The median time of intubation with MAC and TMAC in scenario A was 19.6 ( interquartile range [ IQR ] , 18-23 ) vs 19 ( IQR , 16.2-21 .8 ) ; in scenario B , 29.5 ( IQR , 25-31 ) vs 26 ( IQR , 23.5-29 ) seconds ; and in scenario C , 38 ( IQR , 32.5-45 ) vs 29 ( IQR , 25-31 ) seconds , respectively .