Normal cerebral blood flow is approximately which value in mL/100 g/min?

Normal cerebral blood flow is approximately which value in mL/100 g/min?

• A. 30
• B. 40
• C. 50
• D. 60

Answer: (C)

Normal cerebral blood flow reflects how much blood is delivered to brain tissue to meet its high metabolic needs, expressed per 100 g of brain tissue per minute. In adults, this perfusion is about 50 mL per 100 g of brain tissue each minute. This value aligns with the typical total brain blood flow of roughly 700–750 mL/min for a brain weighing about 1.3–1.4 kg, which when divided by the brain’s mass gives around 50 mL/100 g/min. Values well below this would risk ischemia, while the standard reference remains around the mid-50s but is commonly rounded to 50.

Normal cerebral blood flow reflects how much blood is delivered to brain tissue to meet its high metabolic needs, expressed per 100 g of brain tissue per minute. In adults, this perfusion is about 50 mL per 100 g of brain tissue each minute. This value aligns with the typical total brain blood flow of roughly 700–750 mL/min for a brain weighing about 1.3–1.4 kg, which when divided by the brain’s mass gives around 50 mL/100 g/min. Values well below this would risk ischemia, while the standard reference remains around the mid-50s but is commonly rounded to 50.