Mechanical ventilation during low-flow anaesthesia. Experience with an alternative to the bag-in-bottle
| Autor: | L. Berntman, O. Werner, H. H. Luttropp |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Artificial ventilation
medicine.medical_specialty Swine medicine.medical_treatment Anesthesia General law.invention law Tidal Volume medicine Animals Humans Tidal volume Mechanical ventilation business.industry Respiration Artificial Surgery Fresh gas flow Oxygen Anesthesiology and Pain Medicine Isoflurane Volume (thermodynamics) Anesthesia Ventilation (architecture) Limiting oxygen concentration business medicine.drug |
| Zdroj: | Anaesthesia. 45:855-858 |
| ISSN: | 1365-2044 0003-2409 |
| DOI: | 10.1111/j.1365-2044.1990.tb14572.x |
| Popis: | Clinical experience with low-flow anaesthesia during controlled ventilation of the lungs is described. The anaesthesia circle is separated by a corrugated hose that serves as a large deadspace. This open connexion has no bellows or overflow valve and therefore the risk of mechanical dysfunction is small. No mixing of circle and ventilator gas occurs during normal operation. Major decreases in the oxygen concentration in the system are unlikely even if the fresh gas flow is interrupted or significant leaks from the circle occur because 100% oxygen is delivered by the ventilator. A hose volume larger than 1650 ml prevented gas mixing at tidal volumes of 380-1170 ml. There was no system-related mishap in over 600 patients, who comprised about 40% of the neurosurgical patients anaesthetised during that period. The cost of isoflurane was reduced to about 33% of that incurred during previous periods. |
| Databáze: | OpenAIRE |
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