MACpalm is a palm implementation of the nomograms published in Age-related iso-MAC charts for Isoflurane, sevoflurane and desflurane in man by Nickalls and Mapleson, in BJA 91(2) 170-4 (2003).

Given the patients age, end-tidal nitrous concentration and chosen volatile agent, it allows calculation of the required end-tidal concentration of volatile agent to achieve a particular MAC, allowing for the fall in MAC that occurs with increasing age. It also allows the reverse, that is calculation of MAC given the ET volatile concentration.