BannerMJ, BlanchPD, KirbyRR. Imposed work of breathing and methods of triggering a demand flow, continuous positive airway system. Crit Care Med1993;21(3):183–190.
2.
BhattSB, PatelCB, TanIKS, VernascoD, TamYH. Imposed work of breathing during tracheal pressure triggering using a demand valve CPAP system. Respir Care1996;41(6):512–518.