<prompt> A 68-year-old male admitted to ICU for acute exacerbation of COPD develops a sudden onset of palpations. The following ECG changes are seen. What is the most likely diagnosis?AFVentricular tachycardiaAMIMAT  <response>: Ans. D MATRef. Harrisons Principle of Internal Medicine 20th Ed; Page No-1733 and 1745ECG shows narrow complex tachycardia with irregular rhythm.Since P waves are seen it rules out AEDifferent morphologies of P waves 3 in lead II rules out Sinus arrhythmia.All the above said features confirm MAT.Also absence of chest pain significant ST elevations rules out AMI.Multifocal Atrial Tachycardia MATECG FindingsHeart rate typically between 100-150 bpm.Irregularly irregular rhythm with varying PP, PR and RR intervals.At least 3 distinct P-wave morphologies in the same lead.Isoelectric baseline between P-waves i.e. no flutter waves. 