A nurse is providing care for a client who experienced a myocardial infarction prior to a cardiac arrest. Which of the following laboratory tests will identify early injury to the cardiac muscle?

A. Encouraging increased mobility: While mobility is important for overall health, it may not be the primary lifestyle modification emphasized in the discharge teaching for heart failure. The focus is typically on dietary and fluid restrictions, medication adherence, and symptom management.

B. Dietary and fluid restrictions: Dietary and fluid restrictions are essential lifestyle modifications for managing heart failure. Clients are often advised to follow a low-sodium diet and restrict fluid intake to prevent fluid retention and exacerbation of heart failure symptoms.

C. Cessation of intravenous (IV) drug use: While cessation of intravenous drug use is important for overall health and may be addressed if relevant to the client's situation, it may not be a primary focus of discharge teaching specifically related to heart failure.

D. Cessation of hormonal supplements: Cessation of hormonal supplements may be recommended if they contribute to heart failure or exacerbate its symptoms. However, this recommendation would be specific to individual client circumstances and may not apply to all clients with heart failure.

Pantoprazole: Pantoprazole is a proton pump inhibitor commonly used to reduce stomach acid production. It is primarily indicated for the treatment of gastroesophageal reflux disease (GERD), peptic ulcers, and other conditions related to excessive stomach acid production. It does not play a role in managing Meniere's disease, which is a disorder of the inner ear characterized by episodes of vertigo, tinnitus, and hearing loss.

B) Warfarin: Warfarin is an anticoagulant medication used to prevent blood clot formation. It is commonly prescribed for conditions such as atrial fibrillation, deep vein thrombosis, and pulmonary embolism. Meniere's disease does not typically require anticoagulant therapy, so warfarin would not be indicated for its treatment.

C) Furosemide: Furosemide is a loop diuretic that helps reduce fluid retention by increasing urine output. In some cases of Meniere's disease, especially those associated with excessive endolymphatic fluid buildup in the inner ear, furosemide may be prescribed to help reduce fluid volume and alleviate symptoms such as vertigo and pressure sensation in the ear.

D) Oxybutynin: Oxybutynin is an anticholinergic medication primarily used to treat overactive bladder and urinary incontinence. It works by relaxing smooth muscle in the bladder, reducing bladder spasms and urinary urgency. While some individuals with Meniere's disease may experience associated symptoms such as frequent urination or urinary urgency, oxybutynin is not a standard treatment for Meniere's disease itself.