Noninvasive monitoring of respiratory mechanics during sleep

Noninvasive ventilatory support during sleep improves respiratory failure in kyphoscoliosis.

We investigated the effect on daytime respiratory function and quality of sleep, of providing adequate ventilation either by intermittent positive pressure ventilation (IPPV) or by continuous positive airways pressure (CPAP) both administered through a nose mask in a group of seven patients with severe thoracic kyphoscoliosis. All night control sleep studies were performed with and without vent...

Evaluation of a method for assessing respiratory mechanics during noninvasive ventilation.

Noninvasive assessment of respiratory resistance (Rrs) and elastance (Ers), which is not easy with conventional methods, could be useful in the optimization of pressure support ventilation. The aim of this study was to evaluate a simple noninvasive method (Delta-inst) of measuring Rrs during nasal pressure support ventilation. Rrs and Ers (Delta-inst) were computed from inspiratory mask pressur...

Respiratory Physiology During Sleep

Ventilatory regulation is conceptually best understood as a 3-part system consisting of a central controller, sensors, and effectors. The effectors of respiration include the respiratory motoneurons and muscles, which are involved in inspiration and expiration. Positional changes during sleep (ie, nonupright position) affect the mechanics of breathing significantly. Both hypoxemia and hypercapn...

Respiratory mechanics during forward acceleration.

Monitoring respiration during sleep.

The sleep-related breathing disorders have been categorized in various ways. The most basic schema divides them into obstructive or central apneic events. An American Academy of Sleep Medicine (AASM) Task Force Report published in 1999 defined four separate syndromes associated with abnormal respiratory events during sleep among adults, namely, obstructive sleep apnea-hypopnea syndrome (OSAHS),...