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A size analysis in obstructive sleep apnea patients
Pae, Eung-Kwon,Park, Young-Chel,Lowe, Alan A. 대한치과교정학회 1997 대한치과교정학회지 Vol.27 No.6
폐쇄성 수면무호홉(이하 OSA환자)의 일반적인 특징의 하나로 다소 비대한 Subnental부위를 든다. 따라서 근간에는 경부주의의 측정을 임상적 진단의 한 보조방법으로 채택하는 경우도 있다. 본 연구는 80명의 환자로 부터 직접위와 앙와위의 두 자세에서 각각 두 장의 측모두부방서선사진을 채득하여 OSA환자의 안면과 혀의 크기를 일반인의 그것과 비교하였다. 채득된 실험자료는 각각 증상의 심한 정도에 따라 무증상군, 경미군, 中증군 그리고 重증군으로 나누었다. 크기 측정의 방법으로는 각각의 두 계측점간의 거리를 측정하여 모든 계측치의 합으로 해부학적 크기를 대신하였다. 결과로서, 안면의 크기가 혀의 크기보다 체중과 더 높은 상관관계를 보였으나, 증상의 심한 정도와는 혀의 크기가 더 중요한 측정치 임을 알 수 있었다. 혀의 크기가 증상의 정도에 비례함에 있어서 1%의 유의차를 보였다. The submental region in patients with Obstructive Sleep Apnea(OSA) is perceived to larger than normal. Therefore neck thickness has become a variable routinely measured during clinical screening of OSA subjects. In general, OSA patients are believed to have a large tongue and a narrow airway. To test if OSA patients have a larger face and tongue than non-apneics, eighty pairs of upright and supine cephalograms were obtained from four groups of subjects subclassified in accordance with severity. The sum of distances between pairs of landmarks was calculated for each subjects and employed as a pure size variable for the face and tongue. Only tongue size becomes larger in accordance with apnea severity in both body positions (P<.01). Tongue size reflects apnea severity, yet it provides only a small fraction of the explanation with regard to apnea severity. We conclude that size may be one factor of many which are significantly related to OSA severity.
CEPHALOMETRIC STUDY OF OBSTRUCTIVE SLEEP APNEA PATIENTS IN THE UPRIGHT AND SUPINE POSITIONS
Kim, Jong-Chul,Lowe, Alan A 대한치과교정학회 1995 대한치과교정학회지 Vol.25 No.6
Sixty male patients with polysomnographically documented OSA were included in this study. A pair of cephalograms were obtained in the upright and supine positions. In the supine position, the ANB angle, lower facial height and the cross-sectional area of soft palate increased and there was a decrease in the vertical airway length and oropharynx cross-sectional area. Positional changes did not affect the cross-sectional area of tongue, but the cross-sectional area of the oropharynx decreased in the supine position. The obese group had higher AI and RDI. Maxillary unit length, C3-H, the cross-sectional areas of tongue, soft palate and oropharynx were significantly greater in the group Obese than in non-obese group. No correlation was noted between the mandibular unit length and OSA severity. The group of small mandibular unit length showed shorter lower facial height and maxillary unit length, and smaller cross-sectional area of tongue than the long mandibular unit length group. Hyold bone positioned more inferiorly and cross-sectional area of nasopharynx decreased as the OSA severity increased.