Practical assessment of respiratory mechanics

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Practical assessment of respiratory mechanics.

More than 30 years after its ®rst description, mortality associated with the acute respiratory distress syndrome (ARDS) is still great, with reported rates between 30 and 60%. The range in mortality is partly because of the loose de®nition of both ARDS and acute lung injury (ALI), based on bilateral lung in®ltrates on X-ray, a left ventricular ®lling pressure <18 mm Hg and a PaO2/FIO2 of <300 m...

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Forced oscillation assessment of respiratory mechanics in ventilated patients

The forced oscillation technique (FOT) is a method for non-invasively assessing respiratory mechanics that is applicable both in paralysed and non-paralysed patients. As the FOT requires a minimal modification of the conventional ventilation setting and does not interfere with the ventilation protocol, the technique is potentially useful to monitor patient mechanics during invasive and noninvas...

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Assessment of respiratory mechanics with forced oscillations in healthy newborns.

BACKGROUND Lung function data in healthy newborn infants are scarce largely due to lack of suitable techniques, although data for developmental and prenatal exposure studies are much needed. We have modified the forced oscillation technique (FOT) for the measurement of respiratory mechanical impedance (Zrs) in unsedated sleeping infants in the first 3 days of life. METHODS Zrs was measured du...

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Respiratory Mechanics

Respiratory Mechanics by Theodore Wilson is a slim paperback volume (64 pages) describing three aspects of the way the lungs work: 1) pressure– volume relationships with regard to the lungs, 2) chest wall and muscles with regard to how the respiratory pump works, and 3) gas flow and transport. Relevant details about the author are missing, which I think is a loss. He is Emeritus Professor of Ae...

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Assessment of respiratory mechanics and respiratory muscles of difficult to wean critically ill patients

Methods In this observational study, 20 stable intubated patients with normal cardiac function undergoing prolonged ventilation (>10 days) in whom 3 attempts of spontaneous breathing trials failed, were evaluated. Diaphragmatic muscle function was assessed invasively by the tension-time index of the diaphragm (TTdi), an indicator of diaphragm endurance time. Additional physiologic measurements ...

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ژورنال

عنوان ژورنال: British Journal of Anaesthesia

سال: 2003

ISSN: 0007-0912

DOI: 10.1093/bja/aeg141