Final answer:
The transesophageal echocardiogram (TEE) is used to detect blood clots in the heart before a cardioversion procedure in patients with atrial fibrillation. It provides a detailed view of the heart's structure and function.
Step-by-step explanation:
The best response by the nurse to explain the purpose of a transesophageal echocardiogram (TEE) to a client's spouse is: "This test will show any blood clots in the heart and if it is safe to do a cardioversion." A TEE involves using ultrasound technology to take images of the heart from within the esophagus, providing a closer and more detailed view of the heart's structure and function compared to a standard echocardiogram. This is especially useful in atrial fibrillation to check for the presence of blood clots in the heart before procedures like cardioversion, which refers to the restoration of a normal heart rhythm by electric shock or medication.