Anaes SAQs · Vaporisers
Vaporiser output in low-flow and closed-circuit anaesthesia
Final SAQ — at low flows the vaporiser setting and the inspired concentration diverge: the circle absorbs and re-breathes the agent, uptake is high early, and the dial must run higher than the desired end-tidal concentration.
On this page
Study tools
Target exams
ANZCAFRCAABAEDAIC
Prompt
Discuss the factors that alter the delivered and inspired concentration when a variable-bypass vaporiser is used with low fresh gas flows and a circle system.
Question
Discuss the factors that alter the delivered and inspired concentration when a variable-bypass vaporiser is used with low fresh gas flows and a circle system.
References2ShowHide
- [3]Parthasarathy S, Ravishankar M. The closed circuit and the low flow systems. Indian J Anaesth, 2013.PMID 24249885
- [24249886]Bersten AD, Soni N (eds) Oh's Intensive Care Manual. 8th edition, Elsevier, 2018.