Misc. Heart and Med Qs

This article covers the basic electrical conduction of the heart and the meds for arrythmias. It should help for N2 and the pharm ATI test.
http://www.nursingcenter.com/prodev/ce_article.asp?tid=538610


1.
When a cardiac electrical cell is at rest, sodium is predominantly
a. inside the cell.
b. outside the cell.
c. equal inside and outside the cell

2.
During depolarization, potassium
a. shifts outside the cell.
b. shifts inside the cell.
c. stays in equal amounts inside and outside the cell.

3.
The time in which a stimulus can't cause a reaction is called
a. automaticity.
b. repolarization.
c. refractory period.

4.
The area of electrical cells with the greatest automaticity is the
a. SA node
b. AV node
c. Purkinje system

5.
The ion predominantly responsible for contraction is
a. sodium.
b. potassium.
c. calcium.

6.
Class Ia antiarrhythmics
a. block calcium channels.
b. block sodium channels.
c. block beta-receptors.

7.
Procainamide is given at a rate of 20 mg/min intravenously or until the QRS complex is greater than
a. 10%.
b. 25%.
c. 50%.

8.
Beta-receptor blockers exert their function by
a. slowing conduction through the SA and AV nodes.
b. increasing the strength of contraction.
c. increasing conduction through the calcium channels.

9.
Amiodarone may cause
a. hypertension.
b. a shortened QT interval.
c. a blue-gray tint to the skin.

10.
The rate of the maintenance infusion of diltiazem is 1. 1 to 4 mg/min. 2. 5 to 10 mg/hr. 3. 17 mg/kg.
a. 1 to 4 mg/min.
b. 5 to 10 mg/hr.
c. 17 mg/kg.

11.
Atropine blocks the effects of
a. calcium.
b. sodium.
c. acetylcholine.

12.
When giving atropine, remember that it
a. increases myocardial oxygen demand.
b. should be given in large amounts in hypothermia.
c. can't be given through an endotracheal tube.

13.
Digoxin is indicated as
a. first-line treatment for bradycardia.
b. treatment for ventricular tachycardia with a pulse.
c. heart rate maintenance in atrial fibrillation and atrial flutter.

14.
When giving adenosine, expect
a. to push it slowly over 3 minutes.
b. the patient to experience asystole.
c. to see a gradual slowing of the heart rate.

15.
Ibutilide is a
a. Class Ib agent.
b. Class II agent.
c. Class III agent.

16.
A therapeutic digoxin level is
a. 0.5 to 2 mcg/ml.
b. 2 to 3 mcg/ml.
c. 3 to 4 mcg/ml.

17.
Tell your patient on digoxin
a. to avoid the sun and use sunblock or his skin will turn blue.
b. to call if he sees halos around objects.
c. that it will increase his heart rate.

18.
Lidocaine can be given to a maximum of
a. 3 mg/kg.
b. 5 mg/kg.
c. 10 mg/kg

19.
Combination alpha-beta blockers
a. vasoconstrict the vessels and decrease the heart rate.
b. vasodilate the vessels and increase the heart rate.
c. vasodilate the vessels and decrease the heart rate.