United State Medical Licensing Examination (Step 1) Set 22

Serotonin (5-HT) is one of several mediators of the signs and symptoms of carcinoid tumor. When released from this neoplasm, most of the manifestations of 5-HT are the result of activation of the 5-H receptor. These manifestations are therefore likely to include which of the following effects?

Which of the following drugs is useful in asthma because it stabilizes mast cells?

Zolpidem is a newer sedative-hypnotic drug approved for use as a sleeping pill. Which of the following statements describes the major difference between zolpidem and older hypnotics such as barbiturates and benzodiazepines?

A child with absence seizures is being evaluated for therapy with ethosuximide. Which of the following is the most common adverse effect of ethosuximide in children?

A 70-year-old man presents with Parkinson's disease in an early stage. Which of the following drugs acts directly on dopamine receptors to reduce the signs and symptoms of Parkinson's disease?

Which of the following agents used in general anesthesia is least likely to cause postoperative nausea and vomiting?

Which of the following is the only local anesthetic that causes vasoconstriction and may result in an increase in blood pressure?

A 26-year-old woman with cerebral palsy complains of severe pain associated with spasms in her leg muscles. Which of the following drugs is used in cerebral palsy to reduce skeletal muscle spasticity by an action on cholinergic nerve endings?

A 35-year-old man has severe schizophrenia. He is institutionalized and maintained on antipsychotic medication. Which of the following drugs is most likely to cause parkinsonian adverse effects?

Which of the following drugs is most dangerous in suicidal overdosage?