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.
Research content: (1) Selection and placement methods of oropharyngeal ventilation tubes, studying the application effects of different models and sizes of oropharyngeal ventilation tubes in critically ill patients, exploring the best placement method to improve the efficiency and safety of sputum suction operations. (2) The norms and techniques of sputum suction, the steps, techniques, and precautions of sputum suction, the depth, strength, time of insertion, and when to interrupt negative pressure, in order to minimize damage to the patient's respiratory mucosa. (3) Evaluation of patient comfort and tolerance, assessing the tolerance and potential adverse reactions of critically ill patients during oral pharyngeal intubation for sputum suction, providing a basis for optimizing sputum suction. (4) Evaluation of sputum suction effect, comparing blood oxygen saturation, respiratory distress, sputum sounds, and other indicators before and after sputum suction to evaluate the effectiveness of sputum suction.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
SUPPORTIVE_CARE
Masking
SINGLE
Enrollment
900
(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.
(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
Affiliated Hospital of Nantong University
Nantong, Jiangsu, China
RECRUITINGBlood oxygen saturation before and after sputum aspiration
The degree of binding between oxygen and hemoglobin (Hb) in arterial blood
Time frame: Not exceeding 1 day
Suctioning time
All time required for sputum suction process
Time frame: Not exceeding 2 minute
Degree of airway bleeding
Use a disposable sputum collection device to aspirate sputum for patients and differentiate the blood content under a blue LED light.
Time frame: Not exceeding 30 minute
Patient family satisfaction
After suctioning, use a satisfaction questionnaire to survey the operating nurses, with a minimum score of 1 and a maximum score of 5. The higher the value, the higher the satisfaction.
Time frame: Not exceeding 1 day
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