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Step 3 USMLE
| Question | Answer |
|---|---|
| Warfarin dose after starting Amiodarone, Azole,Metronidazole,Quinolones and Acetaminophen | Decrease the dose |
| Warfarin dose after starting Rifampin, Phenytoin,SJW, green leafy vegetables and oral contraceptives | Increase the dose |
| Chronic hypertension or cocaine use + chest pain + variation in the SBP >20 + new neurologic symptoms | CTA or TTE trans esophagus for acute aortic dissection |
| Cocaine use + Tachy + HTN and chest pain | First tx : Benzo + nitroglycerin and avoid BBlocker Can use phentolamine for HTN |
| MAT (persistent multifocal atrial tachycardia) | EKG: irregular rhythm with rapid rate and at least 3 different morphological P waves |
| MAT ( multifocal atrial tachycardia) TX | Treat underlying conditions: COPD electrolytes disturbance or sepsis |