›› 2014, Vol. 34 ›› Issue (6): 423-426.

• Basic and Clinical Research • Previous Articles     Next Articles

Evaluation of the respiratory function and sleep quality with the polysomnography(PSG),following mandibular retrognathia

  

  • Received:2013-11-20 Revised:2014-02-19 Online:2014-06-28 Published:2014-07-07

Abstract: Objective  To determine the effects of orthognathic surgery, especially mandibular retrognathia on pharyngeal airway space,respiratory function during sleep. Methods  15 patients were analyzed using a 1 night sleep study for full polysomnography(PSG) before and 1 week after operation.The monitoring indicators of PSG include AHI index,the average and lowest blood oxygen. Results The data showed that AHI changed significantly after surgery,especially the increase of the obstructive apnea and hypopnea; there was no significant change in the average blood oxygen. Conclusions  A large amount of mandibular setback might inhibit biological adaption and cause sleep-disordered breathing.We should control the setback in a suitable distance to prevent the obstructive sleep apnea and hypopnea syndrome(OSAHS).

Key words: orthognathic surgery, mandibular retrognathia, polysomnography(PSG), OSHAS

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