An observational study in Fibromyalgia Syndrome and Obstructive Sleep Apnea Syndrome, sponsored by Kirsehir Ahi Evran Universitesi. Completed at 1 site in Turkey (Türkiye). Open to female participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2026-08-10.
Sponsored by Kirsehir Ahi Evran Universitesi · Observational
Obstructive type sleep apnea syndrome is a clinical condition characterized by apnea, hypopnea and oxygen desaturation due to narrowing of the upper airway during sleep. Obesity is considered a major predisposing factor for OSAS. In addition, various recent studies have reported that various anthropometric measurements such as neck circumference, waist circumference, hip circumference, waist-hip ratio, neck-waist circumference ratio change (increase) in OSAS patients.
Fibromyalgia is a common health problem that is characterized by pain in various parts of the body and is very difficult to diagnose and treat. It affects 2-4% of the population and is more common in women. The presence of OSAS in fibromyalgia patients is more common than in the normal population. There are also common additional symptoms such as excessive daytime sleepiness and delayed sleep latency.
Although it has been reported that the presence of OSAS is more common in fibromyalgia patients, there is no study on the presence of anthropometric measurements, especially neck circumference, that are accepted in OSAS.
The aim of this study is to compare the anthropometric and ultrasonographic measurements of female OSAS patients with and without fibromyalgia.
1,338 studies on the registry are indexed under Fibromyalgia; 268 are open to participants now.
This study's enrollment of 77 is below the median of 100 across 270 observational studies indexed under Fibromyalgia.
Browse Fibromyalgia studies →Kirsehir Ahi Evran Universitesi is the lead sponsor of 133 studies on the registry; 55 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Female patients diagnosed with fibromyalgia who applied to the sleep disorders outpatient clinic operating within the Department of Neurology and underwent polysomnography with sleep problems, as well as patients diagnosed with OSAS, will be included.
Exclusion Criteria:
Fibromyalgia patients who were diagnosed with OSAS as a result of polysomnographic examination
Fibromyalgia patients who were not diagnosed with OSAS as a result of polysomnographic examination
Patients diagnosed with OSAS as a result of polysomnographic examination and without fibromyalgia
Anthropometric Measurements
Anthropometric measurements will be taken for all patients. These measurements include neck circumference, waist circumference, hip circumference, and with these data, waist-hip ratio and neck-waist circumference ratio will be calculated. Measurements will be made with a tape measure and with patient consent.
Time frame: Day 0 ( Baseline)
Polisomnografi- SLEEP LATENCE
Sleep latency time will be measured in polysomnography
Time frame: Day 0 ( Baseline)
Polisomnografi -SLEEP ACTIVITY
Sleep efficiency will be measured during polysomnography
Time frame: Day 0 ( Baseline)
Polisomnografi -REM time
REM time will be measured in minutes during polysomnography
Time frame: Day 0 ( Baseline)
Polisomnografi -NREM STAGES
During polysomnography, NREM stages will be measured at 1 min, 2 min, and 3 min.
Time frame: Day 0 ( Baseline)
Polisomnografi - NUMBERS OF APNE
Numbers of apnea will be recorded in polysomnographic measurements.
Time frame: Day 0 ( Baseline)
Polisomnografi -NUMBER OF HYPOPNEA
Numbers of hypopnea will be recorded in polysomnographic measurements
Time frame: Day 0 ( Baseline)
Polisomnografi -Apnea hypopnea index (AHI) in polysomnography; Apnea hypopnea index (AHI) will be evaluated on a supine, non-supine basis.
Apnea hypopnea index (AHI) will be evaluated in polysomnography.According to the AHI level; It will be classified as SIMPLE SNORING (AHİ\<5), LIGHT OSAS (AHİ 5-15), MEDIUM OSAS (AHİ 15-30), HEAVY OSAS (AHİ 30+ )
Time frame: Day 0 ( Baseline)
Polisomnografi-REM
REM times will be evaluated in polysomnography
Time frame: Day 0 ( Baseline)
Polisomnografi-NonREM
NonREM times will be evaluated in polysomnography
Time frame: Day 0 ( Baseline)
Polisomnografi -Apnea hypopnea index (AHI) REM, NONREM in polysomnography; Apnea hypopnea index (AHI) will be evaluated on a supine, non-supine basis.
Apnea hypopnea index (AHI) will be evaluated as REM, NONREM, Supine, non-supine in polysomnography.According to the AHI level; It will be classified as SIMPLE SNORING (AHİ\<5), LIGHT OSAS (AHİ 5-15), MEDIUM OSAS (AHİ 15-30), HEAVY OSAS (AHİ 30+ )
Time frame: Day 0 ( Baseline)
Polisomnografi -OXYGEN DESATURATION INDEX
Minimum oxygen saturation and average oxygen saturation will be measured in polysomnography.
Time frame: Day 0 ( Baseline)
submental ultrasonography
All patients will undergo submental ultrasonography to measure tongue base thickness and lateral pharyngeal wall thickness.
Time frame: Day 0 ( Baseline)
Pittsburgh Sleep Quality Index
The Pittsburgh Sleep Quality Index will be used to evaluate sleep quality. The survey consists of 21 questions and a high score indicates poor sleep quality.
Time frame: Day 0 ( Baseline)
Fibromyalgia Impact Scale
The fibromyalgia levels of the participants will be evaluated with the Fibromyalgia Impact Scale. High scores indicate increased disease activity. Consists of 10 questions Maximum score is 80. Turkish validity and reliability was done
Time frame: Day 0 ( Baseline)
Plan to share: Undecided
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Kirsehir Ahi Evran Universitesi