Flow Resistance of Expiratory Positive-Pressure Systems

We measured the flow-resistance of five commercially available 10 cm H2O expiratory positive-pressure (EPP) valves (n = five per valve type) at bias flows of between 0 and 2,000 ml/s. We found that individual valves of each type and manufacturer functioned similarly. Different valve types, however,...

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Veröffentlicht in:	Chest 1988-10, Vol.94 (4), p.788-791
Hauptverfasser:	Pinsky, Michael R., Hrehocik, Drew, Culpepper, Judith A., Snyder, James V
Format:	Artikel
Sprache:	eng
Schlagworte:	Airway Resistance Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy Biological and medical sciences Emergency and intensive respiratory care Humans Intensive care medicine Medical sciences Positive-Pressure Respiration - instrumentation Pressure Respiration
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Zusammenfassung:	We measured the flow-resistance of five commercially available 10 cm H2O expiratory positive-pressure (EPP) valves (n = five per valve type) at bias flows of between 0 and 2,000 ml/s. We found that individual valves of each type and manufacturer functioned similarly. Different valve types, however, functioned differently: with one type, system pressure was higher than rated (p
ISSN:	0012-3692 1931-3543
DOI:	10.1378/chest.94.4.788