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. Coronary artery disease (CAD):

Coronary artery disease primarily affects the blood vessels supplying the heart muscle. Symptoms often include chest pain (angina) rather than pain in the lower extremities. The symptoms described in the scenario are not characteristic of CAD.

B. Arterial embolus:

An arterial embolus is a blood clot or debris that travels through the bloodstream and can block an artery. While it can cause decreased blood flow and pain, the presentation in the lower left leg and foot with relief of pain at rest is more suggestive of peripheral arterial disease (PAD) or intermittent claudication rather than an acute arterial embolus.

C. Raynaud disease:

Raynaud's disease is characterized by episodes of reduced blood flow to the extremities, usually triggered by cold or stress. It typically involves color changes (white, blue, red) in the fingers or toes. The symptoms described, including pain in the lower leg and foot during walking, are not typical of Raynaud's disease.

D. Intermittent claudication:

Intermittent claudication is a symptom associated with peripheral arterial disease (PAD). It involves pain or cramping in the legs during physical activity, such as walking, due to reduced blood flow to the muscles. Rest typically relieves the pain. The observation of a hairless leg and slight edema suggests potential vascular compromise in the lower extremity, supporting the diagnosis of intermittent claudication.

A. Normal sinus rhythm that becomes sinus tachycardia

Sinus tachycardia can be an indication of increased sympathetic activity in response to decreased cardiac output. It may suggest the heart's compensatory response to maintain adequate perfusion.

B. Onset of a cough with pink, frothy sputum

Pink, frothy sputum is a classic sign of pulmonary edema, which can occur in the setting of worsening heart failure. It indicates the presence of blood-tinged fluid in the alveoli.

C. Presence of dyspnea at rest

Dyspnea at rest suggests that the client is experiencing difficulty breathing even without physical exertion. This can be indicative of more severe heart failure.

D. Falls asleep when not disturbed

Falling asleep when not disturbed may indicate fatigue or exhaustion, which is common in individuals with heart failure. However, it is not a direct indicator of worsening heart failure and can be influenced by various factors.

E. Urine drainage is increased in amount

Increased urine output can be a sign of diuretic therapy or an attempt by the body to compensate for fluid overload. However, it is essential to consider other factors such as renal function and medication effects.