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Chapter 251.A nurse is describing the process by which blood is ejected into circulation as the chambers of the heart become smaller. The instructor categorizes this action of the heart as what?A)SystoleB)DiastoleC)RepolarizationD)Ejection fractionAns:AFeedback:Systole is the action of the chambers of the heart becoming smaller and ejecting blood. This action of the heart is not diastole (relaxations), ejection fraction (the amount of blood expelled), or repolarization (electrical charging).2.During a shift assessment, the nurse is identifying the client’s point of maximum impulse(PMI). Where will the nurse best palpate the PMI?
The left ventricle is responsible for the apical beat or the point of maximum impulse, which is normally palpated in the left midclavicular line of the chest wall at the fifth intercostal space.3.The nurse is calculating a cardiac patient’s pulse pressure. If the patient’s blood pressure is 122/76 mm Hg, what is the patient’s pulse pressure?
Pulse pressure is the difference between the systolic and diastolic pressure. In this case, this value is 46 mm Hg.4.The nurse is caring for a patient admitted with unstable angina. The laboratory result for the initial troponin I is elevated in this patient. The nurse should recognize what implication of this assessment finding?Because the patient has a history of unstable angina, this is a poor indicator of myocardial injury.
5.The nurse is conducting patient teaching about cholesterol levels. When discussing the patient’s elevated LDL and lowered HDL levels, the patient shows an understanding of the significance of these levels by stating what?A)Increased LDL and decreased HDL increase my risk of coronary artery disease. B)Increased LDL has the potential to decrease my risk of heart disease. C)The decreased HDL level will increase the amount of cholesterol moved away from the artery walls. D)The increased LDL will decrease the amount of cholesterol deposited on the artery walls. Ans:AFeedback:Elevated LDL levels and decreased HDL levels are associated with a greater incidence ofcoronary artery disease.