Approximately how much blood is present in a newborn?

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Multiple Choice

Approximately how much blood is present in a newborn?

Explanation:
The amount of blood in a newborn scales with body weight, about 80–90 ml per kilogram. With a typical birth weight around 3–3.5 kg, that totals roughly 240–315 ml. 300 ml sits right in the middle of that range, making it a sensible approximate value. The other numbers are outside the normal neonatal range: 800 ml is far too high for a newborn, 500 ml exceeds the usual total, and 100 ml is far too little. So approximately 300 ml is the best estimate.

The amount of blood in a newborn scales with body weight, about 80–90 ml per kilogram. With a typical birth weight around 3–3.5 kg, that totals roughly 240–315 ml. 300 ml sits right in the middle of that range, making it a sensible approximate value. The other numbers are outside the normal neonatal range: 800 ml is far too high for a newborn, 500 ml exceeds the usual total, and 100 ml is far too little. So approximately 300 ml is the best estimate.

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