A 19-year-old boy presents accompanied by his mother due to…

A 19-year-old boy presents accompanied by his mother due to abnormal behavior for the past few days. The mother says her son has not slept for 3 days and has been expressing ideas about how he plans to cure world hunger; he has also been very energetic and has not stopped talking. The patient has no medical history and takes no medications. He denies any recreational drug, tobacco, or alcohol use. The patient is verbose, hyperactive, and fidgeting on the mental status examination. He is uninterruptible and agitated. A mood stabilizer that is also used for seizures is recommended. The patient is advised that possible side effects of this medication include weight gain and sedation. Which of the following is another possible adverse effect of this medication? 

A 44-year-old woman has been prescribed medication for treat…

A 44-year-old woman has been prescribed medication for treatment-resistant depression. She is told to discontinue her sertraline 14 days before starting this medication. At lower doses, this medication works selectively on an enzyme that metabolizes phenylethylamine. Which of the following medications was she most likely prescribed? 

A 44-year-old woman with 3 months of polyuria, polydipsia, w…

A 44-year-old woman with 3 months of polyuria, polydipsia, weakness, dry skin, and frequent waking during the night to urinate. Her history is significant for bipolar disorder, and she is taking lithium carbonate. Vital signs are blood pressure 110/80 mmHg, heart rate 80 bpm, respiratory rate 16 breaths/min, and temperature of 98F (36.7C). Physical examination shows dry mucus membranes. Laboratory results are fasting glucose 90mg/dL, plasma osmolality 290 mOsmol/kg, and urine osmolality 300 mOsmol/kg. A water deprivation test results in serum osmolality of 310 mOsmol/kg and a urine osmolality of 300 mOsmol/kg. After the administration of desmopressin, urine osmolality remains at 300mOsmol/kg. What is the next best step in management?