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Yıl:2019; Cilt: 6; Sayı: 1>> Özet
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Türk Uyku Tıbbı Dergisi; 2019;6(1):10-15
Obstrüktif Uyku Apne Sendromunda Kronik İntermitant Hipoksemi Periferik Sinir Motor Liflerde (Ünit Sayısında)Azalmaya Neden Olur
K Aslan, T Peköz, G Seydaoğlu, H Bozdemir, Y Sarıca
Çukurova Üniversitesi, Adana
Amaç: Obstrüktif Uyku Apne sendromu (OSAS) kronik tekrarlayıcı hipoksik süreçtir. Bu çalışmada OSAS tanısı ile izlenen olgularda kronik hipoksinin iskelet kası motor ünit sayısında yaptığı değişiklikler araştırıldı. Gereç ve Yöntem: Apne-hipopne indeksine (AHİ) göre hastalar 2 gruba ayrıldılar [grup 1: AHİ <15 (NK) ve grup 2: AHİ ≥15,1]. Grup 1’de 57 ve grup 2’de 62 hasta çalışmaya dahil edildi. Hastaların N. median ve N. ulnarisin motor ve duysal distal latansları, ileti hızları ve birleşik aksiyon potansiyel amplitüdleri değerlendirildi. Hastalarda submaksimal uyarımla maksimum M yanıtları elde edildikten sonra motor ünit sayıları (MUNE) Keypoint cihazındaki program ile elde edildi. Bulgular: Her iki grup arasında N. medianus, N. ulnaris motor ve duysal sinir distal latansları, maksimum M yanıt amplitüdü ve iletim hızları ortalaması arasında fark yoktu (p>0,5). N. medianusa ait maksimum M alan ortalaması grup 1’de 50,8±20,4 (16,1-121,7), grup 2’de 48,6±20,05 (10,5-111,4) saptandı (p=0,55). MUNE ortalaması grup 1’de 155,3±41,17 (46,6-251,7) ve grup 2’de 127,7±40,2 (22,8-235) (p<0,00) olarak belirlendi. Sonuç: OSAS hastalarda, MUNE yöntemi ile motor ünit sayısında anlamlı düzeyde azalma, uyku sırasında tekrarlayan kronik hipokseminin OSAS hastalarında MUNE’de azalmaya ve subklinik polinöropati için bağımsız bir risk faktörü olduğunu göstermektedir.
Chronic Intermittent Hypoxemia in Patients with Obstructive Sleep Apnea Syndrome Causes Reduction of Peripheral Nerve Motor Fibers (Unit Number)
Objective: Obstructive Sleep Apnea syndrome (OSAS) is a chronic intermittent hypoxic process. In this study, we aimed to investigate electrophysiologically the changes in number of skeletal muscle motor unit due to chronic intermittent hypoxemia in cases followed up with the diagnosis of OSAS. Materials and Methods: According to the apnea-hypopnea index (AHI), patients divided into two groups (group 1: AHI <15 and group 2: AHI =15.0). Fifty-seven patients in group 1 and 62 patients in group 2 were included in the study. Motor and sensory distal latencies, conduction velocities and combined action potential amplitudes of nervus medianus and nervus ulnaris were evaluated in patients. After obtaining maximum M responses by submaximal stimulation in the patients, motor unit numbers (MUNE) were achieved with the program in Keypoint device. Results: There were no statistical differences between the two groups in terms of nervus medianus and nervus ulnaris motor and sensory nerve distal latencies, maximum M response amplitude and mean conduction velocity (p>0.5). Maximum M mean area of nerve medianus was 50.8±20.4 (16.1-121.7) in group 1 and 48.6±20.05 (10.5-111.4) in group 2 (p=0.55). The mean MUNE values were 155.3±41.17 (46.6- 251.7) in group 1 and 127.7±40.2 (22.8-235) in group 2 (p<0.00). Conclusion: The MUNE method demonstrates that chronic intermittent hypoxemia during sleep causes reduction of the motor unit number in OSAS patients and is an independent risk factor for subclinical polyneuropathy.

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