Which of the Following Statements Are True of PCWP

Multiple Choice

Which of the following statements are true of PCWP?
I.Normally its force is 6 to 12 mm Hg.
II.When the PCWP rises above 18 mm Hg, early clinical signs of pulmonary edema appear on the chest x-ray image.
III.Above 25 mm Hg the chest x-ray film shows obvious evidence of pulmonary edema.
IV.PCWP is a valuable clinical tool for monitoring the effects of intravenous fluid infusions in hemodynamically unstable patients.

A) I, II, III
B) I, III
C) II, III, IV
D) I, II, III, IV