A 4-month-old male infant has been vomiting and having watery diarrhea for two days. His mother says the infant has not urinated at all today. The baby's lips and oral mucosa are dry, and his fontanelles are sunken. The infant's extremities are cold to the elbows and knees. Capillary refill is 5 seconds. Heart rate is 170 . ECG shows a narrow complex tachycardia with P waves visible. Management
should include:
a. infusion of 20 mL/kg lactated Ringer's.
b. cardioversion at 0.5 to 1 j/kg.
c. checking a "dex" stick with possible administration of D25W for hypoglycemia.
d. both A and C.
d
Health Professions
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