Before draining into the right atrium, where do the large veins of the coronary circulation gather together?
a. Coronary sinus
b. Left posterior coronary vein
c. Right coronary sulcus
d. Thebesian veins
ANS: A
These veins gather together into a large vessel called the coronary sinus, which passes left to right across the posterior surface of the heart. The coronary sinus empties into the right atrium.
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The difference between primary apnea and secondary apnea in a newborn is that:
a. infants with primary apnea typically will respond to simple stimulation and oxygen, while those in secondary apnea will not. b. bradycardia is present in primary apnea but not in secondary apnea. c. infants with secondary apnea typically will respond to simple stimulation and oxygen, whereas those in primary apnea will not. d. bradycardia is present in secondary apnea but not in primary apnea.
You have been called to a local dialysis center for a patient with a bleeding fistula on her right upper arm. Despite all care at the center, the site continues to bleed. Your best choice in the care of the patient would be:
A) to apply a constricting band above the fistula. B) to place a pressure dressing over the fistula. C) lowering the arm for and during transport. D) to allow site the bleed to wash bacteria from the fistula.