Rapid and Safe Sputum Suction Method Validation

Condition(s) studied

Investigational drug(s) / intervention(s)

continuous negative pressure suction: (1) Open the mouth with a tongue depressor; (2) Apply paraffin oil to the front end of the sputum suction tube; (3) Insert a suction tube into the mouth to aspirate phlegm.

Intermittent negative pressure sputum suction through oral pharyngeal airway: (1) Insert the oropharyngeal airway parallel into the oral cavity; (2) Apply paraffin oil to the front end of the sputum suction tube; (3) The suction tube is inserted into the deep oral cavity through the middle lumen of the oropharyngeal airway; (4) Intermittent negative pressure for suction and suction of sputum

Study summary

600 comatose patients admitted to the hospital in China from June 2024 to June 2028 were randomly divided into groups A and B. Group A used intermittent negative pressure suction through oral and pharyngeal ventilation, while group B used continuous negative pressure suction through regular oral and nasal suction.

Eligibility

Primary outcome measure(s)

• Blood oxygen saturation before and after sputum aspiration — Not exceeding 1 day
  The degree of binding between oxygen and hemoglobin (Hb) in arterial blood
• Suctioning time — Not exceeding 2 minute
  All time required for sputum suction process
• Degree of airway bleeding — Not exceeding 30 minute
  Use a disposable sputum collection device to aspirate sputum for patients and differentiate the blood content under a blue LED light.

Trial sites (1)

More Affiliated Hospital of Nantong University trials in China