منابع مشابه
A pressure-operated collect valve for respiratory studies during intermittent positive pressure ventilation.
During the inflation phase of intermittent positive pressure ventilation gas is compressed in the tubes and connections between the valves of the ventilator and the patient. In machines where the valves are an integral part of the mechanism of the ventilator, and are therefore situated at some distance from the patient, the volume of gas compressed in the collecting tubes may be appreciable. Th...
متن کاملPerformance study of a diaphragm type crankcase pressure control valve
Pressure control valve (PCV) is implemented in internal combustion engine to regulate crankcase pressure. In this study, the performance of a diaphragm PCV valve is investigated numerically and experimentally. Firstly, numerical simulation is carried out using commercial code to predict the flow and pressure distribution inside the valve. Furthermore, downstream and upstream pressure of the val...
متن کاملSudden severe barotrauma from self-inflating bag-valve devices.
Self-inflating bag-valve devices are commonly used for the ventilation of intubated patients, especially during resuscitation and transport. These devices are generally safe, but minor deviations in their recommended use can expose patients to airway pressures greater than 135 cm H2O. We present a patient in whom a sudden tension pneumothorax developed during ventilation with a bag-valve device...
متن کاملControlled trial of continuous inflating pressure for hyaline membrane disease.
A controlled trial of elective intervention with continuous inflating pressure (CIP) was performed in infants with severe hyaline membrane disease who weighed more than 1000 g at birth. Infants entered the trial if their arterial oxygen tension (PaO2) fell below 60 mmHg while breathing a fractional inspired oxygen concentration (F1O2) greater than 0-95. 11 out of 12 infants in the CIP-treated g...
متن کاملOxygen outflow delivered by manually operated self-inflating resuscitation bags in patients breathing spontaneously.
OBJECTIVE To determine the oxygen outflow delivered by seven different models of manually operated self-inflating resuscitation bags (with and without an oxygen reservoir connected), which were tested using different oxygen supply rates without manipulating the bag, by simulating their use in patients breathing spontaneously. METHODS The oxygen outflow was measured using a wall oxygen flow me...
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ژورنال
عنوان ژورنال: Anaesthesia
سال: 1966
ISSN: 0003-2409,1365-2044
DOI: 10.1111/j.1365-2044.1966.tb02612.x