When a neonate has PPHN, what structure(s) does the blood flow through to bypass the lungs?
1. Ductus venosus
2. Foramen ovale
3. Hypogastric arteries
4. Ductus arteriosus
a. 2
b. 1, 3
c. 2, 4
d. 1, 2, 4
C
During PPHN, blood will flow through the foramen ovale and ductus arteriosus to bypass the lungs. Fetal circulation involves blood passing through the foramen ovale, ductus arteriosus, ductus venosus, and hypogastric arteries. See Figure 31-3.
You might also like to view...
A 74-year-old woman is complaining of abdominal pain after falling down five stairs and hitting her abdomen and left hand on a mailbox at the bottom. She also states pain to her left wrist and right ankle, both of which show obvious deformity. She is alert and oriented, and her abdomen is free of bruising but is tender to the left upper and lower quadrant. Her vital signs are: pulse 132,
respirations 22, blood pressure 106/86, and SpO2 at 96 percent. Oxygen has been applied, and she is fully immobilized. Advanced life support has been requested and is 12 minutes away. What is your next action? A) Immobilize the wrist and ankle. B) Monitor the patient and wait for ALS assistance. C) Initiate immediate transport. D) Apply ice to the wrist and ankle.
You are in the process of delivering a baby and have just delivered the baby's head. Which of the following actions should you take next?
a. Turn the baby clockwise and continue the delivery. b. Check the baby's neck for the presence of the umbilical cord. c. Gently pull the baby toward you. d. Suction the baby's mouth, and then the nose.