Answer to Question 1
1
Rationale: When cord prolapse occurs, prompt actions are taken to relieve cord compression and increase fetal oxygenation. The mother should be positioned with her hips higher than her head to shift the fetal presenting part toward the diaphragm. The nurse should push the call light to summon help, and other staff members should call the physician and notify the delivery room. If the cord is protruding from the vagina, no attempt should be made to replace it because that could traumatize it and further reduce blood flow. Oxygen at 8 to 10 L/min by face mask is ad-ministered to the mother to increase fetal oxygenation.
Answer to Question 2
3
Rationale: The PET scan can detect abnormal brain tissue metabolism. A radionuclide is attached to a glucose component and is injected as an intravenous bolus. The computer records the chemical activity in the brain following injection. The test uses magnetic fields to produce images, the test provides cross-sectional views of the brain, and the test views bones of the skull, nasal sinuses, and vertebrae describe magnetic resonance imaging (MRI), computer tomography (CT) scanning, and radiography, respectively.