Ccrn Exam Questions & Answers Already Verified 2023

What effect does oxygen have on pulmonary vasculature? What efect does hypoxemia have?? {Ans: o2 is a potent vasodilator hypoxemia will cause vasoconstriction}Which of the following accurately describes the normal difference between the pulmonary artery diastolic pressure (PAd) and the pulmonary artery occlusive pressure (PAOP)? {Ans: PAd should be 0-5mmHg higher than the PAOP.}A 52-year-old woman developed an epidural hematoma after being in a motor vehicle collision. She has had a craniotomy to evacuate the clot, and an intraventricular catheter was placed during surgery. Which of the following is important in caring for the patient with an intracranial pressure (ICP) monitoring system? A. Use heparin to maintain integrity of the line. B. Use preservative-free isotonic saline. C. Use a flush system. D. Use a pressure bag. {Ans: ICP monitoring systems are closed systems. A flush system with heparin and a pressure bag with an intermittent flush device is appropriate for vascular pressure monitoring (e.g., arterial catheters and pulmonary artery catheters) but not for intracranial pressure monitoring systems. Preservatives in saline vials can cause meningeal irritation or brain tissue necrosis. Only preservative-free saline should be used to prime the system.}A patient has had a large anterior myocardial infarction