Nokea
The nurse is providing an educational workshop about coronary artery disease (CAD) and its risk factors. The nurse explains to participants that CAD has many risk factors, some that can be controlled and some that cannot. What risk factors would the nurse list that can be controlled or modified?
- A. Gender, obesity, family history, and smoking
- B. Inactivity, stress, gender, and smoking
- C. Obesity, inactivity, diet, and smoking
- D. Stress, family history, and obesity
Correct Answer: C
Rationale: The risk factors for CAD that can be controlled or modified include obesity, inactivity, diet, stress, and smoking. Gender and family history are risk factors that cannot be controlled.
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The nurse is participating in the care conference for a patient with ACS. What goal should guide the care teams selection of assessments, interventions, and treatments?
- A. Maximizing cardiac output while minimizing heart rate
- B. Decreasing energy expenditure of the myocardium
- C. Balancing myocardial oxygen supply with demand
- D. Increasing the size of the myocardial muscle
Correct Answer: C
Rationale: Balancing myocardial oxygen supply with demand (e.g., as evidenced by the relief of chest pain) is the top priority in the care of the patient with ACS. Treatment is not aimed directly at minimizing heart rate because some patients experience bradycardia. Increasing the size of the myocardium is never a goal. Reducing the myocardiums energy expenditure is often beneficial, but this must be balanced with productivity.
Preoperative education is an important part of the nursing care of patients having coronary artery revascularization. When explaining the pre- and postoperative regimens, the nurse would be sure to include education about which subject?
- A. Symptoms of hypovolemia
- B. Symptoms of low blood pressure
- C. Complications requiring graft removal
- D. Intubation and mechanical ventilation
Correct Answer: D
Rationale: Most patients remain intubated and on mechanical ventilation for several hours after surgery. It is important that patients realize that this will prevent them from talking, and the nurse should reassure them that the staff will be able to assist them with other means of communication. Teaching would generally not include symptoms of low blood pressure or hypovolemia, as these are not applicable to most patients. Teaching would also generally not include rare complications that would require graft removal.
A patient with an occluded coronary artery is admitted and has an emergency percutaneous transluminal coronary angioplasty (PTCA). The patient is admitted to the cardiac critical care unit after the PTCA. For what complication should the nurse most closely monitor the patient?
- A. Hyperlipidemia
- B. Bleeding at insertion site
- C. Left ventricular hypertrophy
- D. Congestive heart failure
Correct Answer: B
Rationale: Complications of PTCA may include bleeding at the insertion site, abrupt closure of the artery, arterial thrombosis, and perforation of the artery. Complications do not include hyperlipidemia, left ventricular hypertrophy, or congestive heart failure; each of these problems takes an extended time to develop and none is emergent.
The nurse is caring for a patient who has been diagnosed with an elevated cholesterol level. The nurse is aware that plaque on the inner lumen of arteries is composed chiefly of what?
- A. Lipids and fibrous tissue
- B. White blood cells
- C. Lipoproteins
- D. High-density cholesterol
Correct Answer: A
Rationale: As T-lymphocytes and monocytes infiltrate to ingest lipids on the arterial wall and then die, a fibrous tissue develops. This causes plaques to form on the inner lumen of arterial walls. These plaques do not consist of white cells, lipoproteins, or high-density cholesterol.
The nurse is caring for a patient who is believed to have just experienced an MI. The nurse notes changes in the ECG of the patient. What change on an ECG most strongly suggests to the nurse that ischemia is occurring?
- A. P wave inversion
- B. T wave inversion
- C. Q wave changes with no change in ST or T wave
- D. P wave enlargement
Correct Answer: B
Rationale: T-wave inversion is an indicator of ischemic damage to myocardium. Typically, few changes to P waves occur during or after an MI, whereas Q-wave changes with no change in the ST or T wave indicate an old MI.