When insufflator pressure is equal to or greater than the preset pressure, which is the most likely cause?

When insufflator pressure is equal to or greater than the preset pressure, which is the most likely cause?

• A. Inspect abdomen for rhythmic muscle contraction and palpate the abdomen for firmness
• B. The patient may not be adequately relaxed or there is a mechanical block of gas flow
• C. Check port valves to make sure they are open
• D. Check for kinks in tubing and make sure no one is standing on them

Answer: (B)

When the insufflator hits the preset pressure and cannot rise higher, it usually means the system is meeting resistance either from the patient or from the gas delivery path. The most likely causes are that the patient isn’t adequately relaxed, leading to high abdominal wall tone, or there is a mechanical block of gas flow, such as a kink, closed valve, or obstruction in the tubing or ports. If the issue is patient-related, improving the depth of muscle relaxation or anesthesia can allow the abdomen to be more compliant and the pressure to rise as needed. If the issue is mechanical, inspecting and clearing the gas line, ports, and valves to remove any blockages will restore flow. The other checks—looking for abdominal muscle contractions or palpating firmness, or focusing on a single component like a valve or a kink—are narrower and do not address both primary possibilities as effectively.

When the insufflator hits the preset pressure and cannot rise higher, it usually means the system is meeting resistance either from the patient or from the gas delivery path. The most likely causes are that the patient isn’t adequately relaxed, leading to high abdominal wall tone, or there is a mechanical block of gas flow, such as a kink, closed valve, or obstruction in the tubing or ports. If the issue is patient-related, improving the depth of muscle relaxation or anesthesia can allow the abdomen to be more compliant and the pressure to rise as needed. If the issue is mechanical, inspecting and clearing the gas line, ports, and valves to remove any blockages will restore flow. The other checks—looking for abdominal muscle contractions or palpating firmness, or focusing on a single component like a valve or a kink—are narrower and do not address both primary possibilities as effectively.