Which sampling technique selects the members from the population based on the prior knowledge of an expert?
A. Convenience sampling
B. Judgement sampling
C. Quota sampling
D. Cluster sampling
Answer: B
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When the sympathetic neurons cause constriction of blood vessels to a tissue or organ:
a. The function of the tissue or organ slows down b. The function of the tissue or organ increases
What are some major problems with demand-flow O2 delivery systems?
1. They are cumbersome and unattractive. 2. Equipment and maintenance costs are high. 3. The device valve may have slow response times. 4. Catheter and sensor malfunction is common. a. 2 and 4 only b. 1, 2, and 3 only c. 2 and 3 only d. 1, 2, 3, and 4
How does proportional assist ventilation (PAV) differ from pressure support ventilation?
A. PAV provides a guaranteed tidal volume with every breath. B. The inspiratory flow during PAV is constant despite the patient's effort. C. The need for sedation and/or paralysis to achieve patient-ventilator synchrony is greater with PAV. D. PAV unloads a greater percentage of the elastic and resistive burden of the respiratory system.
A patient had a left heart catheterization and a drug-eluting stent was placed in the left anterior descending coronary artery. What modifier is appended to the CPT code?
A. LC B. LD C. LT D. LM