Quinidine is contraindicated in: (DNB June 2011)
Contraindications of Quinidine
Intolerance Heart block
History of embolism AV block
Digitalis toxicity Intraventricular conduction defect
Hypokalemia Myasthenia gravis
Phenytoin or lidocaine is used in digitalis toxicity. Quinidine and procainamide are contraindicated.