To explore the evaluation of the application effect of disposable non-injurious sputum suction tube in emergency and critically-ill patients in sputum suction and airway mucosal protection.

From June 2024 to December 2024, critically-ill patients hospitalized in the emergency department of Mentougou Hospital affiliated to Beijing Tongren Hospital, were selected as study subjects. The patients were randomly assigned to a control group and an experimental group. The patients in the control group were suctioned with an ordinary sputum suction tube, and the patients in the experimental group were suctioned by an innovatively designed disposable non-damaging sputum suction tube, which was a one-time non-damage sputum suction tube, that is, the head end of the sputum suction tube was designed in the shape of an elephant trunk, and several arc protrusions were added around the opening of the suction tip and the side hole. After sputum aspiration treatment, the sputum suction effect per unit time and the condition of airway mucosal injury were compared between the two groups.

The increase in peripheral capillary oxygen saturation (SpO2) per unit time and the amount of sputum suction per unit time in the experimental group were significantly higher than those in the control group after sputum aspiration treatment, and the difference was statistically significant (P<0.05). The number of bloody sputum and injured cells was significantly lower than that of the control group (P<0.05), but there was no significant difference in the improvement of sputum sound (P>0.05).

The one-time non-injurious sputum suction tube has a good sputum suction effect, which can effectively prevent airway mucosal injury in patients, and has strong application value in clinical practice.