Quinidine exes its action on the hea by
It is d-isomer quinidine is used as an antiarrhythmic drug. Quinidine blocks myocardial Na channels. Class 1a group of drugs- quinidine, procainamide, disopyramide Ib: Lidocaine, phenytoin Ic-encainide, flecainide Ref: KD tripathi 8th ed.
Ca2+ channel blockade
Na+ channel blockade
K+ channel opening
Cl- channel opening
Cardiovascular system