Finish the common compounding saying, "If it hasn't been documented, __________"

The term referring to four or five digits representing before and after category descriptors is:

a. block. b. category. c. subcategory. d. code.

In which of the following situations is pressure-controlled ventilation sometimes used?

1. When a precise PaCO2 has to be maintained (some closed-head injuries) 2. When more even distribution of ventilation is required 3. When ventilating patients with severe, refractory hypoxemia 4. When tidal volume in unstable due to leaks a. 1 and 2 only b. 3 and 4 only c. 1, 2, and 3 only d. 1, 3, and 4 only