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

NCT06430957 | Recruiting

• 1 other identifier: KU-ERKAN-002
• Study Type: observational
• Target: 240
• Locations: 1 country
• Sites: 2

Brief Summary

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.

Conditions

Postoperative Complications; Dental Caries Under General Anesthesia; Obstructive Sleep Apnea of Adult; Obstructive Sleep Apnea Risk Management

Outcome Measures

Primary Outcomes (4)

• Determination of OSA risk levels of patients

  The STOP-BANG questionnaire and the criteria recommended by the ASA, which are recommended to be used routinely worldwide to determine OSA risk level, will be questioned in each patient. Patients with moderate and high risk scores from the STOP-BANG questionnaire and patients with significant OSA risk level according to ASA criteria will be referred to the pulmonology department and further evaluation will be requested. If deemed necessary by the Pulmonology department, a sleep test will be performed. With the sleep test result, the OSA risk level of the patients will be classified as none, mild, moderate and severe in terms of ASA criteria.

  Preoperative period

• Postoperative respiratory complications

  Respiratory complications including laryngospasm/bronchospasm, apnea, hypoxia that may develop in the postoperative period in patients, the duration of the need for additional oxygen support above the expected duration will be observed and recorded.

  For 4 hours after the end of surgery

• Follow-up of indicators of airway obstruction

  As indicators of airway obstruction; snoring/whistling respiration, hypertension and intercostal/sternal retractions will be observed and recorded in the study follow-up form.

  For 4 hours after the end of surgery

• Duration of recovery

  Duration of recovery (modified aldrete score of 9 and above) will be recorded

  For 30 minutes after the end of surgery

Secondary Outcomes (1)

• Comparison of the effectiveness of STOP-BANG questionnaire and ASA criteria in determining OSA risk level

  Perioperative period

Study Arms (7)

Group lowSTOP-B

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

Other: The STOP-BANG questionnaire for determining OSA risk level.; Other: 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.

Other: The STOP-BANG questionnaire for determining OSA risk level.; Other: 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.

Other: The STOP-BANG questionnaire for determining OSA risk level.; Other: 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.

Other: ASA recommended criteria for determining OSA risk level.; Other: 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.

Other: ASA recommended criteria for determining OSA risk level.; Other: 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.

Other: ASA recommended criteria for determining OSA risk level.; Other: 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.

Other: ASA recommended criteria for determining OSA risk level.; Other: Record of postoperative complications

Interventions

The STOP-BANG questionnaire for determining OSA risk level. OTHER

An assessment questionnaire including OSA-related physical characteristics and symptoms and signs to be questioned individually in each patient will be examined by the physician.

Group highSTOP-B; Group intermediateSTOP-B; Group lowSTOP-B

ASA recommended criteria for determining OSA risk level. OTHER

An assessment questionnaire including OSA-related physical characteristics and symptoms and signs to be questioned individually in each patient will be examined by the physician.

Group mildASA; Group moderateASA; Group noneASA; Group severeASA

Record of postoperative complications OTHER

Respiratory complications as laryngospasm/bronchospasm, apnea, hypoxia, duration and amount of need for additional oxygen support and recovery time (duration of modified aldrete score of 9 and above) will be recorded.

Group highSTOP-B; Group intermediateSTOP-B; Group lowSTOP-B; Group mildASA; Group moderateASA; Group noneASA; Group severeASA

Eligibility Criteria

• Age: 18 Years - 80 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

Patients between the ages of 18-80 years who applied to the anesthesia clinic for dental procedures planned to be performed under general anesthesia and who had no previous diagnosis of OSA.

You may qualify if:

• 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

You may not qualify if:

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

Sponsors & Collaborators

• Kırıkkale University: lead
• TC Erciyes University: collaborator

Study Sites (2)

Erciyes University Faculty of Dentistry

Kayseri, Turkey (Türkiye)

RECRUITING

Kırıkkale University Faculty of Dentistry

Kırıkkale, Turkey (Türkiye)

RECRUITING

MeSH Terms

Conditions

Postoperative Complications

Condition Hierarchy (Ancestors)

Pathologic Processes; Pathological Conditions, Signs and Symptoms

Central Study Contacts

Gözde Nur Erkan, Asst. Prof.

CONTACT

+905054334692; dr.gozdenur@gmail.com

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Assistant Professor Doctor, Medical Doctor

Study Record Dates

• First Submitted: May 14, 2024
• First Posted: May 28, 2024
• Study Start: June 28, 2024
• Primary Completion (Estimated): August 1, 2026
• Study Completion (Estimated): August 1, 2026
• Last Updated: March 20, 2026

Record last verified: 2025-08

Locations

TU (2)