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Framework for patient-ventilator asynchrony during long-term non-invasive ventilation

Abstract

Episodes of patient-ventilator asynchrony (PVA) occur during acute and chronic non-invasive positive pressure ventilation (NIV). In long-term NIV, description and quantification of PVA is not standardised, thus limiting assessment of its clinical impact. The present report provides a framework for a systematic analysis of polygraphic recordings of patients under NIV for the detection and classification of PVA validated by bench testing. The algorithm described uses two different time windows: rate asynchrony and intracycle asynchrony. This approach should facilitate further studies on prevalence and clinical impact of PVA in long-term NIV.

  • non-invasive ventilation
  • home ventilators
  • asynchrony
  • obstructive sleep apnoea
  • central sleep apnea
  • polysomnography
  • monitoring
  • sleep-disordered breathing
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