A febrile 3-month-old male who weighs 13 pounds has a weak cry and has been sick with diarrhea. History includes Tetralogy of Fallot. What should you do?

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Multiple Choice

A febrile 3-month-old male who weighs 13 pounds has a weak cry and has been sick with diarrhea. History includes Tetralogy of Fallot. What should you do?

The key idea is to restore perfusion quickly with an isotonic IV fluid bolus in a dehydrated infant showing signs of poor perfusion. The recommended initial treatment for pediatric hypovolemia or shock is a 20 mL/kg bolus of normal saline given IV, reassessing after the dose. This infant weighs about 5.9 kg (13 pounds), so 20 mL/kg is roughly 118 mL; rounding to 120 mL is appropriate and provides the needed volume expansion promptly. Oral rehydration would not be sufficient here because there are signs of dehydration with compromised perfusion (a weak cry), indicating the need for rapid IV resuscitation. A smaller initial bolus (for example, 60 mL) may under-resuscitate and delay improvement. After the first bolus, reassess perfusion and repeat up to a total of 60 mL/kg if needed, watching for signs of fluid overload given the congenital heart condition.

The key idea is to restore perfusion quickly with an isotonic IV fluid bolus in a dehydrated infant showing signs of poor perfusion. The recommended initial treatment for pediatric hypovolemia or shock is a 20 mL/kg bolus of normal saline given IV, reassessing after the dose. This infant weighs about 5.9 kg (13 pounds), so 20 mL/kg is roughly 118 mL; rounding to 120 mL is appropriate and provides the needed volume expansion promptly. Oral rehydration would not be sufficient here because there are signs of dehydration with compromised perfusion (a weak cry), indicating the need for rapid IV resuscitation. A smaller initial bolus (for example, 60 mL) may under-resuscitate and delay improvement. After the first bolus, reassess perfusion and repeat up to a total of 60 mL/kg if needed, watching for signs of fluid overload given the congenital heart condition.

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