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The nurse is caring for a patient who has survived a sudden cardiac death (SCD) event and has no evidence of an acute myocardial infarction. After the patient has recovered, which of the following information should the nurse teach the patient?
- A. That sudden cardiac death events rarely reoccur
- B. About the purpose of outpatient Holter monitoring
- C. How to self-administer low-molecular-weight heparin
- D. To limit activities after discharge to prevent future events
Correct Answer: B
Rationale: Holter monitoring is used to determine whether the patient is experiencing dysrhythmias such as ventricular tachycardia during normal daily activities. SCD is likely to recur. Heparin will not have any effect on the incidence of SCD, and SCD can occur even when the patient is resting.
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Which of the following information about a patient who has been receiving fibrinolytic therapy for an acute myocardial infarction is most important for the nurse to communicate to the health care provider?
- A. No change in the patient's chest pain
- B. A large bruise at the patient's IV insertion site
- C. A decrease in ST segment elevation on the electrocardiogram (ECG)
- D. An increase in cardiac enzyme levels since admission
Correct Answer: A
Rationale: Continued chest pain suggests that the fibrinolytic therapy is not effective and that other interventions such as percutaneous coronary intervention (PCI) may be needed. Bruising is a possible adverse effect of fibrinolytic therapy, but it is not an indication that therapy should be discontinued. The decrease of the ST segment elevation indicates that fibrinolysis is occurring and perfusion is returning to the injured myocardium. An increase in cardiac enzyme levels is expected with reperfusion and is related to the washout of enzymes into the circulation as the blocked vessel is opened.
The nurse is caring for a patient with a non-ST-segment-elevation myocardial infarction (NSTEMI) who is receiving heparin. Which of the following information explains the purpose of the heparin?
- A. Platelet aggregation is enhanced by IV heparin infusion.
- B. Heparin will dissolve the clot that is blocking blood flow to the heart.
- C. Coronary artery plaque size and adherence are decreased with heparin.
- D. Heparin will prevent the development of new clots in the coronary arteries.
Correct Answer: D
Rationale: Heparin helps prevent the conversion of fibrinogen to fibrin and decreases coronary artery thrombosis. It does not change coronary artery plaque, dissolve already formed clots, or enhance platelet aggregation.
The nurse is evaluating the outcomes of pre-operative teaching with a patient scheduled for a coronary artery bypass graft (CABG) using the internal mammary artery. Which of the following patient statements indicates that additional teaching is needed?
- A. I will have incisions in my leg where they will remove the vein.
- B. They will circulate my blood with a machine during the surgery.
- C. I will need to take an Aspirin a day after the surgery to keep the graft open.
- D. They will use an artery near my heart to bypass the area that is obstructed.
Correct Answer: A
Rationale: When the internal mammary artery is used there is no need to have a saphenous vein removed from the leg. The other statements by the patient are accurate and indicate that the teaching has been effective.
The nurse is providing teaching to a patient about use of sublingual nitroglycerin. Which of the following patient statements indicates that the teaching has been effective?
- A. I will put the nitroglycerin tablet under my tongue if I get chest pain.
- B. I like fresh salmon and I will plan to eat it more often.
- C. I will miss being able to eat peanut butter sandwiches.
- D. I can have a cup of coffee with breakfast if I want one.
Correct Answer: A
Rationale: Sublingual nitroglycerin is taken by placing the tablet under the tongue to relieve chest pain. The other statements relate to dietary preferences and do not indicate understanding of nitroglycerin use.
Which of the following electrocardiogram (ECG) changes is most important for the nurse to communicate to the health care provider when caring for a patient with chest pain?
- A. Frequent premature atrial contractions (PACs)
- B. Inverted P wave
- C. Sinus tachycardia
- D. ST segment elevation
Correct Answer: D
Rationale: The patient is likely to be experiencing an ST-segment-elevation myocardial infarction (STEMI) and immediate therapy with percutaneous coronary intervention (PCI) or fibrinolytic medications is indicated to minimize the amount of myocardial damage. The other ECG changes also may suggest a need for therapy, but not as rapidly.