What are the precautions for inserting a suction catheter through the throat?

Precautions regarding inserting the suction catheter through the throat generally include disinfection of the suction tube, selection of an appropriate suction catheter, and checking the airtightness of the suction device. The details are as follows:

1. Suction Tube Disinfection

Suction devices primarily use negative pressure generated by the machine to remove sputum from patients' bodies and are mainly suitable for individuals unable to expel sputum on their own, preventing breathing difficulties. Before operation, both the inner and outer surfaces of the suction catheter must be disinfected to avoid introducing external bacteria into the patient's body, which could lead to bacterial overgrowth and subsequent infection.

2. Selection of Suction Catheter

Due to differences in patients' physiological structures, the choice of suction catheter varies accordingly. An appropriate catheter should be selected based on the patient’s specific condition to prevent using one that is too thick—making it difficult to insert into the throat—or too thin, which may increase resistance and render suction ineffective.

3. Checking Airtightness of the Suction Device

If the suction device is not properly sealed and leaks occur, sufficient negative pressure may not be generated, making it impossible to effectively aspirate sputum. Therefore, the airtightness of the suction device should be checked before use.

In addition, attention should also be paid to the patient’s body position, the speed at which the suction catheter is inserted, and the insertion technique. During the procedure, gentle movements are recommended to avoid damaging the throat.