Medications to treat extrapyramidal side effects from antipsychotic medications, as well as drugs used to treat Parkinson's disease, achieve their therapeutic effects by:
A) enhancing the effects of acetylcholine, an inhibitory neurotransmitter, in the basal ganglia.
B) blocking the release of dopamine from the substantia nigra in the basal ganglia.
C) blocking the transmission of neural impulses through the pyramidal decussation of the brain.
D) increasing the amount of dopamine at the receptor sites in the basal ganglia.
Question 2
Your patient, a known alcoholic, has developed a cardiac arrhythmia that you intend to treat with synchronized cardioversion. Because he is awake, you decide to administer diazepam to ease this experience. However, you find that to induce the desired state you must administer more than twice the normal dose of diazepam. This condition is known as:
A) cumulative effect.
B) cross tolerance.
C) tachyphylaxis.
D) idiosyncrasy.
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Mechanism of action of antipsychotic drugs. (a) Overproduction of dopamine; (b) antipsychotic ...