A patient with a history of atrial fibrillation has contacted the clinic saying that she has accidentally overdosed on her prescribed warfarin (Coumadin). The nurse should recognize the possible need for what antidote?

A. The development of chronic obstructive pulmonary disease (COPD)

Explanation: The signs and symptoms described, including crackles, orthopnea, S3 heart sound, cough with pink, frothy sputum, and low pulse oximetry, are more indicative of heart failure than COPD.

B. The development of left-sided heart failure

Explanation: This is the correct answer. The signs and symptoms, such as crackles, orthopnea, and cough with pink, frothy sputum, are characteristic of left-sided heart failure. The S3 heart sound is often associated with increased ventricular filling pressures.

C. The development of right-sided heart failure

Explanation: The presented signs and symptoms are more consistent with left-sided heart failure. Right-sided heart failure is often associated with peripheral edema, hepatomegaly, and jugular venous distension.

D. The development of cor pulmonale

Explanation: Cor pulmonale is typically associated with right-sided heart failure due to chronic lung disease. The signs and symptoms described are more indicative of left-sided heart failure.

A. To ensure long-term prevention of asthma exacerbations:

This statement is not accurate. Prednisone is typically not used for long-term prevention of asthma exacerbations. It is more commonly prescribed for short-term use during acute exacerbations to quickly reduce inflammation and improve symptoms.

B. To gain control of inadequately controlled, persistent asthma:

This is the most accurate explanation. Prednisone is often prescribed to gain control over inadequately controlled, persistent asthma by providing anti-inflammatory effects and helping to manage symptoms during acute episodes.

C. To cure any systemic infection underlying asthma attacks:

Prednisone is not used to cure infections. While it can have anti-inflammatory and immunosuppressive effects, its primary role in asthma is to reduce airway inflammation and control symptoms, not to treat underlying infections.

D. To prevent recurrent pulmonary infections:

Prednisone is not typically prescribed for the prevention of infections. Its use in asthma is more focused on managing inflammation and symptoms during acute exacerbations rather than preventing infections.