TY - JOUR T1 - Proposal for a systematic analysis of polygraphy or polysomnography for identifying and scoring abnormal events occurring during non-invasive ventilation JF - Thorax JO - Thorax SP - 546 LP - 552 DO - 10.1136/thx.2010.142653 VL - 67 IS - 6 AU - J Gonzalez-Bermejo AU - C Perrin AU - J P Janssens AU - J L Pepin AU - G Mroue AU - P Léger AU - B Langevin AU - S Rouault AU - C Rabec AU - D Rodenstein AU - on behalf of the SomnoNIV Group Y1 - 2012/06/01 UR - http://thorax.bmj.com/content/67/6/546.abstract N2 - Non-invasive ventilation (NIV) is recognised as an effective treatment for chronic hypercapnic respiratory failure. Monitoring NIV during sleep may be preferable to daytime assessment. This paper reports the findings of an international consensus group which systematically analysed nocturnal polygraphic or polysomnographic tracings recorded with either volume-cycled or pressure-cycled ventilators. A systematic description of nocturnal respiratory events which occur during NIV is proposed: leaks, obstruction at different levels of the upper airway (glottis and/or pharynx), with or without decrease of respiratory drive and asynchrony. ER -