The nurse understands myocardial oxygen consumption increases as which of the following parameters increase? Preload, afterload and....

A. Heart failure: An anterior wall myocardial infarction (MI) often affects the left ventricle, which is responsible for pumping oxygenated blood to the body. Damage to this area can impair the heart's ability to pump effectively, leading to heart failure. Left-sided heart failure is a common complication following an anterior wall MI.

B. Ventricular dysrhythmias: The anterior wall of the left ventricle is part of the area most vulnerable to ischemic damage during an MI. This damage can disrupt the electrical conduction system of the heart, leading to ventricular dysrhythmias, which are serious and life-threatening complications, particularly following an anterior wall MI.

C. Cor pulmonale: Cor pulmonale refers to right-sided heart failure caused by chronic lung disease, such as COPD or pulmonary hypertension. It is not typically a complication of an anterior wall MI. Anterior wall MIs primarily affect left-sided heart function.

D. Increased bleeding: Increased bleeding is not a typical complication of an anterior wall MI. While patients with MI may be treated with anticoagulants, bleeding is not directly related to the myocardial infarction itself. Instead, complications like heart failure, arrhythmias, or rupture of the ventricular wall are more commonly associated with an anterior wall MI.

A. Consult for TPN orders: Total parenteral nutrition (TPN) is used for patients who cannot take in adequate nutrition orally, such as those with gastrointestinal issues or severe malnutrition. This is not an appropriate intervention for a patient with a STEMI, where immediate cardiac care is the priority.

B. Transfer him to the cardiac catheterization lab: The patient is experiencing a STEMI, which involves a complete or nearly complete blockage of a coronary artery, and the goal of treatment is to restore blood flow as quickly as possible. Primary percutaneous coronary intervention (PCI), also known as angioplasty or stenting, is the most effective way to reopen the blocked artery. Transfer to the cardiac catheterization lab should happen as soon as possible to minimize myocardial damage.

C. Prepare the patient for transvenous pacing: Transvenous pacing is typically used for patients with bradycardia or other rhythm disturbances such as heart block, which is not indicated in this case. The patient’s heart rate is elevated (HR 122), not bradycardic, and there is no evidence suggesting that pacing is necessary at this time.

D. Schedule an echocardiogram: While an echocardiogram is useful for assessing heart function, it is not a priority in the acute setting of a STEMI. The first priority is to reopen the blocked artery in order to preserve heart tissue and reduce further damage.