A patient receiving volume-controlled ventilation has thick secretions that are difficult to suction. The patient has an 8.0-mm oral endotracheal tube and is being suctioned with a 10 Fr catheter at a pressure of 100 mmHg. Which of the following would be most helpful in increasing the efficiency of suctioning?

A. Increase suction pressure to 120 mmHg
B. Increase suction time and frequency
C. Switch to a 12 Fr suction catheter
D. Increase suction pressure to 110 mmHg

Switching to a 12 Fr suction catheter is the most effective way to enhance suction efficiency for a patient with thick secretions while avoiding potential mucosal damage.

Explanation:

The most effective method to increase the efficiency of suctioning for a patient with thick secretions on volume-controlled ventilation is to switch to a 12 Fr suction catheter.

Using too high a suction pressure, such as 120 mmHg or 110 mmHg, can cause trauma to the mucosal lining. Therefore, increasing suction time and frequency may also risk damage.

A larger-diameter catheter, such as the 12 Fr, would allow for more efficient removal of thicker secretions without needing to excessively increase the suction pressure or frequency, which aligns with safer patient care protocols.