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中华危重症医学杂志(电子版) ›› 2018, Vol. 11 ›› Issue (06) : 382 -386. doi: 10.3877/cma.j.issn.1674-6880.2018.06.005

所属专题: 文献

论著

呼气末正压通气对伴有低血容量趋势行机械通气患者血流动力学的影响
冯棋佳1, 陈学清1,(), 王晨1, 娄林娟1, 马瑜菲1, 刘长文2   
  1. 1. 311300 杭州,临安区人民医院重症医学科
    2. 310006 杭州,杭州市第一人民医院重症医学科
  • 收稿日期:2018-06-13 出版日期:2018-12-01
  • 通信作者: 陈学清
  • 基金资助:
    杭州市卫生科技计划一般项目(2015B44)

Effect of positive end expiratory pressure on hemodynamics in patients with hypovolemic tendency undergoing mechanical ventilation

Qijia Feng1, Xueqin Chen1,(), Chen Wang1, Linjuan Lou1, Yufei Ma1, Changwen Liu2   

  1. 1. Department of Critical Care Medicine, Lin'an District People's Hospital, Hangzhou 311300, China
    2. Department of Critical Care Medicine, First People's Hospital of Hangzhou, Hangzhou 310006, China
  • Received:2018-06-13 Published:2018-12-01
  • Corresponding author: Xueqin Chen
  • About author:
    Corresponding author: Chen Xueqin, Email:
引用本文:

冯棋佳, 陈学清, 王晨, 娄林娟, 马瑜菲, 刘长文. 呼气末正压通气对伴有低血容量趋势行机械通气患者血流动力学的影响[J]. 中华危重症医学杂志(电子版), 2018, 11(06): 382-386.

Qijia Feng, Xueqin Chen, Chen Wang, Linjuan Lou, Yufei Ma, Changwen Liu. Effect of positive end expiratory pressure on hemodynamics in patients with hypovolemic tendency undergoing mechanical ventilation[J]. Chinese Journal of Critical Care Medicine(Electronic Edition), 2018, 11(06): 382-386.

目的

探讨呼气末正压(PEEP)对低血容量趋势患者行机械通气时血流动力学的影响。

方法

选择20例伴有低血容量趋势需行机械通气的患者作为研究对象。所有患者均在基础呼吸模式上分别加用PEEP 0、5、10、15 cmH2O,每次持续约30 min。记录所有患者的心率、平均动脉压(MAP)、肺动脉嵌压(PAWP)、每搏指数(SVI)、心排血量(CO)、心指数及体循环血管阻力指数(SVRI)等血流动力学指标,中心静脉压(CVP)、髂总静脉压(CIVP)及ΔCVP等静脉回流梯度指标,吸气峰压(PIP)、气道阻力(RAW)、用吸气暂停键测出平台压(Pplat)、气道平均压力(Pmean)及肺循环血管阻力指数(PVRI)等呼吸力学指标。

结果

随着PEEP水平的增加,患者心率、PAWP及SVRI均显著增加,而MAP、CO、心指数及SVI则逐渐下降(F = 20.311、15.100、32.915、15.100、198.635、435.100、17.000,P均< 0.001),且CO于PEEP为5 cmH2O时与PEEP为0 cmH2O时比较,已经出现显著降低[(5.31 ± 0.11)L / min vs.(5.46 ± 0.24)L / min];患者的CVP、CIVP的水平逐渐升高,而ΔCVP逐渐下降(F = 47.879、27.578、21.393,P均< 0.001);患者的PIP、Pplat、Pmean、PVRI水平均逐渐升高,且PEEP为15 cmH2O时达最高(F = 67.152、74.025、818.208、31.141,P均< 0.001),而RAW在不同PEEP间比较差异无统计学意义(F = 2.082,P = 0.131)。

结论

对有低容量趋势行机械通气的患者,当PEEP ≥ 5 cmH2O即出现CO明显下降,因此对于有低容量趋势患者尽量使用最小PEEP来达到治疗目的。

Objective

To investigate the effect of positive end expiratory pressure (PEEP) on hemodynamics in patients with hypovolemic tendency undergoing mechanical ventilation.

Methods

Totally 20 patients with hypovolemic tendency undergoing mechanical ventilation were enrolled in this study. All patients were given PEEP of 0, 5, 10, and 15 cmH2O in the basal breathing mode for about 30 min each time. The hemodynamic indexes of heart rate, mean arterial pressure (MAP), pulmonary arterial wedge pressure (PAWP), stroke volume index (SVI), cardiac output (CO), cardiac index and systemic vascular resistance index (SVRI), venous reflux gradient indexes of central venous pressure (CVP), common iliac venous pressure (CIVP) and ΔCVP, and respiratory mechanics indexes of peak inspiratory pressure(PIP), airway resistance (RAW), platform pressure (Pplat), mean airway pressure (Pmean) and pulmonary vascular resistance index (PVRI) were detected and compared among different PEEP levels.

Results

As the level of PEEP went up, the heart rate, PAWP and SVRI increased significantly, the MAP, CO, cardiac index and SVI decreased gradually (F = 20.311, 15.100, 32.915, 15.100, 198.635, 435.100, 17.000; all P < 0.001), and the CO level in the PEEP of 5 cmH2O was much lower than that in the PEEP of 0 cmH2O [(5.31 ± 0.11) L / min vs. (5.46 ± 0.24) L / min]. The levels of CVP and CIVP increased gradually, and ΔCVP decreased (F = 47.879, 27.578, 21.393; all P < 0.001). Meanwhile, the levels of PIP, Pplat, Pmean and PVRI increased gradually, and peaked at the PEEP of 15 cmH2O (F = 67.152, 74.025, 818.208, 31.141; all P < 0.001). However, there was no significant difference in RAW among different PEEP levels (F = 2.082, P = 0.131).

Conclusion

When PEEP is no less than 5 cmH2O, CO significantly decreases in patients with hypovolemic tendency undergoing mechanical ventilation, so the minimal PEEP should be used for therapeutic purposes.

表1 不同PEEP对伴有低血容量趋势行机械通气患者血流动力学的影响( ± s
表2 不同PEEP水平对伴有低血容量趋势行机械通气患者静脉回流梯度的影响( ± s
表3 PEEP对呼吸力学的影响( ± s
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