02-24-2008, 10:50 AM
A 6-year-old boy with cystic fibrosis is
brought to the physician by his mother because his skin has been cooland clammy for 30 minutes. Earlier in the day, he had been playing outdoors, and the temperature was 99 F. When returning indoors, he was thirsty and restless. His
blood pressure is 70/40 mm Hg, and pulse is 120/min.
Examination shows dry mucous membranes. Serum sodium level is 128mEq/L, and serum chloride level is 87 mEq/L. Which of the following is the most likely explanation for these findings?
A Excessive sweat electrolyte level
B Excessive sweat volume
C Excessive urinary output
D Excessive vasopressor secretion
E Inadequate sweat production
thanx
brought to the physician by his mother because his skin has been cooland clammy for 30 minutes. Earlier in the day, he had been playing outdoors, and the temperature was 99 F. When returning indoors, he was thirsty and restless. His
blood pressure is 70/40 mm Hg, and pulse is 120/min.
Examination shows dry mucous membranes. Serum sodium level is 128mEq/L, and serum chloride level is 87 mEq/L. Which of the following is the most likely explanation for these findings?
A Excessive sweat electrolyte level
B Excessive sweat volume
C Excessive urinary output
D Excessive vasopressor secretion
E Inadequate sweat production
thanx