What is the recommended IV fluid bolus volume for a febrile 3-month-old with dehydration and a history of Tetralogy of Fallot?

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Multiple Choice

What is the recommended IV fluid bolus volume for a febrile 3-month-old with dehydration and a history of Tetralogy of Fallot?

In pediatric dehydration, restoring intravascular volume quickly with an isotonic crystalloid bolus is the priority. The standard approach is 20 mL per kilogram given IV over a short interval to replete circulating volume and improve perfusion. For a febrile 3-month-old, this weight-based dose is used because it accounts for how much fluid the child can safely receive relative to their size. In a 3-month-old with Tetralogy of Fallot, increasing preload can help improve pulmonary blood flow and overall hemodynamics, which can mitigate cyanosis during stress or a spells by enhancing forward flow to the lungs. So the bolus volume you’d aim for is the weight-based amount, which for a typical infant around 6 kg works out to about 120 mL of normal saline delivered as an IV bolus. After administering, reassess perfusion and oxygenation and repeat only if necessary, up to the recommended total daily limits, watching closely for signs of fluid overload.

In pediatric dehydration, restoring intravascular volume quickly with an isotonic crystalloid bolus is the priority. The standard approach is 20 mL per kilogram given IV over a short interval to replete circulating volume and improve perfusion. For a febrile 3-month-old, this weight-based dose is used because it accounts for how much fluid the child can safely receive relative to their size.

In a 3-month-old with Tetralogy of Fallot, increasing preload can help improve pulmonary blood flow and overall hemodynamics, which can mitigate cyanosis during stress or a spells by enhancing forward flow to the lungs. So the bolus volume you’d aim for is the weight-based amount, which for a typical infant around 6 kg works out to about 120 mL of normal saline delivered as an IV bolus. After administering, reassess perfusion and oxygenation and repeat only if necessary, up to the recommended total daily limits, watching closely for signs of fluid overload.

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