When comparing the properties of catecholamines and noncatecholamine adrenergic agonists, which statement is correct?
a. Noncatecholamines cannot be given orally.
b. Noncatecholamines can cross the blood-brain barrier.
c. Catecholamines have longer half-lives.
d. Catecholamines are more rapidly metabolized by MAO.
b
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A community-owned hospital has been purchased by a health care conglomerate. The staff is aware that the organizational theory governing the hospital is likely to change
Which statement indicates a lack of understanding of organizational theory on the part of a staff nurse? 1. "If our new bosses want a classical organization, we can expect a strong hierarchy." 2. "If we don't want to see lots of changes, we should hope our new bosses don't like chaos theory." 3. "If this new company is based on systems theory, there will be a lot of focus on how much work we can produce." 4. "If this new company is based on contingency theory, we will see lots of focus on how our environment impacts our work."
The hormone that regulates the circadian rhythms of sleep is:
1. melatonin. 2. melanin. 3. ultradian. 4. Zeitgeber's.
The nurse plans to provide preoperative teaching to an alert older man who has hearing and vision deficits. His wife usually answers most questions that are directed to the patient. Which action should the nurse take when doing the teaching?
a. Use printed materials for instruction so that the patient will have more time to review the material. b. Direct the teaching toward the wife because she is the obvious support and caregiver for the patient. c. Provide additional time for the patient to understand preoperative instructions and carry out procedures. d. Ask the patient's wife to wait in the hall in order to focus preoperative teaching with the patient himself.
Which acne lesions are classified as inflammatory?
a. Closed comedones b. Opened comedones c. Nodules d. Papules e. Pustules