[Inhalation anesthesia in unusual situations: the Eole 2 NA ventilator].

The volumetric ventilator Eole 2 NA has been adapted to work as an anaesthesia machine with low flow or closed system. This modified device is very easy to use in exceptional situations: because of its strength and reliability; its favorable quality/price ratio; versatile electrical supply: mains (220 volts) or 24 D.C.V. from internal battery (2 hours autonomy) or external battery (8 hours autonomy); gas economy: less than 1 L.min-1 of fresh gas flow, whether O2/N2O = 0.5 L.min-1 of each gas or 1 L.min-1 delivered by an oxygen concentrator. Clinical trials are discussed.