Question 91 · LDEK · Cardiac arrest

Human brain accounts for 2% of body weight, uses 20 % of oxygen and 65 % of glucose. Its oxygen supply would be sufficient for:

  1. A. 10 sec.
  2. B. 1 minute.
  3. C. 4-6 minutes.
  4. D. 5-10 minutes.
  5. E. 10-20 minutes.
Hint

Distinguish how long the brain's oxygen store lasts from how long it takes for irreversible neuronal damage to begin.

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