A 30-year-old woman is evaluated for almost daily headaches and intermittent blurry vision.  Medical history includes obesity but no other chronic conditions.  Physical examination shows bilateral symmetric papilledema.  There are no other focal neurological deficits.  Brain imaging is normal, and blood cell counts and serum chemistry studies are within normal limits.  Lumbar puncture reveals an elevated opening pressure, and idiopathic intracranial hypertension is diagnosed.  Weight loss is advised, and the patient is prescribed acetazolamide therapy.  Which of the following changes are most likely to occur in this patient over the next several days due to the medication?