A patient in shock is found unresponsive.The nurse knows that immediate cardiopulmonary resuscitation is required because brain cells begin to die if deprived of oxygen for how many minutes?

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If the brain is deprived of circulation for more than 4 minutes,brain cells die from a lack of oxygen and glucose.As a result,prolonged shock can result in brain death.A.B.Brain cells do not begin to die until 4 minutes have passed without oxygen and glucose.D.Brain cells are dying if deprived of oxygen and glucose for 8 minutes.

A Patient in Shock Is Found Unresponsive