12-05-2006, 11:50 AM
A 5 year old boy is brought to the emergency department 30 minutes after he fainted at home after standing up from a sitting position.His symptoms began 3 days ago with diarrhea and vomiting.He has had no urine output for 18 hrs.His temperature is 99.5,BP is 75/45,pulse is 120/min,and RR is 28/min.Examination show dry lips and tenting of skin.There is no abdominal tenderness.Bowel sounda are hyperactive.The remainder of the exam is normal.His cappilary refill is 5 sec.IV bolus doses of 0.9% saline are administered.Bladder catheterization yields 5 ml of urine.Urinalysis is most likley to show which of the following?
a.blood
b.erythrocyte cast
c.hyaline cast
d.leukocyte cast
e.oxalate cast
a.blood
b.erythrocyte cast
c.hyaline cast
d.leukocyte cast
e.oxalate cast