Long-term Impact of Maxillomandibular Advancement Osteotomy on Sleep Apnea Patients

Study Overview
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Brief Summary
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Background Maxillomandibular advancement surgery (MMA) has demonstrated high success rates, improving both the apnea-hypopnea index and associated patient' quality of life (QOL), in patients diagnosed with obstructive sleep apnea syndrome (OSAS). However, clinical relapse has been described in the target population, especially when associated with significant weight gain. Literature reporting the long-term impact of MMA for OSAS is lacking. The surgeons of the Division of Maxillofacial Surgery already started to perform this type of surgery in 1995. Objectives The investigators aim to evaluate the long-term (minimum 15 years post-surgery) biologic and QOL impact of MMA in patients with OSAS. The biologic impact refers to the stability of hard and soft tissues and polysomnographic results. Study design Retrospective study Both pre- en postoperative clinical imaging, polysomnography and quality of life questionnaires will be retrieved from all patients that were surgically treated with an MMA by one surgeon (CDC) between 01/11/1995 and 01/12/1999. Conclusion Short-term data have shown high success rates for MMA in OSAS patients. However, long-term data are lacking. This retrospective study might provide us with more information about the incidence of clinical relapse fifteen to twenty years after surgery.

Official Title
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Evaluation of the Long-term Impact of Maxillomandibular Advancement Osteotomy on Patients With Obstructive Sleep Apnea Syndrome

Conditions
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Obstructive Sleep Apnea

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: clinically confirmed diagnosis of OSAS treated with an MMA between 01/11/1995 and 01/12/1999 by one surgeon (CDC) Exclusion Criteria: not following abovementioned criteria
Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| apnea-hypopnea index, as determined through polysomnography |  | minimum 15 years postoperative | 
| oxygen saturation values, as determined through polysomnography |  | minimum 15 years postoperative | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| evolution of patient quality of life, through Epworth Sleepiness Scale |  | preoperative | 
| Stability of hard and soft head and neck tissue, according to manual anthropometry |  | min 15 years postoperative | 
| Evolution of apnea-hypopnea index, as determined through polysomnography |  | preoperative | 
| Evolution of apnea-hypopnea index, as determined through polysomnography |  | immediately postoperative | 
| oxygen saturation values, as determined through polysomnography |  | preoperative | 
| oxygen saturation values, as determined through polysomnography |  | immediately postoperative | 
| evolution of patient quality of life, through Epworth Sleepiness Scale |  | immediately postoperative | 
| evolution of patient quality of life, through Epworth Sleepiness Scale |  | minimum 15 years postoperative | 
| evolution of patient quality of life, through OSAS questionnaire |  | preoperative | 
| evolution of patient quality of life, through OSAS questionnaire |  | immediately postoperative | 
| evolution of patient quality of life, through OSAS questionnaire |  | minimum 15 years postoperative | 
| evaluation of hard and soft head and neck tissue, according to cone-beam CT imaging |  | minimum 15 years postoperative | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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quality of life, polysomnographic measurements, skeletal stability, maxillomandibular advancement osteotomy, long-term results