Antiarrhythmic

Question 1

What dis??
Abnormal electric current in the heart

Answer 1

Cardiac arrhythmias

Question 2

What profile of drug?
(a) Blockade of Na or K channels
(b) Raise the potential threshold
(c) Block beta receptor stimuli
(d) Block calcium channels

Answer 2

antiarrhythmic

Question 3

What Class of Antiarrhythmic.
Depresses myocardial excitability to electrical stimuli thus decreasing the pulse rate. Lidocaine (Xylocaine), raises the threshold in the ventricular myocardium. Some arrhythmias have too much stimuli and lidocaine will depress the threshold of the muscle

Class 1
Class 2
Class 3
Class 4

Answer 3

Class 1

Question 4

What Class of Antiarrhythmic.
Verapamil blocks calcium channels which are critical in the production of muscle contraction and electrical conduction

Class 1
Class 2
Class 3
Class 4

Answer 4

Class 4

Question 5

What Class of Antiarrhythmic.
Beta blockers block stimulation of the beta receptors of the heart. Adrenergic neurohormones stimulate the beta receptors and increase the heart rate.

Class 1
Class 2
Class 3
Class 4

Answer 5

Class 2

Question 6

What Class of Antiarrhythmic
Amiodarone blocks potassium channels in the heart. This is used for ventricular dysrhythmias and atrial fibrillation.

Class 1
Class 2
Class 3
Class 4

Answer 6

Class 3

Question 7

Antiarrhythmics are used to treat
________
________
________
________
________

Answer 7

1) Premature ventricular contractions
2) Tachycardia
3) Premature atrial contractions
4) Ventricular dysrhythmias
5) Atrial fibrillation and Atrial flutter

Question 8

Adverse effects of antiarrhythmic

Answer 8

(a) Light-headedness
(b) Weakness
(c) Hypotension
(d) Bradycardia