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highflow oxygen

J Bräunlich, G Nilius
The therapy of choice in hypoxemic respiratory failure (type 1) is the application of supplemental oxygen at flow rates of 1 to 15 l/min via nasal prongs or mask. Non-invasive or invasive positive pressure ventilation will be initiated when the oxygen therapy effects are not sufficient or if hypercapnic respiratory failure (type 2) is the underlying problem. Recently, an alternative therapy option is available, from the pathophysiology it can be classified between oxygen therapy and positive pressure ventilation...
January 2016: Pneumologie
Jens Bräunlich, Hubert Wirtz
Nasal High Flow (NHF) provides a warmed and humidified air stream. In pediatrics, this method is already in widespread use and is increasingly replacing the CPAP. New studies show success in treating adults. Currently the acute hypoxemic insufficiency cause of pneumoniae is a secured area of use. NHF is not inferior in comparison to other oxygen delivery systems. At this juncture effectiveness of this easy to use method is not clear. Preliminary reports describe an improvement in ventilation by the NHF. Here, a wash-out of the airways and improved alveolar ventilation seem to be the main operating principles...
December 2015: Deutsche Medizinische Wochenschrift
H Stein, R Hall, K Davis, D B White
OBJECTIVE: The electrical activity of the diaphragm (Edi) reflects neural respiratory drive. Edi peak correlates with inspiratory drive and Edi minimum (Edi min) correlates with the tonic activity of the diaphragm. Edi data in non-ventilated preterm neonates have not been determined.The primary aim of this study was to determine Edi values in non-ventilated preterm neonates throughout postnatal maturation and with various types of noninvasive respiratory support. The secondary aim was to evaluate the success or complications of placement of the Edi catheter in premature neonates...
September 2013: Journal of Perinatology: Official Journal of the California Perinatal Association
W N Wicomb, G M Collins
A new technique for 24-hr cardiac preservation is described utilizing very low flow perfusion (microperfusion) with a cold flush solution. Rabbit hearts were arrested with UW solution and then perfused with the same solution through the aortic root at 0 degrees C at a rate of 3-6 ml/gm heart weight/24 hr. When tested on an ex vivo working heart model, the cardiac output (CO) was 28.72 +/- 7.69 ml/g/min compared with fresh UW flushed controls of 26.48 +/- 2.25 ml/g/min. Both oxygenated highflow perfusion with a more conventional perfusate and 24-hr ice storage with UW led to inferior results...
July 1989: Transplantation
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