A 58-year-old man with cardiac dysfunction is placed on propranolol. Over the ensuing days, he develops worsening pedal edema, and review of his serum electrolyte reveals a serum sodium of 151 mEq/L. What is the most appropriate treatment for this patient?

A 58-year-old man with cardiac dysfunction is placed on propranolol. Over the ensuing days, he develops worsening pedal edema, and review of his serum electrolyte reveals a serum sodium of 151 mEq/L. What is the most appropriate treatment for this patient?

A 19-year-old college student has come to the conclusion that smoking one cigarette per day may help him excel in his classes. Note: This behavior is not endorsed by the American Medical Association. The student's belief in having one cigarette per day may actually improve which of the following performance areas?

A mother brings her unconscious 14-year-old son to the emergency department. He was found unresponsive in his bedroom. His respirations are 10 breaths per minute. The mother suspects that her son has been abusing her prescription diazepam, showing her empty pill bottle. What should be given to him to counteract the diazepam?

A 3-year-old boy who is suffering from convulsions is brought to the emergency department by his parents. They report finding him eating a rodenticide, which they brought with them for identification. The active ingredient in this brand of poison is strychnine. How does strychnine work?

A 56-year-old man came to the clinic with complaints of tremor, bradykinesia, and “a feeling of persistent restlessness” after beginning a new antipsychotic regimen 2 months ago. The patient has a history of schizophrenia and depression. He is afraid he may have Parkinson's syndrome. The doctor recommended cessation of the new regimen and assures the patient the symptoms will clear after a few weeks or months after withdrawal. What antipsychotic was the most likely to have caused the patient's symptoms?