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Resistance of humidifiers, and inspiratory work imposed by a ventilator-humidifier circuit.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Oh, Teik Bhatt, Sonali |
| Copyright Year | 1991 |
| Abstract | The pressures and resistances of a bubble humidifier (Bennett Cascade) and a blow-by humidifier (Fisher and Paykel) were measured and computed at gas flow rates from 4.5 to 100 litre min-1. Pressures increased with flows, with the Bennett pressures being greater at all flows. The resistance of the Fisher-Paykel increased with flows, but remained less than that of the Bennett. An inverse resistance-flow relationship was seen with the Bennett up to a flow of 35 litre min-1. The work of breathing through a Servo 900C ventilator-humidifier circuit was computed, using a lung model. Work was performed by the Servo 900C on the lung, especially with the Fisher-Paykel circuit. The Bennett circuit required considerably greater (3.7 times more) inspiratory work. Thus the Bennett Cascade humidifier may present an unacceptable inspiratory load during spontaneous breathing. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://oup.silverchair-cdn.com/oup/backfile/Content_public/Journal/bja/66/2/10.1093/bja/66.2.258/2/66-2-258.pdf?Expires=1498494826&Key-Pair-Id=APKAIUCZBIA4LVPAVW3Q&Signature=Xcxqnfyl6FKMU73zyJMJ8OlRyct1OFrDAkA5-pT~i2LD~DEvuPhJJZMecwqN8OqSzkEcKls9s3-0khWAKmlW47R6VufJ1sfrhWA6I8Igc9Nt6qC71neu2zkpTIq1UuytLjf9WYLt6oq67eIqhkxx80~vQErenWP9Pq0OM4wSuiP2OM6MY7KWRE0bZ0ajv5FVEgYI1N82xm-Y10M8S3umCCMmih6mvrpmyGayTk8g1pVNfszw9Mkq0lyu4jBVsetKcfreiHqTSXEnEdJBKQjmOavf5vBBPKqOYWbAVjCEL-wHfIM6XPO9b9xwugmtYIJ~jMttKJbZRt9usRhrL1LTpA__ |
| PubMed reference number | 1817633v1 |
| Volume Number | 66 |
| Issue Number | 2 |
| Journal | British journal of anaesthesia |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Flow Household humidifier, device (physical object) Inspiration function Structure of parenchyma of lung Ventilator - respiratory equipment |
| Content Type | Text |
| Resource Type | Article |
