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OSA Risk Level in Dental Patients and Correlation With Complications After General Anesthesia

Key facts

Who runs it
Kırıkkale University
Where
Kayseri and Kirikkale, TürkiyeSee the 2 sites
Trial code
Status
Recruiting
People taking part
240 people, planned
Started
28 Jun 2024
Planned end
Aug 2026
Type of study
Observational, 7 groups
Treatments tested
  • The STOP-BANG questionnaire for determining OSA risk level.
  • ASA recommended criteria for determining OSA risk level.
  • Record of postoperative complications
Record updated
20 March 2026

Who can take part

Age
18 years to 80 years
Sex
Women and men
Healthy volunteers
Cannot take part

The registry criteria, word for word

Show all 5 criteriaShow less

Who can take part

  • Patients between 18-80 years of age who apply to the anesthesia clinic for dental procedures planned to be performed under general anesthesia
  • Patients without a previous diagnosis of OSA

Who cannot take part

  • Patients previously diagnosed with OSA
  • Necessity of emergency surgery
  • Individuals who do not want to participate in the study

Check if you might fit

Answer for yourself. This is not a decision: only the study team can say whether you can take part.

  • Are you between 18 and 80 years old?

Where in Türkiye

  • Erciyes University Faculty of DentistryKayseri, TürkiyeContact: Dilek Günay CanpolatTaking people
  • Kırıkkale University Faculty of DentistryKirikkale, TürkiyeContact: Gözde Nur ErkanTaking people

About the trial

What the trial wants to find out

Obstructive sleep apnea (OSA) is a sleep-related respiratory dysfunction. The prevalence of OSA is increasing with the increasing rates of obesity and elderly population worldwide. Perioperative anesthesia management should be adjusted to improve patient safety in patients with OSA. In OSA patients, positive pressure ventilation support may be required in the preoperative period, various ventilation strategies may be required in the intraoperative period, different pharmacologic agents may need to be avoided, and intensive care unit follow-up or noninvasive ventilation support may be required in the postoperative period. However, it is reported that a significant percentage of OSA patients remain undiagnosed. ASA (American Society of Anesthesiologists) has reported the criteria that should be questioned in order to determine the risk of patients in terms of OSA and to initiate the diagnostic process in risky patients and to make appropriate anesthesiologic arrangements in the perioperative period. In addition, the STOP-BANG assessment scale, which is widely used all over the world in OSA risk assessment, is also used in OSA risk assessment. It is thought that dental caries and extraction needs may be higher in OSA patients, especially since open-mouth sleeping accompanies the situation. In this respect, it is also important for patients to be diagnosed with OSA as it may prevent dental damage due to open-mouth sleeping in the future. Identifying patients at risk for OSA and directing them to the diagnostic process is very important for patient safety. Within the scope of the study, the criteria recommended by ASA and STOP-BANG score will be evaluated and recorded. Risk stratification in terms of STOP-BANG questionnaire and ASA criteria will be done separately for each patient and for each classification method. Patients at high risk will be consulted to the relevant medical department in the preoperative period for further investigation and treatment. In addition, it is aimed to correlate the risk levels determined in the study with postoperative respiratory complications and recovery time.

The 7 groups in the trial

  • Group lowSTOP-B

    Study group including patients in the low-risk group in the assessment to be made with STOP-BANG questionnaire.

    Treatment: The STOP-BANG questionnaire for determining OSA risk level. and Record of postoperative complications

  • Group intermediateSTOP-B

    Study group including patients in the medium-risk group in the assessment to be made with STOP-BANG questionnaire.

    Treatment: The STOP-BANG questionnaire for determining OSA risk level. and Record of postoperative complications

  • Group highSTOP-B

    Study group including patients in the high-risk group in the assessment to be made with STOP-BANG questionnaire.

    Treatment: The STOP-BANG questionnaire for determining OSA risk level. and Record of postoperative complications

  • Group noneASA

    The study group that includes patients who are not at risk for OSA in the evaluation with the criteria recommended by the ASA.

    Treatment: ASA recommended criteria for determining OSA risk level. and Record of postoperative complications

  • Group mildASA

    Study group including patients in the mild-risk group for OSA in the evaluation with the criteria recommended by the ASA.

    Treatment: ASA recommended criteria for determining OSA risk level. and Record of postoperative complications

  • Group moderateASA

    Study group including patients in the moderate-risk group for OSA in the evaluation with the criteria recommended by the ASA.

    Treatment: ASA recommended criteria for determining OSA risk level. and Record of postoperative complications

  • Group severeASA

    Study group including patients in the severe-risk group for OSA in the evaluation with the criteria recommended by the ASA.

    Treatment: ASA recommended criteria for determining OSA risk level. and Record of postoperative complications

Questions to ask the study team

  1. How often do I need to come in, and for how long each time?
  2. Are travel costs paid?
  3. Can I keep my own doctor?
  4. What happens if I want to stop?

Contact the study team: see the registry record → Contacts and Locations

Print a page for my doctor

Data and sources

Registry record
Listed on ClinicalTrials.gov.
Official title
Evaluation of OSA Risk Levels in the Preoperative Period of Adult Patients With Planned Dental Procedures Under Anesthesia and Correlation With Postoperative Complications; A Multicenter Study
Fit questions
Built from NCT06430957, who can take part
Record updated
20 March 2026