A patient is apneic and has no palpable pulses. The heart monitor shows sinus tachycardia, rate 132. What action should the nurse take next?

This statement indicates effective learning because serum cardiac markers are indeed proteins that are released from necrotic (damaged) heart muscle cells when there is myocardial injury, such as in acute coronary syndrome (ACS). These markers are measured in blood tests and help in the diagnosis and assessment of ACS, particularly myocardial infarction (heart attack).

Option A is incorrect because a nitroprusside stress echocardiogram is not used for acute pericarditis. It is a diagnostic test used for evaluating coronary artery disease and ischemia.

Option B is incorrect because a pathologic Q wave is not always present in the electrocardiogram (ECG) of patients with unstable angina. It is a characteristic finding in the ECG of patients with a previous myocardial infarction (heart attack) but may not be present in unstable angina.

Option D is incorrect because coronary angiography is not the only way to confirm the diagnosis of unstable angina. Unstable angina is primarily diagnosed based on the clinical presentation, symptoms, and changes in the ECG. Coronary angiography is an invasive procedure used to visualize the coronary arteries directly and is typically reserved for cases where further assessment and intervention are needed, such as in cases of suspected coronary artery disease.

The statement "I will call the clinic if my weight goes up 3 pounds in a week" indicates that the teaching about heart failure was effective. Monitoring weight is an essential self-care measure for patients with heart failure to manage fluid retention effectively. A sudden weight gain of 2-3 pounds in a week can indicate fluid retention and worsening heart failure. It is crucial for the patient to report such weight changes promptly to the healthcare provider or clinic to adjust medication doses or treatment plans as needed.

The other statements are incorrect:

A) "I will use the nitroglycerin patch whenever I have chest pain." Nitroglycerin is not typically used to manage heart failure. It is used for angina, which is chest pain caused by reduced blood flow to the heart muscle due to narrowed coronary arteries.

B) "I will take furosemide (Lasix) every day just before bedtime." While furosemide is a diuretic commonly prescribed for heart failure to reduce fluid retention, it is not usually taken just before bedtime. Taking furosemide in the evening may lead to frequent nighttime urination and disrupt sleep.

D) "I will use an additional pillow if I am short of breath at night." Using an extra pillow may provide temporary relief for positional dyspnea (shortness of breath when lying flat) but is not an appropriate long-term strategy for managing heart failure. Elevated pillows may not effectively improve breathing and can lead to neck strain. Instead, patients with heart failure should be encouraged to sleep with their head slightly elevated on a regular basis, using a wedge pillow or adjustable bed if needed. Managing fluid retention and adhering to prescribed medications are essential for improving heart failure symptoms and preventing complications.