Emergency Medical Technician (EMT) Intermediate Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

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How many milliliters per kilogram (mL/kg) of blood are typically found in an average adult male's body?

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In an average adult male's body, the typical volume of blood is approximately 70 milliliters per kilogram of body weight. This measure is used in various medical calculations, particularly when determining drug dosages or fluid resuscitation needs. The rationale behind using this standard is that the average adult male has a blood volume that accounts for roughly 7% of their body weight; thus, for a 70 kg individual, this translates to about 4.9 liters of blood.

Understanding this standard value is crucial for EMTs as it provides a baseline for assessing patients, especially when estimating blood loss or planning treatment in emergency situations. Knowing the average blood volume helps in making informed decisions about interventions such as administering IV fluids or blood products effectively.

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