What is the term for the abnormal collection of fluid in the pleural cavity?

Unlisted evaluation and management service. Assign the CPT code

In the H-H equation, what value can be substituted for carbonic acid?

A. PCO2 x 0.003 B. PCO2 x 0.03 C. PCO2 x 0.03 D. PCO2 x 0.03