Diagnostic flexible sigmoidoscopy with specimen collection by brushing

Which of the following pathogens can lie dormant in the body but reemerge under times of stress?

A) Hepatitis B) Fungi C) Giardia lamblia D) Herpes viruses

Calculate the static compliance (CS), in mL/cm H2O, when PIP is 47 cm H2O, plateau pressure (Pplateau) is 27 cm H2O, baseline pressure is 10 cm H2O, and exhaled tidal volume (VT) is 725 mL

a. 43 CS b. 36 CS c. 20 CS d. 0.065 CS