To prevent loss of pneumoperitoneum during suctioning, where should the suction tip be kept?

To prevent loss of pneumoperitoneum during suctioning, where should the suction tip be kept?

• A. Keep suction tip above the fluid level
• B. Keep suction tip below the fluid level
• C. Keep suction tip at the fluid surface
• D. Keep suction tip away from the surgical field

Answer: (B)

Maintaining pneumoperitoneum during suctioning relies on directing suction to liquid rather than pulling out the gas inside the abdomen. Keeping the suction tip below the fluid level ensures you are evacuating fluid from the dependent portion of the cavity while the CO2 gas above the liquid stays in place, so the intraperitoneal pressure is preserved. If the tip is above the fluid, the suction will suck out gas and the pneumoperitoneum can be lost; at the fluid surface, gas and liquid are both entrained, increasing the risk of gas loss. So the best practice is to keep the suction tip below the fluid level.

Maintaining pneumoperitoneum during suctioning relies on directing suction to liquid rather than pulling out the gas inside the abdomen. Keeping the suction tip below the fluid level ensures you are evacuating fluid from the dependent portion of the cavity while the CO2 gas above the liquid stays in place, so the intraperitoneal pressure is preserved. If the tip is above the fluid, the suction will suck out gas and the pneumoperitoneum can be lost; at the fluid surface, gas and liquid are both entrained, increasing the risk of gas loss. So the best practice is to keep the suction tip below the fluid level.