NUR 239 Exam 3 (Questions with correct answers)

Upon admission assessment, the nurse hears a murmur located at the fifth intercostal space, midclavicular line. The client asks, "What does that mean?" The nurse will base her answer on which of the following physiologic principles? correct answers "You have a heart valve that is diseased." A client is diagnosed with an abdominal aortic aneurysm that the physician just wants to "watch" for now. When teaching the client about signs/symptoms to watch for, the nurse will base the teaching on which of the following physiological principles? correct answers As the aneurysm grows, more tension is placed on the vessel wall, which increases the risk for rupture. A client has entered hypovolemic shock after massive blood loss in a car accident. Many of the client's peripheral blood vessels have consequently collapsed. How does the Laplace law account for this pathophysiologic phenomenon? correct answers Blood pressure is no longer able to overcome vessel wall tension. Which of the following statements about vascular compliance is accurate? correct answers Veins can act as a reservoir for storing large quantities of blood. In the days following a tooth cleaning and root canal, a client has developed an infection of the thin, three-layered membrane that lines the heart and covers the valves. What is this client's most likely diagnosis? correct answers Endocarditis Following several weeks of increasing fatigue and a subsequent diagnostic workup, a client has been diagnosed with mitral valve regurgitation. Failure of this heart valve would have which of the following consequences? correct answers Backflow from the left ventricle to the left atrium Heart muscle differs from skeletal muscle tissue by being able to generate: correct answers Action potentials When discussing the AV node's role in the electrical conduction of the heart with a client newly diagnosed with an AV block, which of the following statements are accurate? Select all that apply. correct answers A block at the AV bundle of His interferes with the normal delay of the impulse, thereby interfering with complete ejection of blood from the atria prior to ventricular contraction. When there is an AV block, impulses from the atria and ventricles beat independently of each other so, the heart rhythm is usually chaotic and not regular. If the parasympathetic neurotransmitter releases acetylcholine, the nurse should anticipate observing what changes in the ECG pattern? correct answers Slowing of heart rate to below 60 beats/minute