When obtaining a PAOP, the nurse meets no resistance and observes that the PA waveform does not change to a PAO waveform. What action should the nurse take next?
a. Actively deflate the balloon and try again to obtain wedge pressure according to the organization's practice.
b. Continue to manipulate the balloon lumen to achieve a solid wedge waveform.
c. Advance the PA catheter 1 to 2 cm until a wedge pressure is obtained.
d. Discontinue balloon attempts and tape the inflation port closed.