All of the following drugs intensify gastrointestinal motility EXCEPT:

Correct Answer: A

Rationale: The correct answer is A: Papaverine. Papaverine is a smooth muscle relaxant, hence it decreases gastrointestinal motility. Metoclopramide, Domperidone, and Cisapride are prokinetic agents that stimulate gastrointestinal motility. Papaverine stands out as the exception due to its muscle-relaxing properties.

Correct Answer: C

Rationale: The correct answer is C because lidocaine can cause adverse reactions such as hypotension, paresthesias, and convulsions due to its effects on the central nervous system. Extrapyramidal disorders can also occur. A: Agranulocytosis and B: Leucopenia are not characteristic adverse reactions of lidocaine. D: Bronchospasm and dyspepsia are not typically associated with lidocaine use. Therefore, the correct choice is C as it aligns with lidocaine's known adverse reactions.

Correct Answer: B

Rationale: Rationale: Hydralazine is known to cause tachycardia as a side effect due to its vasodilatory properties. Lupus erythematosus can also be induced by hydralazine through its autoimmune effects. Seizures, extrapyramidal disturbances, acute hepatitis, and aplastic anemia are not typically associated with hydralazine use. Thus, option B is the correct choice.

Correct Answer: D

Rationale: The correct answer is D because oxytocin is indicated for all the mentioned conditions. A: Oxytocin helps induce labor and augment dysfunctional labor for early vaginal delivery. B: It can be used for incomplete abortion to help expel the remaining products of conception. C: Oxytocin is also used to control postpartum uterine hemorrhage by promoting uterine contractions. Therefore, all the options are valid indications for oxytocin use.

Correct Answer: D

Rationale: Rationale: The major synthetic estrogens are Dienestrol, Diethylstilbestrol, and Benzestrol, but not Estradiol. Estradiol is a natural estrogen produced by the ovaries. Therefore, D is the correct answer. Dienestrol, Diethylstilbestrol, and Benzestrol are synthetic estrogens used in hormone replacement therapy.