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Yıl:2017; Cilt: 4; Sayı: 1>> Özet
TAM METİN
Türk Uyku Tıbbı Dergisi; 2017;4(1):16-21
Kalp Seslerinden Uyku Apnesi Tespit Edilebilir mi?
M Yıldız, Z Tabak, S Yetkin
Başkent Üniversitesi, Ankara
Amaç: Nefes alıp verme ve nefes tutma sırasında kalp seslerinde morfolojik değişimler olduğu daha önce gösterilmiştir. Bu çalışmada, literatürde ilk defa olmak üzere; apne sırasında kalp seslerinde görülen morfolojik değişimleri karakterize edebileceği düşünülen zaman ve frekans düzlemi parametrelerinin çeşitli sınıflandırıcılara öğretilerek kalp seslerinden otomatik olarak uyku apnesi tespiti yapılıp yapılamayacağı araştırılmıştır. Gereç ve Yöntem: Bu amaçla 17 kişiden tam polisomnografi kayıtları ile eş zamanlı olarak kalp sesleri kaydedilmiştir. K en yakın komşu ve destek vektör makineleri sınıflandırıcılarına, kalp seslerinden elde edilen özellik vektörleri verilerek sınıflandırma çalışmaları yapılmıştır. Bulgular: K en yakın komşu sınıflandırıcısıyla alınan en iyi sonuç, %48 doğruluk, %100 seçicilik seviyesinde olmuştur. Destek vektör makineleri sınıflandırıcısıyla ise %82 doğruluk, %42 seçicilik değerlerine ulaşılmıştır. Sonuç: Ulaşılan bu değerlere göre, çalışmada kullanılan kalp sesine ait parametreler ile kalp seslerinden uyku apnesi teşhisi koymanın mümkün olmadığı sonucuna varılmıştır.
Can Sleep Apnea be Detected by Heart Sounds?
Objective: It has previously been shown that there are morphological changes in hearth sounds during respiration and holding breath. In this study, for the first time in the literature, it was investigated whether sleep apnea could be detected automatically from heart sounds by teaching various classifiers of time and frequency plane parameters which are thought to be able to characterize the morphological changes seen in heart sounds during apnea. Materials and Methods: For this purpose, heart sounds were recorded simultaneously with full polysomnography records from 17 people. Classification studies were performed by assigning feature vectors obtained from heart sounds to K nearest neighbors and support vector machines. Results: The best result with K nearest neighbor classifier was 48% accuracy, 100% selectivity level. With support vector machines classifier, 82% accuracy and 42% selectivity values were reached. Conclusion: According to these values, it is concluded that the parameters of the heart sound used in this study do not make it possible to diagnose the sleep apnea from the heart sounds.

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