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机构地区:[1]天津市天和医院ICU,300050
出 处:《岭南急诊医学杂志》2007年第1期7-8,17,共3页Lingnan Journal of Emergency Medicine
摘 要:目的:研究利用无创心功能监测仪辅助对血流动力学不稳定呼吸衰竭病人选择最佳呼气末正压(PEEP)。方法:血流动力学不稳定的呼吸衰竭病人使用机械通气后连接无创心功能检测仪持续监测心功能指标,包括心输出量(CO)、平均动脉压(MP)、心脏指数(CI)、左室做功指数(LCWI)、前负荷(TFC)、气道峰压(PIP)。当PEEP=0时记录上述指标,并定为初始值。计算CO初始值的95~91%,90~86%,85~81%,80~76%,75%以下的具体值。以3cmH2O为为间隔逐渐增加PEEP,同时连续监测无创心功能指标,密切注意CO。在CO为CO初始值的95~91%,90~86%,85~81%,80~76%,75%以下均记录上述数值及检查值(若存在一个以上PEEP值的CO在同一范围内,取PEEP较大值)。结果:当CO降为初始值的81~85%时,氧合指数较前有显著提高(P<0.05),CI有所下降(P<0.05),但MAP及其他数值无显著变化。结论:对于血流动力学不稳定的机械通气患者,通过无创心功能监测相关指标,可帮助选择最佳PEEP。Objective: Utilizing the noninvasive heart function monitor to choose the best positive end expiratory pressure (PEEP) for the respiratory failure patients with unstable haemodynamics. Methods: The respiratory failure patients with unstable haemodynamics and use the Bioz noninvasive heart function monitor to determine the heart functional parameters including cardiac output (CO),mean artery pressuro(MAP),cardiac index(CI),left ventricle work index (LCWI),thoracic fluid content(TFC)and peak inspiratory pressure(PIP). When the PEEP=0, the parameters were recorded as the initial value. Calculating follow data: (95%-91%)CO initial value, (90%-86%) CO initial value, (85%- 81%) CO initial value, (80%-76%)CO initial value, (below 75%) CO initial value, and then increasing PEEP by 3cmH20. The heart functional parameters were monitored continuously, and record all the CO with the change of PEEP (ff we gain the same CO from more than one PEEP, selecting the great value). Results: The oxygenation index increases significantly (P 〈 0.05), when the CO decrease to (81%-85%) CO initial value. CI decreases significantly (P 〈 0.05), however, MAP and other parameters have no change. Conclusion: We choose the best PEEP for the unstable haemodynamics patients with mechanic ventilation through the noninvasive heart function monitor.
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