A Nurse Administers Pure Oxygen to a Client During and After

A nurse administers pure oxygen to a client during and after electroconvulsive therapy (ECT) .What is the nurse's rationale for this procedure?

A) To prevent increased intracranial pressure resulting from anoxia
B) To prevent hypotension,bradycardia,and bradypnea due to electrical stimulation
C) To prevent anoxia due to medication-induced paralysis of respiratory muscles
D) To prevent blocked airway resulting from seizure activity