case_images: PMC4327551_01
case_images: The cases were followed with plasma AVP (p-AVP) measurements 7 and 4 times, respectively, both during clinical controls where they were clinically well and during admissions with attacks of CVS. The values marked by an asterisk and a caret were taken during the attacks described in the text.
case_images: crg-0009-0020-g01.jpg
case_images: PMC4327551_01_crg-0009-0020-g01.jpg
case_images: F1
case_images: At this point plasma AVP was inappropriately high at 3.17 pg/ml, with a concurrent plasma osmolality at 276 mosm/kg (fig. 1, the specific measurement is marked by an asterisk). Over a 1-year period she was followed with plasma AVP measurements on 7 occasions (fig. 1). AVP levels on three other occasions (fig. 1). After the ninth attack he was commenced on valproate (15 mg/kg once daily) as prophylaxis, with prompt effect.