ANTIARRHYTHMIC DRUGS
TOP 10 MCQ
1. In ECG the P wave corresponds to the following event [GPAT-2023 SHIFT-I]
(a) Atrial depolarization
(b) Ventricular depolarization
(c) Atrial repolarization
(d) Ventricular repolarization
2. Which of the following is WRONGLY matched combination of anti-arrhythmic drugs and their class [GPAT-2021]
(a) Lidocaine – IB
(b) Disopyramide – II
(c) Diltiazem – IV
(d) Amiodarone – III
3. Identify antiarrhythmic drug that increases duration of QT wave and decreases the sinus rate, whereas it has no effect on QRS complex [GPAT-2020]
(a) Lidocaine
(b) Amiodarone
(c) Verapamil
(d) Quinidine
4. All of the following mechanisms of action correctly match a drug EXCEPT [GPAT-2016]
(a) Quinidine: Blocks sodium channels
(b) Bretylium: Blocks potassium channels
(c) Verapamil: Blocks calcium channels
(d) Procainamide: Blocks potassium channels
5. This drug is a Class IC antiarrhythmic drug [GPAT-2015]
(a) Flecainide
(b) Sotalol
(c) Lidocaine
(d) Verapamil
6. All of the following are common side effects of quinidine administration EXCEPT [GPAT-2014]
(a) Diarrhoea
(b) Nausea and vomiting
(c) Dry mouth
(d) Tinnitus
7. Which of the following drugs can cause Torsade de pointes [GPAT-2013]
(a) Quinidine
(b) Lignocaine
(c) Esmolol
(d) Flecainide
8. The pacemaker potential is due to [GPAT-2013]
(a) Fast Na⁺ channel
(b) Decrease in K⁺ permeability
(c) Slow Ca²⁺ channel
(d) Rapid repolarization
9. Which one of the following anti-arrhythmic drugs acts by inhibiting potassium, sodium and calcium channels [GPAT-2012]
(a) Quinidine
(b) Lignocaine
(c) Amiodarone
(d) Flecainide
10. Digitalis toxicity is enhanced by co-administration of [GPAT-2010]
(a) Potassium
(b) Quinidine
(c) Diuretics
(d) Antacids
ANSWER KEY
| 1-a | 2-b | 3-b | 4-b | 5-a | 6-c | 7-a | 8-b | 9-c | 10-b |
|
|
|
