Which of the following adverse effects is seen when muscarinic receptors are blocked by antipsychotics?
a. tardive dyskinesia
b. tachycardia
c. xerostomia
d. weight gain
a. Tardive dyskinesia is an extrapyramidal symptom that is not always reversible and is characterized by involuntary, persistent movements of the tongue (rolling), and lips (lip smacking), lateral jaw movements, chewing movements, blinking, rocking back and forth, and facial muscle movement. Oral dyskinesias may result in bruxism, broken teeth, tongue trauma, and ulcerations.
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A patient has a fever of 105°F, irritability, delirium, tachycardia, vomiting, and hypotension. These signs and symptoms are most consistent with:
A) thyrotoxic crisis. B) myxedema. C) Graves' disease. D) hypothyroidism.
Obstructive sleep apnea is most commonly treated with which of the following?
a. Pressure-support ventilation c. Continuous man-datory ventilation b. Pressure-controlled ventilation d. Bilevel positive airway pressure
The original penicillin was:
A. penicillin A B. penicillin B C. penicillin I D. penicillin G
Signs of meningeal irritation, such as nuchal rigidity, are MOST commonly seen in patients with a(n):
A) subdural hematoma. B) epidural hematoma. C) intracerebral hematoma. D) subarachnoid hemorrhage.