The patient needs pharmacological treatment to assist with his sleep patterns.The nurse anticipates that treatment with an anxiety-reducing,relaxation-promoting medication will include the use of which one of the following?

A) Barbiturates.
B) Amphetamines.
C) Benzodiazepines.
D) Tricyclic antidepressants.

Withdrawal from CNS depressants such as barbiturates can cause insomnia and must be managed carefully.Patients can also develop tolerance of and dependence on barbiturates.CNS stimulants,such as amphetamines,should be used sparingly and only under medical management.Amphetamine sulphate may be used to treat narcolepsy;prolonged use may lead to drug dependence.The benzodiazepines cause relaxation,reduce anxiety,and have hypnotic effects by facilitating the action of neurons in the CNS that suppress responsiveness to stimulation,thereby decreasing levels of arousal.Tricyclic antidepressants can cause insomnia when discontinued and should be managed carefully.They are used primarily to treat depression.