<prompt> Mapelson circuit used in children is?Mapelson AMapelson DMapelson CAyers T tube  <response>: ANSWER: D Ayers T tubeREF: Morgans Anesthesia 3R edition p. 30ANESTHETIC GAS DELIVERY:SPONTANEOUS BREATHINGIPPVPOST OPERATIVEMAPELSON AMapelson-DMapelson-EMapelson C or WATERSAdultsBains coaxialAyers t tubesystemFlow rate- 51minMeant for infants and childrenFlow rate-2-3 x min. volumeEqual to minute volume 