Analysis of covariance (ANCOVA) removes the effect of what type of variables before testing whether mean group differences on the outcome variable are statistically significant?
A) Independent
B) Mediating
C) Confounding
D) Dichotomous
C
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As part of a multiple trauma injury, a patient developed hemorrhagic hypovolemic shock, necessitating fluid resuscitation with massive amounts of intravenous crystalloid fluids and blood products as well as extensive surgical repair under general
anesthesia. Twenty-four hours later, the patient develops hypoxia unresponsive to oxygen therapy and diffuse white, ground-glass infiltrates of the lung fields on a chest radiograph. Development of this complication has what effect on the patient's recovery? A) Significantly greater chance of death B) No change in outcome expectations C) Outcome depends on treatment. D) Lower chance of death
A patient is prescribed sildenafil (Viagra) for erectile dysfunction. Which teaching points regarding administration of this drug should you teach this patient? (select all that apply)
a. Take the drug 30 minutes to 1 hour before sexual activity. b. Take the drug 1 to 2 hours before sexual activity. c. You will need sexual stimulation to achieve an erection. d. You will notice that you attain an erection within an hour of taking the drug. e. The effects of the drug should last around 4 hours. f. The effects of the drug can last for up to 36 hours.
When designing a combination regimen for the treatment of cancer all of the following "rules " apply EXCEPT:
A. Select drugs that have activity against tumor when used alone B. Select drugs that have different mechanisms of action C. Select drugs that have similar host toxicity D. Select drugs that have potential synergistic interactions
The physician ordered a loading dose of medication for the patient; it is to be followed by a lower dose. When the patient receives the lower dose, she says to the nurse, "I think my doctor made a mistake; my medication dose is too low." What is the best response by the nurse?
1. "The initial dose shortened the half-life, so the medication would work more quickly." 2. "We always give medications this way; the doctor did not make a mistake." 3. "You had a larger dose initially so that the medication would work more quickly." 4. "Giving a larger dose initially will reduce the chance of side effects."