Hypoelectrolytemia as a Presentation and Complication of

We describe three patients with cystic fibrosis (CF) with four episodes of hy-poelectrolytemia, two of which were associated with documented metabolic al-kalosis. CF should be included in the differential diagnosis of infants and children presenting with hypoelectrolytemia and metabolic alkalosis. Patients with CF are at risk of developing severe hypochloremia in hot weather and during intercurrent illness. An abrupt diminution of oral intake is an important suggestive sign, alerting the physician to look for the development of hypoelectrolytemia. ~’FC~~~~GTR4~~,,~’T’EIv~I ~ and metabolic al-kalosis occur infrequently in children. Excessive salt loss in the sweat of cystic fibrosis (CF) patients is a known cause of this disorder, but CF is sometimes omitted from the differential diagnosis of hypoelec-trolytemia and metabolic alkalosis in medical and pe-diatric text books. In addition, hypoelectrolytemia and metabolic alkalosis continue as recurrent and ofte