During time-cycled, pressure-controlled ventilation, which of the following must be known to calculate tidal volume?

You are called for a women who is about to deliver. During the labor process, your patient's water breaks. She experiences a rush of warm water and an increase in uterine contractions. The purpose of the amniotic fluid is to:

A) allow the fetus to float during development. B) help maintain a constant fetal body temperature. C) provide lubrication during the delivery of the baby. D) All of the above

A ____ is a three-digit code in the ICD-9-CM manual that represents a single disease or a group of closely related conditions.

A. section B. category C. subcategory D. subclassification