Which of the Following Tests Should Be Part of the Pre-Operative

Which of the following tests should be part of the pre-operative examination of patients who will be undergoing cardiac surgery?

A) Serum urea and creatinine levels, electrocardiogram, echocardiogram
B) Electrocardiogram, echocardiogram, chest x-ray, serum electrolytes
C) Serum potassium level, prothrombin time, hematocrit, and serum creatinine level
D) Serum potassium level, prothrombin time, hematocrit, serum creatinine level, electrocardiogram, echocardiogram and a chest x-ray