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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.
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The nurse is administering IV nitroglycerin to a patient with a myocardial infarction (MI). Which of the following actions should the nurse take to evaluate the effectiveness of the medication?
- A. Check blood pressure.
- B. Monitor apical pulse rate.
- C. Monitor for dysrhythmias.
- D. Ask about chest discomfort.
Correct Answer: D
Rationale: The goal of IV nitroglycerin administration in MI is relief of chest pain by improving the balance between myocardial oxygen supply and demand. The nurse also will monitor heart rate and BP and observe for dysrhythmias, but these parameters will not indicate whether the medication is effective.
The nurse is administering a fibrinolytic agent to a patient with an acute myocardial infarction. Which of the following assessments should cause the nurse to stop the drug infusion?
- A. Bleeding from the gums
- B. Surface bleeding from the IV site
- C. A decrease in level of consciousness
- D. A non-sustained episode of ventricular tachycardia
Correct Answer: C
Rationale: The change in level of consciousness indicates that the patient may be experiencing intracranial bleeding, a possible complication of fibrinolytic therapy. Bleeding of the gums and prolonged bleeding from IV sites are expected adverse effects of the therapy. The nurse should address these by avoiding any further injuries, but they are not an indication to stop infusion of the fibrinolytic medication. A non-sustained episode of ventricular tachycardia is a common reperfusion dysrhythmia and may indicate that the therapy is effective.
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 caring for a patient who has had an acute myocardial infarction and the patient asks the nurse about when sexual intercourse can be resumed. Which of the following responses by the nurse is best?
- A. Most patients are able to enjoy intercourse without any complications.
- B. Sexual activity uses about as much energy as climbing two flights of stairs.
- C. The doctor will discuss sexual intercourse when your heart is strong enough.
- D. Holding and cuddling are good ways to maintain intimacy after a heart attack.
Correct Answer: B
Rationale: Sexual activity places about as much physical stress on the cardiovascular system as climbing two flights of stairs. The other responses do not directly address the patient's question, or may not be accurate for this patient.
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.