This type of eicosanoid causes the contraction of the smooth muscles of the uterus, making it important during labor.

Correct Answer: A

Rationale: The correct answer is A: Prostaglandins. Prostaglandins are known to induce uterine contractions, playing a crucial role in the process of labor. They stimulate smooth muscle contraction, including that of the uterus, leading to the initiation and progression of labor. Thromboxanes are involved in platelet aggregation, not uterine contractions. Leukotrienes are associated with inflammation and immune responses, not uterine contractions. NSAIDs inhibit prostaglandin synthesis, therefore, they would not cause uterine contractions.

Correct Answer: A

Rationale: The correct answer is A: Imipramine hydrochloride. Imipramine is a tricyclic antidepressant that is also used to treat childhood enuresis. It works by affecting neurotransmitters in the brain, helping to control the bladder and reduce bedwetting. Imipramine pamoate is a similar drug but is not typically used for enuresis in children. Therefore, choice B is incorrect. Choice C is incorrect because only imipramine hydrochloride is specifically indicated for childhood enuresis. Choice D is incorrect as imipramine hydrochloride is indeed used for this condition.

Correct Answer: D

Rationale: The correct answer is D: All of the above. Opioid analgesics are primarily used for pain relief by acting on the central nervous system to reduce the perception of pain. They can also help suppress cough reflex, making them useful in some cough suppressants. Opioids can also slow down intestinal motility, which can help alleviate diarrhea. Therefore, the correct answer is D as opioids can provide symptomatic relief for pain, cough, and diarrhea. Choices A, B, and C are incorrect because they do not encompass the full range of symptomatic relief that opioids can provide.

Correct Answer: C

Rationale: The correct answer is C: Both of the above. Serotonin agonists are used in anxiety management (e.g., Buspirone) due to their anxiolytic effects by modulating serotonin receptors. They are also used in migraine treatment (e.g., Sumatriptan) to constrict blood vessels and reduce inflammation in the brain. Both options are valid clinical uses of serotonin agonists, making choice C correct. Choices A and B alone are incorrect as they only represent one of the clinical uses, while choice D is incorrect as serotonin agonists do have clinical uses.

Correct Answer: A

Rationale: The correct answer is A: Diazepam. This is because Diazepam is a fast-acting benzodiazepine that helps terminate seizures quickly, making it the drug of choice for status epilepticus. It works by enhancing the effects of the inhibitory neurotransmitter GABA, which helps to calm excessive electrical activity in the brain during a seizure. Phenobarbital (B) and Phenytoin (C) are not recommended as first-line treatments for status epilepticus due to slower onset of action. Valproic Acid (D) is also not the drug of choice for status epilepticus as it is typically used for long-term seizure management rather than acute seizure control.