A nurse is caring for a client who is developing signs of hemorrhage after 5 days of continuous warfarin use. Which of the following labs should the nurse utilize to determine the medication's current therapeutic level?

Rationale:

A. A transesophageal echocardiogram (TEE) is a specialized echocardiographic procedure that provides detailed images of the heart, including the atria and ventricles. It is particularly useful for detecting ventricular thrombi (blood clots) that may not be visualized as well with transthoracic echocardiography.

B. While an echocardiogram can provide information about heart function, including conduction problems, a TEE is not typically used specifically for this purpose.

C. Exercise tolerance is typically assessed through exercise stress testing or other exercise- related procedures, not with a TEE.

D. Blood flow to the distal extremities is not directly assessed with a TEE. This procedure primarily focuses on evaluating cardiac structure and function.

Rationale:

A. Deep vein thrombosis typically presents with symptoms such as leg swelling, pain, warmth, and redness, but not necessarily with cramping leg pain that is relieved with rest.

B. Intermittent claudication is a classic symptom of peripheral arterial disease, characterized by cramping leg pain that occurs with exercise and is relieved with rest.

C. Venous insufficiency presents with symptoms such as leg swelling, varicose veins, and aching or heaviness in the legs, but not necessarily with cramping leg pain that is relieved with rest.

D. Neuropathy may cause various sensory symptoms in the legs, such as numbness, tingling, or burning, but it is not typically associated with cramping leg pain that is relieved with rest.