What should the nurse do first if an NG tube connected to low intermittent suction is not draining properly?

The first action a nurse should take when an NG tube connected to low intermittent suction is not draining properly is to check the suction device to ensure it is working. This step is critical because if the suction device is malfunctioning, the NG tube will not function as intended, regardless of its placement or patency. Ensuring the suction is operational is the most immediate way to determine if the issue lies with the equipment itself.

If the suction device is not functioning, addressing that problem will often resolve the drainage issue without the need for further interventions, such as repositioning the tube or irrigating it. This systematic approach emphasizes checking the simplest and most obvious possibilities first, which is a fundamental principle in patient care to ensure effectiveness and efficiency in handling potential complications.

Other options such as repositioning the NG tube or irrigating it may be necessary later on if the suction device is confirmed to be functioning correctly. However, these steps would then address the next layers of potential issues after confirming that the suction device itself is operational.