03 如何设置驱动压
根据ΔP = Ppl -PEEP,改变PEEP水平不仅要考虑对肺气体交换和血
流动力学的影响,而且要考虑对驱动压的影响,PEEP降低后,驱动压增加,表明肺过度膨胀超过肺复张,反之,代表肺复张减少,由此,驱动压导向个体化PEEP滴定为优化PEEP设置提供了一个方法。
有研究将PEEP从2-10cmH20递增的方式,来设置最佳PEEP达到降低驱动压的效果,也有研究从高PEEP到低PEEP以递减的方式来设置最优PEEP。通过个体化滴定的PEEP降低驱动压,可以改善呼吸系统顺应性和氧合,降低术后肺不张的发生率和严重性。 参考文献
[1]. Amato MB, Meade MO, Slutsky AS, et al. Driving pressure and survival in the acute respiratory distress syndrome [J]. N Engl J Med. 2015;372(8):747–755.
[2].Bugedo G, Retamal J, Bruhn A. Driving pressure: a marker of severity, a safety limit, or a goal for mechanical ventilation?[J]. Crit Care. 2017;21(1):199. Published 2017 Aug 4.
[3].Ahn HJ, Park M, Kim JA, et al. Driving pressure guided ventilation [J]. Korean J Anesthesiol. 2020;10.4097/kja.20041.
[4].Grieco DL, Chen L, Dres M, Brochard L. Should we use driving pressure to set tidal volume?[J]. Curr Opin Crit Care. 2017;23(1):38–44.
[5].O'Gara B, Talmor D. Perioperative lung protective ventilation[J]. BMJ. 2018;362:k3030. Published 2018 Sep 10.
[6].Park M, Ahn HJ, Kim JA, et al. Driving Pressure during Thoracic Surgery: A Randomized Clinical Trial[J]. Anesthesiology. 2019;130(3):385–393.
内容 | 桓宇