 60s who presented from a nursing home with altered mental status, hypotension, hypoxia and bradycardia. This was the repeat ECG after placement of a transvenous pacemaker.
This ECG shows a very wide ventricular paced rhythm with widespread excessive discordant ST elevation. The cause was hyperkalemia.