نتایج جستجو برای: peak inspiratory flow pif

تعداد نتایج: 613745  

2017
Anne J Lexmond Paul Hagedoorn Henderik W Frijlink Bart L Rottier Anne H de Boer

Correct inhalation technique is essential for effective use of dry powder inhalers (DPIs), as their effectiveness largely depends on the patient's inhalation manoeuvre. Children are an especially challenging target population for DPI development due to the large variability in understanding and inspiratory capacities. We previously performed a study in which we determined the prerequisites for ...

Journal: :British journal of anaesthesia 1997
L Foubert K Mareels M Fredholm S Lundin O Stenqvist

We have evaluated the mixing properties of nitric oxide in inspired gases for five different administration techniques. Nitric oxide and carbon dioxide were delivered to the ventilator system before the ventilator or after the ventilator as a continuous flow, either directly into the inspiratory limb or into a mixing chamber positioned in the inspiratory limb. Both gases were delivered as above...

2014
Marc Bodenstein Stefan Boehme Stephan Bierschock Andreas Vogt Matthias David Klaus Markstaller

BACKGROUND A recent method determines regional gas flow of the lung by electrical impedance tomography (EIT). The aim of this study is to show the applicability of this method in a porcine model of mechanical ventilation in healthy and diseased lungs. Our primary hypothesis is that global gas flow measured by EIT can be correlated with spirometry. Our secondary hypothesis is that regional analy...

2017
Anne Hagedoorn Paul Frijlink H. W. Rottier Anne J. Lexmond Paul Hagedoorn Henderik W. Frijlink Bart L. Rottier Anne H. de Boer

Correct inhalation technique is essential for effective use of dry powder inhalers (DPIs), as their effectiveness largely depends on the patient’s inhalation manoeuvre. Children are an especially challenging target population for DPI development due to the large variability in understanding and inspiratory capacities. We previously performed a study in which we determined the prerequisites for ...

2006
Nathan J. Anderson Paul E. Cassidy Larry L. Janssen Donald R. Dengel

he purpose of this study was to acquire, process, and analyze ventilation and peak inspiratory airflows during exercise to obtain a representative sample set of ventilation data of the general working population. A total of 13 volunteers exercised on a treadmill at three relative work rates of 40%, 60%, and 80% of their maximal aerobic capacity. Ventilation measurements and peak inspiratory air...

Journal: :Respiratory care 2013
Joshua F Gonzales Christopher J Russian S Gregg Marshall Kevin P Collins

BACKGROUND Inspiratory rise time and cycling criteria are important settings in pressure support ventilation. The purpose of this study was to investigate the impact of minimum and maximum rise time and inspiratory cycling criteria settings on 6 new generation ventilators. Our hypothesis was there would be a difference in the exhaled tidal volume, inspiratory time, and peak flow among 6 differe...

Journal: :Respiratory care 2011
George Ntoumenopoulos Harriet Shannon Eleanor Main

BACKGROUND Intubation and mechanical ventilation can impair mucociliary clearance and cause secretion retention, airway occlusion, atelectasis, and pneumonia. Animal and laboratory work has demonstrated that mechanical ventilator settings can generate a flow bias (inspiratory or expiratory) that may result in mucus movement either away from the ventilator (deeper into the lungs) or toward the ...

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