<prompt> A patient presents with recent onset of breathlessness. An ECG is taken shown below. What is the diagnosis?Atrial fibrillation AFParoxysmal supraventricular tachycardia PSVTAcute myocardial infarction AMIMultifocal atrial tachycardia MAT  <response>: Ans. D. Multifocal Atrial Tachycardia MAT ECG shows narrow complex tachycardia with irregular rhythm. Since P waves are seen it rules out AF. Different morphologies of P waves 3 in lead II rules out sinus arrhythmia. All the above said features confirm MAT. Also, absence of chest pain and significant ST elevations rules out AMI.Multifocal atrial tachycardia MATECG findings: Heart rate typically between 100and150bpm. Irregularly irregular rhythm with varying FP,PR, and RR intervals. At least 3 distinct P-wave morphologies in the same lead.Distinct P-wave morphologies Isoelectric baseline between P waves i.e., no flutter waves. 