This study will examine whether training the anesthesia team in a loss-of-resistance syringe technique is associated with improved breathing-tube cuff pressure in adults having surgery at Kayseri City Hospital. The cuff is an inflatable seal around the breathing tube. Pressure that is too high or too low may cause problems.
Approximately 180 adults will be observed during a two-week period before staff training and a two-week period after training. The treating clinical team will independently choose how to inflate each cuff as part of routine care; researchers will not assign patients to a technique. A researcher independent of the treating team will measure cuff pressure and will learn which technique was used only after the measurement.
The main outcome is the percentage of patients whose first measured cuff pressure is within 20-30 cmH2O, compared between the periods before and after training. Pressures outside this range will be corrected for patient safety after the first measurement is recorded. Researchers will also record cuff leakage, the need for additional air, and sore throat after the breathing tube is removed, once the patient is awake and able to answer questions.
Eligibility
Sex
ALL
Min age
18 Years
Max age
—
Healthy volunteers
No
Inclusion Criteria:
* Age 18 years or older.
* Undergoing general anesthesia with endotracheal intubation in the operating rooms of Kayseri City Hospital.
* Able to communicate and undergo postoperative pain assessment.
* Only the first surgical procedure for each patient is included.
Exclusion Criteria:
* Neurological, psychiatric or cognitive impairment preventing communication.
* Surgery that may independently affect postoperative sore throat, such as ear, nose and throat surgery or upper gastrointestinal surgery.
* Three or more laryngoscopy attempts during intubation.
* Nasotracheal intubation.
* Use of a double-lumen endotracheal tube.
* Intubation lasting longer than three hours.
Primary outcome measure(s)
Proportion of Patients With Initial Endotracheal Tube Cuff Pressure Within 20-30 cmH2O — Immediately after endotracheal intubation and initial cuff inflation, before corrective pressure adjustment, during the index surgical procedure. Percentage of patients whose initial endotracheal tube cuff pressure, measured with a cuff manometer after intubation and initial cuff inflation and before any corrective adjustment, is between 20 and 30 cmH2O inclusive. The proportion will be compared between the pre-training and post-training cohorts. Measurements are performed by researchers independent of the clinical team, who learn the cuff inflation technique only after recording cuff pressure. This binary outcome is the basis of the sample-size calculation.
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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