A noninvasive technique used to evaluate blood flow through the major arteries and veins of the neck, arms, and legs is known as what?
a. Cardiac ultrasound
b. Doppler ultrasonography
c. MRI
d. CT
b
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The job of the heart valves is to prevent backflow of blood
Indicate whether the statement is true or false
The best chance to cure a cancer occurs when it is:
A) treated early. B) diagnosed early. C) detected early. D) all of the above.
Your patient is a 60-year-old male with an acute exacerbation of COPD. You may consider giving the patient ipratropium because, in addition to reversing bronchospasm, it is helpful in:
A) reducing inflammation. B) drying bronchial secretions. C) expectoration of mucus. D) stimulating the respiratory center in the medulla.
You are at a park with your family when you hear a call for help. There is a teenager who is "sick." On scene you find a 16-year-old boy who is mildly confused. Friends state that they have been playing basketball for most of the morning and afternoon. The temperature is in the 90s and the humidity is high. The boy's airway is patent and his breathing rate is elevated but adequate. His pulse is
weak and rapid. Observation of his skin reveals it to be pale, cool, and moist. Which of the following would you do first for this patient? a. Lay him in the shade in a supine position, and elevate his feet. b. Lay him down in a side-lying position. c. Administer salt tablets by mouth every 15 minutes. d. Get some newspaper and fan him vigorously.