Sam Sands had an open dilation of the right lacrimal duct using an intraluminal device. The code for this procedure is ____________________

Venous insufficiency ulcers are ultimately caused by:

A. insufficient numbers of veins. B. white blood cells. C. venous hypertension. D. a hyperactive calf muscle pump.

Which of the following terms is not synonymous with the others?

A. Rate B. Ratio C. Average D. Proportion