Pharmacology

Q: Which of the following calcium channel blockers may be employed parenterally in the treatment of cardiac arrhythmias? I. verapamil (Isoptin, Calan) II. isradipine (DynaCirc) III. amlodipine (Norvasc)

(a) :  I only
(b) :  III only
(c) :  I and II only
(d) :  II and III only
(e) :  I, II, and III
Answer:  I only
Explanation:   Verapamil (Calan, Isoptin) is a calcium channel-blocking agent used orally and parenterally in the treatment of cardiac arrhythmias. The other calcium channel-blocking agents listed are used in the treatment of angina pectoris and/or essential hypertension. Oral verapamil is also used for these indications.

Q: Effects expected as a result of inhaling the smoke of cannabis (marijuana) include I. decreased pulse rate II. perceptual changes III. vascular congestion of the eye

(a) :  I only
(b) :  III only
(c) :  I and II only
(d) :  II and III only
(e) :  I, II, and III
Answer:  II and III only
Explanation:   Inhalation of the smoke of cannabis generally results in increased pulse rate, perceptual changes, and vascular congestion of the eye.

Q: Liotrix is a thyroid preparation that contains I. desiccated thyroid II. levothyroxine sodium III. liothyronine sodium

(a) :  I only
(b) :  III only
(c) :  I and II only
(d) :  II and III only
(e) :  I, II, and III
Answer:  II and III only
Explanation:   Liotrix consists of a uniform mixture of synthetic levothyroxine sodium (T4) and liothyronine sodium (T3) in a ratio of 4:1 by weight. It is used in products such as Euthroid and Thyrolar as a thyroid hormone supplement.

Q: Which one of the following is NOT a pro- gestin?

(a) :  norethynodrel
(b) :  norethindrone
(c) :  mestranol
(d) :  levonorgestrel
(e) :  ethynodiol diacetate
Answer:  mestranol
Explanation:   Mestranol is an estrogen commonly employed in several oral contraceptive products (eg, Norinyl, Ortho-Novum).

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