There are ________ main coronary arteries in the heart.

A. two
B. four
C. six
D. five


Answer: A

Health Professions

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The common adult dosage of finasteride is:

A) 0.5 mg once daily. B) 5 mg once daily. C) 0.4–0.8 mg once daily. D) 10 mg once daily.

Health Professions

What will happen to cryogenic liquids trapped within a confining space?

A. Expand and become a flammability hazard B. Release into the atmosphere and create a visible fog C. Vaporize, expand, and cause violent pressure explosion D. Vaporize and dissipate into the atmosphere, causing an asphyxiation hazard

Health Professions

Which type of anesthesia desensitizes the mucosa for a brief period?

a. Local b. General c. Topical d. None of the above

Health Professions

A 44 year-old patient who suffered a cerebral vascular accident has been moved from Neuro-ICU to the step-down unit. He becomes diaphoretic and his SpO2 suddenly drops from 95% to 88% on a 32% tracheostomy collar. His heart rate is 115/min, respiratory rate is 42/min and his breath sounds are very diminished. The respiratory therapist is unsuccessful in attempting to pass a 12 Fr suction catheter. The therapist should

A. increase the suction pressure to 120 mm Hg. B. change to a 10 Fr suction catheter. C. replace the tracheostomy tube. D. orally intubate the patient.

Health Professions