CLINICAL ECG

Multifocal atrial tachycardia

MSP221 recording · 01

DOCUMENTED HISTORY

Clinical history not documented in this image source.

De-identified clinical ECG tracing — Open image ↗

Original waveform retained; quiz cropping only removes off-tracing interpretation or a row containing an answer label. Some sources are rhythm strips rather than a full 12-lead ECG.

Look for

Irregular rhythm.
Multiple P-wave shapes visible in lead II.

Where to look. Compare P waves in the lead-II strip: different shapes and irregular R–R intervals.

Discrete P waves remain visible with an isoelectric baseline between them, helping distinguish this rhythm from atrial fibrillation.

The source diagnosis is retained; no additional clinical cause is inferred.

References & provenance

Multifocal Atrial Tachycardia — LITFL, Burns & Buttner

Multifocal atrial tachycardia

Jer5150; image credit Jason E. Roediger, CCT, CRAT. Multifocal atrial tachycardia. https://commons.wikimedia.org/wiki/File:Multifocal_atrial_tachycardia_-_MAT.png. CC BY-SA 3.0. Adaptation: lossless metadata removal/encoding; quiz crop removes off-tracing labels/interpretive panels where applicable. Derivative image retains the same license. CC BY-SA 3.0

Adaptation: cropping and removal of headers/annotations outside the tracing where applicable; metadata removed. Waveforms have not been redrawn.

Compared with the published source; no independent clinical validation is claimed.

Original annotations & limitations

Multifocal atrial tachycardia

Original source labels retained. Question wording limited to visible findings; no independent clinical validation claimed.