ARDS患者行俯卧位通气时应用死腔分数评价疗效
Effects of Dead Space Fraction on Prone Position Ventilation in ARDS Patients
-
摘要: 目的 探讨死腔分数 (dead space fraction, VD/VT) 是否可以作为判断重度急性呼吸窘迫综合征 (acute respiratory distress syndrome, ARDS) 患者行俯卧位通气 (prone position ventilation, PPV) 治疗有效的指标.方法30例重度ARDS患者 (PaO2/FiO2<100 mm H) g纳入本研究.按不同病因分为肺内源性ARDS组 (ARDSp) 和肺外源性ARDS组 (ARDSexp) , 记录仰卧位和俯卧位通气2 h、4 h、6 h、8 h、10 h的PaO2/FiO2和VD/VT.结果PPV使VD/VT下降和PaO2/FiO2升高, 在PPV不同时间点PaO2/FiO2、VD/VT差异均有统计学意义 (P<0.001) , VD/VT的最大变化发生在PPV 4 h, 而PaO2/FiO2在PPV 6 h后才出现最佳变化 (PaO2/FiO2上升>20mm H) g.VD/VT与PaO2/FiO2经Pearson相关性分析呈正相关关系 (t=0.67, P<0.001) .ARDSp组与PPV前比较, PPV 2 h PaO2/FiO2和VD/VT无明显变化, 通气4 h PaO2/FiO2明显升高 (t=2.37, P=0.03) 、VD/VT明显下降 (t=5.26, P=0.001) , 通气6 h PaO2/FiO2和VD/VT较通气4 h无明显变化;ARDSexp组与PPV前比较, PPV 2 h PaO2/FiO2明显升高 (t=4.65, P=0.04) 、VD/VT明显下降 (t=3.56, P=0.009) , 且4 h较通气2 h无明显变化, 通气6 h PaO2/FiO2和VD/VT仍维持在相同水平.结论 VD/VT可作为评价ARDS患者行PPV治疗有效的指标, 在评价PPV疗效上比PaO2/FiO2更灵敏, 可以指导肺内、外源性ARDS患者的治疗.
-
关键词:
- 死腔分数 /
- 肺内/外源性ARDS /
- 俯卧位通气 /
- 疗效
Abstract: Objective To evaluate the effects of dead space fraction (VD/VT) on prone position ventilation (PPV) in patients with severe acute respiratory distress syndrome (ARDS) . Methods A total of 30 patients with severe ARDS (PaO2/FiO2< 100 mm H) g were enrolled in this study and were divided into pulmonary insult ARDS group (ARDSp) and extrapulmonary insult ARDS group (ARDSexp) according to different etiological factors. PaO2/FiO2 and VD/VT were recorded in supine position and prone position at 2 h, 4 h, 6 h, 8 h and 10 h after ventilation. Results VD/VT decreased and PaO2/FiO2 increased with PPV. PaO2/FiO2 and VD/VT showed significant difference at different time points (P < 0.001) , with the biggest change of VD/VT at PPV 4 h and the best transformation of PaO2/FiO2 (increase of PaO2/FiO2>20 mm H) g after PPV 6 h. There was a positive correlation between VD/VT and PaO2/FiO2 by Pearson correlation analysis (t=0.67, P < 0.001) . In ARDSp group, there was no significant change of PaO2/FiO2 and VD/VT between supine position and PPV 2 h. At PPV 4 h, PaO2/FiO2 significantly increased (t=2.37, P=0.03) and VD/VT significantly decreased (t =5.26, P=0.001) . No significant difference was found in PaO2/FiO2 and VD/VT at PPV 4 h to PPV 6 h. In ARDSexp group, PaO2/FiO2 significantly increased (t=4.65, P=0.04) and VD/VT significantly decreased (t=3.56, P=0.009) at PPV 2h. There was no significant change from PPV 2 h to PPV 4 h. PaO2/FiO2 and VD/VT remained at the same level at PPV 6 h. Conclusion VD/VT can be used as an effective index to evaluate the efficacy of PPV in patients with ARDS and is more sensitive than PaO2/FiO2, so it can be used to guide the treatment of patients with pulmonary and extrapulmonary ARDS. -
[1] [1]SUDS, FRIEDRICHJO, TACCONE P et al.Prone ventilation reduces mortality in patients with acute respiratory failure and severe hypoxemia:systematic review and meta-analysis[J].Intensive Care Med, 2010, 36 (4) :585-599. [2] [2]ABROUG F, OUANES, BESBES L, et al.An updated study-levelmeta-analysis of randomised controlled trials on proning in ARDS andacute lung injury[J].Crit Care, 2011, 15 (1) :R6. [3]马晓春, 王辰, 方强, 等.急性肺损伤/急性呼吸窘迫综合征诊断和治疗指南 (2006) [J].中华危重病急救医学, 2006, 16 (12) :1-6. [4] [4]VIEILLARD-BARON A, RABILLER A, CHERGUIK, et al.Prone position improves mechanics and alveolar ventilation inacute respiratory distress syndrome[J].Intensive Care Med, 2005, 31 (2) :220-226. [5] [5]GATTINONI L, VAGGINELLI F, CARLESSOE, et al.Decrease in Pa CO2with prone position ispredictive of improved outcome in acute respiratory distress syndrome[J].Crit Care Med, 2003, 31 (12) :2727-2733. [6] [6]NUCKTON T J, ALONSO J A, KALLETRH, et al.Pulmonary dead-space fraction as a risk factor for death inthe acute respiratory distress syndrome[J].N Engl J Med, 2002, 346 (17) :1281-1286. [7] [7]KALLETRH, ZHUOH, LIUKD, et al.The association between physiologic dead-space fraction and mortality in subjects with ARDS enrolled in a prospective multi-center clinical trial[J].Respir Care, 2014, 59 (11) :1611-1618. [8] [8]RAURIEH J M, VILAR M, COLORANT A, et al.Prognostic value of the pulmonary dead-space franfion during the early and intermediate phases of acute respiratory distress syndrome[J].Respir Care, 2010, 55 (3) :282-287. [9] [9]ZHANG Y J, GAO X J, LI Z B, et al.Comparison of the pulmonary dead-space fraction derived from ventilator volumetric capnography and a validated equation in the survival prediction of patients with acute respiratory distress syndrome[J].Chinese Journal of Traumatology, 2016, 19 (3) :141-145. [10] [10] RANIERIVM, RUBENFELDGD, THOMPSON B T, et al.acute respiratory distress syndrome:the berlin definition[J].JAMA, 2012, 307 (23) :2526-2533. [11] [11]MCAULEY D F, GILES S, FICHTER H, et al.What is the optimal duration of ventilation in the prone position in acute lung injury and acute respiratory distress syndrome[J].Intensive Care Medicine, 2002, 28 (4) :414-418. [12] [12]VENDER R L, BETANCOURT M F, LEHMAN E B, et al.Prediction equation to estimate dead space to tidal volume fraction correlates with mortality in critically ill patients.[J].Journal of Critical Care, 2014, 29 (2) :1-3. [13] [13]CHARRONC, REPESSEX, BOUFERRACHE K, et al.PaCO2and alveolar dead space are more relevant than Pa O2/Fi O2ratio in monitoring the respiratory response to prone position in ARDS patients:a physiological study[J].Crit Care, 2011, 15 (4) :R175. [14] [14]LIM C M, KIMEK, LEEJS, et al.Comparison of the response to the prone position between pulmonary and extrapulmonary acute respiratory distresssyndrome[J].Intensive Care Med, 2001, 27 (3) :477-485. [15] [15]ROCCO P R, ZINWA.Pulmonary and extrapulmonary acute respiratory distress syndrome:are they different[J].Curr Opin Crit Care, 2005, 11 (1) :7-10. [16] [16]ROCCO P R, PELOSI P.Pulmonary and extrapulmonary acute respiratory distress syndrome:myth or reality[J].Current Opinion in Critical Care, 2008, 14 (1) :50-55. [17] [17]MENEZES S L, BOZZA P T, NETO H C, et al.Pulmonary and extrapulmonary acute lung injury:inflammatory and ultrastructural analyses[J].Journal of Applied Physiology, 2005, 98 (5) :1777-1783. [18] [18]DESAI S R.Acute respiratory distress syndrome:imaging of the injured lung[J].Clinical Radiology, 2002, 57 (9) :8-17. [19] [19]RIALP G, BETBES A J, PREZ-MRQUEZ M, et al.Short-term effects of inhaled nitric oxide and prone position in pulmonary and extrapulmonary acute respiratory distress syndrome[J].American Journal of Respiratory&Critical Care Medicine, 2001, 164 (2) :243-249. [20] [20]XU Y, DENG X, HAN Y, et al.A Multicenter retrospective review of prone position ventilation (PPV) in treatment of severe human H7N9 avian flu[J].Plos One, 2015, 10 (8) :e0136520.
点击查看大图
计量
- 文章访问数: 1696
- HTML全文浏览量: 593
- PDF下载量: 79
- 被引次数: 0