A 39-year-old man with schizophrenia presents to his primary care physician for follow-up. He is currently taking thioridazine. Which of the following statements regarding his recovery is true?

A 39-year-old man with schizophrenia presents to his primary care physician for follow-up. He is currently taking thioridazine. Which of the following statements regarding his recovery is true?

A 53-year-old man who is a 40 pack-year smoker presents to his primary care physician with a productive cough, fever, and chills. He sits in an office all day and recently began using an air conditioner as the weather has warmed. No organisms were visible with a gram stain of sputum, but a silver stain reveals rods. His medical history includes myocardial infarction, for which he takes ticlopidine; hyperglycemia, for which he takes metformin; and a congenital QT segment prolongation. For which of the following reasons would the physician be hesitant to prescribe erythromycin to treat his legionellosis?

A 49-year-old man with a fungal infection is hospitalized and is being treated with oral ketoconazole. To help with intestinal absorption of this agent, which of the following agents should be given to this patient?

A 24-year-old Caucasian woman with dysplastic nevus syndrome presents to her annual checkup with a suspicious-looking mole. The physician decides to remove it. To prepare the site, she injects a lidocaine preparation. The surrounding tissue blanches. What is most likely present with the lidocaine that causes the blanching?

A 34-year-old man with a sacral spinal cord injury has neurogenic bowel. He is on a bowel regimen that involves periodic bowel cleansing with soapsuds enemas. He is given a trial of bethanechol for this condition. Which of the following adverse events must his treating physician be aware of?