Perfusion Basic Science Practice Questions

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Perfusion Basic Science Practice Questions An advantage of continuous warm blood cardioplegia is - ✔✔Increased oxygen delivery Intra-aortic balloon augmentation is contraindicated in pts with -... ✔✔Aortic insufficiency When using a roller pump, aortic dissection caused by the aortic cannula may be detected by - ✔✔Elevated arterial line pressure The most significant advantage of venovenous ECMO over venoarterial ECMO is - ✔✔Unaffected pulmonary hemodynamics The rate of water extraction using an ultrafiltration device is dependent upon - ✔✔1. Number, depth, and diameter of membrane pores 2.transmembrane pressure 3. Blood flow rate When compared to trueembranes, hydrophobic microporous membrane oxygenators may exhibit - ✔✔Fluid passage into the gas compartment A low venous oxygen saturation may indicate - ✔✔1. Increased oxygen utilization 2. Inadequate pump output 3. Failure of the oxygenator to oxygenate the blood Polyvinyl chloride tuning in the roller pump usually deteriorates by - ✔✔Cracking and breaking from the outer edge in The theoretical advantage of blood cardioplegia over crystalloid is evidenced by - ✔✔1. Greater preservation of myocardial high energy phosphates 2. Greater myocardial oxygen utilization 3. Reduced cardiac enzyme release in the immediate post operative period Activated factor X is the first step in which of the following coagulation stages - ✔✔Common pathway Under normal physiological conditions, which organ has the lowest oxygen consumption per unit weight - ✔✔Kidney The release of NE by the nerve impulses causes interaction with - ✔✔Alpha receptors In a pt with chronic hypoxic condition, the oxyhemoglobin dissociation curve is shifted to the right by - ✔✔Increased 2,3 DPG levels The use of citrate phosphate dextrose (CPDA) blood in the perfusate affects what parameter - ✔✔Ionized calcium Verapamil has actions similar to those of - ✔✔Nif [Show More]

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