An enlargement of the thyroid gland may be referred to as:

Which of the following best defines an established problem?

a. A patient's presenting problem that has already been diagnosed by the performing physician and has become worse b. When the performing physician orders specific laboratory, pathology, or diagnostic tests for the purpose of identifying the differential diagnosis of the undiagnosed new presenting problem c. A patient's presenting problem that has already been diagnosed by the performing physician and has remained stable or shows improvement d. A patient's presenting problem that has already been diagnosed by the performing physician

During coronary artery bypass surgery, the surgeon occludes the ascending aorta and inserts the indwelling catheter for infusion of ____________

A. cardioplegic solution and venting of air B. heparin solution and injection of air