Which of the following blood tests is most indicative of cardiac damage? A. Troponin I B. Complete blood count (CBC) C. Creatine kinase (CK) D. Lactate dehydrogenase Correct Answer: A. Troponin I Troponin I levels rise rapidly and are detectable within 1 hour of myocardial injury. Troponin levels aren’t… Read More »
Which of the following diagnostic tools is most commonly used to determine the location of myocardial damage? A. Cardiac catheterization B. Cardiac enzymes C. Echocardiogram D. Electrocardiogram (ECG) Correct Answer: D. Electrocardiogram (ECG) The ECG is the quickest, most accurate, and most widely used tool to determine the location… Read More »
A client with myocardial infarction has been transferred from a coronary care unit to a general medical unit with cardiac monitoring via telemetry. A nurse plans to allow for which of the following client activities? A. Strict bed rest for 24 hours after transfer. B. Bathroom privileges and self-care activities. C. Unsupervised… Read More »
Which of the following types of pain is most characteristic of angina? A. Knifelike B. Sharp C. Shooting D. Tightness Correct Answer: D. Tightness The pain of angina usually ranges from a vague feeling of tightness to heavy, intense pain. Pain impulses originate in the most visceral muscles and… Read More »
Which of the following parameters is the major determinant of diastolic blood pressure? A. Baroreceptors B. Cardiac output C. Renal function D. Vascular resistance Correct Answer: D. Vascular resistance Vascular resistance is the impedance of blood flow by the arterioles that most predominantly affects the diastolic pressure.… Read More »
Which of the following factors can cause blood pressure to drop to normal levels? A. Kidneys’ excretion of sodium only. B. Kidneys’ retention of sodium and water. C. Kidneys’ excretion of sodium and water. D. Kidneys’ retention of sodium and excretion of water Correct Answer: C. Kidneys’… Read More »
Baroreceptors in the carotid artery walls and aorta respond to which of the following conditions? A. Changes in blood pressure. B. Changes in arterial oxygen tension. C. Changes in arterial carbon dioxide tension. D. Changes in heart rate. Correct Answer: A. Changes in blood pressure. Baroreceptors located… Read More »
Which of the following terms describes the force against which the ventricle must expel blood? A. Afterload B. Cardiac output C. Overload D. Preload Correct Answer: A. Afterload Afterload refers to the resistance normally maintained by the aortic and pulmonic valves, the condition and tone of the… Read More »
Which of the following terms is used to describe the amount of stretch on the myocardium at the end of diastole? A. Afterload B. Cardiac index C. Cardiac output D. Preload Correct Answer: D. Preload Preload is the amount of stretch of the cardiac muscle fibers at… Read More »
A 57-year-old client with a history of asthma is prescribed propranolol (Inderal) to control hypertension. Before administered propranolol, which of the following actions should the nurse take first? A. Monitor the apical pulse rate. B. Instruct the client to take medication with food. C. Question the physician about the order. D. Caution… Read More »