A patient in regular rhythm presents with absent P waves on ECG. Leads II, III and AVF reveal a Saw-Tooth Pattern. Which of the following is the most likely diagnosis:
Answer is C (Atrial Flutter with Fixed Block) The absence of any discernible P waves on ECG, together with the presence of Saw Tooth Flutter waves in inferior leads (Leads II, III and AVF) strongly suggests a diagnosis of Atrial Flutter. The presence of a regular rhyti,,o suggests a Fixed Block . Findings/Features Diagnosis Irregular Rhythm with no discernible P wave (Chaotic base line with fibrillary f waves) Atrial Fibrillation Irregular rhythm with no discernible P wave (Saw tooth ,Ilutter waves especially in inferior leads and VI) Atrial Flutter with variable block Regular rhythm with no discernible P waves (Saw tooth flutter waves especially in inferior leads and V1) Atrial Flutter with fixed block Irregular Rhythm with multiple P wave morphologies (P waves Discernible) and Varying PR intervals Multifocal Atrial Tachycardia
Atrial Fibrillation
Atrial Flutter with Variable Block
Atrial Flutter with Fixed Block
Multifocal Atrial Tachcardia
Atrial Flutter with Fixed Block