Which of the following is the most effective method for controlling participant factors?
A) Using a homogeneous sample
B) Statistical control
C) Matching subjects
D) Randomization
D
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Techniques for controlling subject characteristics include homogeneity (restricting participants to reduce variability on confounding variables); matching (deliberately making groups comparable on some extraneous variables); statistical procedures; and randomization—the most effective method because it controls all possible confounding variables without researchers having to identify them.
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The ancient Greeks built temples to honor Hygeia, the goddess of health, to:
a. educate priestesses as nurses b. provide a spalike healing environment c. house the sick and infirm being treated by priests and priestesses d. store medicines and literature devoted to the study of medicine
Which hemodynamic parameter is most appropriate for the nurse to monitor to determine the effectiveness of medications given to a patient to reduce left ventricular afterload?
a. Mean arterial pressure (MAP) b. Systemic vascular resistance (SVR) c. Pulmonary vascular resistance (PVR) d. Pulmonary artery wedge pressure (PAWP)
The nurse is preparing to administer tolterodine tartrate (Detrol LA) to a patient who has incontinence. Which symptom would be a contraindication for this drug?
a. Decreased bowel sounds b. Drooling c. Gastric upset d. Pain
A mother has called the triage nurse of the pediatric clinic to ask what she should do for her son's frequent epistaxis episodes. The treatment should include:
1. Having the child sit up with his head tilted forward so that blood does not go down the throat. 2. Encouraging the child to breathe through his nose. 3. Having the child attempt to keep his nose clean. 4. Applying heat to the nares.