The nurse knows that the basic strategies of antianginal therapy are
1. decreased the oxygen consumption of the brain.
2. increased myocardial contractility.
3. increased blood flow to the peripheral blood vessels.
4. increased blood flow to the myocardium.
5. decreased myocardial oxygen demand.
Correct Answer: 4,5
Rationale: Angina is a mismatch between myocardial oxygen supply and oxygen demand. Decreasing brain oxygen consumption will not help correct this problem.
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Why does subject attrition affect internal validity?
a. A study in which the majority of the subjects die calls into question whether the treatment itself is safe. b. Subjects who drop out may differ from those who stay in the study, in terms of an important extraneous variable. c. If subjects drop out of the control group, and not the experimental group, it strongly implies that there is some benefit to participation of which the researchers may not be aware. d. Subject mortality may result in a sample that is so much smaller than anticipated that type II error may result. e. Type I error is almost guaranteed with very unequal sample sizes.
A 5-year-old client has recurrent night terrors. What nursing intervention should the nurse use to help alleviate this problem?
1. Have the child walk around in the room when night terrors occur. 2. The next morning, ask the child to describe the event. 3. Have the child empty the bladder prior to going to bed. 4. Use an additional pillow behind the child's head at night.
Mutual benefit with limited loss for everyone is a goal of:
1. Negotiating 2. Assertiveness 3. Conflict management 4. Cooperation
You are caring for a patient with a diagnosis of pancreatitis. The patient was admitted from a homeless shelter and is a vague historian
The patient appears malnourished and on day 3 of the patient's admission total parenteral nutrition (TPN) has been started. Why would you know to start the infusion of TPN slowly? A) Patients receiving TPN are at risk for hypercalcemia if calories are started too rapidly. B) Malnourished patients receiving parenteral nutrition are at risk for hypophosphatemia if calories are started too aggressively. C) Malnourished patients who receive fluids too rapidly are at risk for hypernatremia. D) Patients receiving TPN need a slow initiation of treatment in order to allow digestive enzymes to accumulate