Journal of Tongji Medical University

, Volume 20, Issue 1, pp 66–69 | Cite as

Compensatory head posture changes in patients with obstructive sleep apnea

  • Tong Maorong
  • Hiroki Sakakibara
  • Xia Xirong
  • Susumu Suetsugu


The upper airway narrowing and changes in head posture and their relationship with apnea severity in patients with obstructive sleep apnea (OSA) were investigated. In 86 male OSA patients and 37 healthy men, one-night polysomnographic examination was performed and a lateral cephalogram by digital image processing system was taken in each subject. Fifteen variables concerning the upper airway dimensions, area and head postures were measured by using a computer software (NIH Image). The results showed that upper airway dimensions in the OSA group at all levels were significantly smaller than those in the control group and the results hold true when the age and body mass index were well controlled in these two groups. Significant forward inclination of the cervical column was found in the patients with an apnea index (AI) greater than 35 episodes/h. And changes in the head posture variables in the whole study group were significantly correlated with AI and airway dimensions at various levels. It was suggested that there exist significant and extensive upper airway narrowing in OSA patients even in upright position and awake state; And as the apnea severity progresses, patients may assume certain compensatory head postures in an attempt to maintain an adequate airway patency.

Key words

sleep apnea obstructive cephalometry pathogenesis 


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Copyright information

© Springer 2000

Authors and Affiliations

  • Tong Maorong
    • 1
  • Hiroki Sakakibara
    • 2
  • Xia Xirong
    • 1
  • Susumu Suetsugu
    • 2
  1. 1.Department of RespirologyGeneral Hospital of Nanjing ArmyNanjing
  2. 2.Division of Pulmonology and Allergology, Department of Internal MedicineFujita Health University School of MedicineJapan

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