I know this is supposed to make a point but as an ECG...

This is just Atrial fibrillation self terminating after a normal normal heartbeat.

Rate Not enough data

Rhythm Not enough data

P waves - F waves present prior to QRS complex

PRI - NA

QRS Narrow, no Path Q waves. Appears normal

Axis not enough data

T waves Absent? possibly coming up

ST Elevation. Nil ST segment changes, nil inschemai signs. No other leads for reciprocal changes.