mechanicalventilationofcopd-ppt课件-PPT精选文档.ppt
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1、COPD的机械通气的机械通气Vt,FiO2,what else?北京协和医院杜斌COPD患者的肺泡过度充盈患者的肺泡过度充盈Sutherland ER,Cherniack RM.Management of Chronic Obstructive Pulmonary Disease.N Engl J Med 2019;350:2689-97时间常数时间常数()=R x C测定肺组织充盈或排空的速度反映肺组织对压力变化的反应速度时间常数时间常数()Time/Tau吸气相吸气相呼气相呼气相Pressure时间常数时间常数()PA(t)=(Pplat-PEEP)e-kte=2.718k=1/=1/(R
2、 x C)V(t)=Vt x e-kte=2.718k=1/=1/(R x C)时间常数时间常数()时间常数成人(正常值)2 x 0.10=0.20”术后气管插管成人患者5 x 0.06=0.30”COPD成人患者15 x 0.06=0.90”ARDS成人患者8 x 0.03=0.24”ARDS患儿5 x 0.01=0.05”Tau呼出气容积残余容积00%100%163%37%395%5%599.9%0.1%动态过度充盈动态过度充盈:DHIinspexpTimeTidal volumeTrapped gasLung VolumeFRCObstructed LungsNormal Stiff L
3、ungs机械通气的适应证机械通气的适应证:COPD呼吸肌疲劳且濒临呼吸停止尽管进行充分的保守治疗,PaCO2仍进行性升高劳累和(或)高碳酸血症导致意识状态恶化高浓度吸氧治疗无效的低氧血症痰液清除障碍导致病情恶化呼吸骤停COPD患者的病理生理改变患者的病理生理改变内源性PEEP过高n肺泡过度膨胀n胸腔内压过高 回心血量减少 休克机械通气时的机械通气时的PEEPiVt 10 12 ml/kg,f 12 15 bpm,I:E 1:2 3诊断No.PEEPi(范围)发生率COPD452.6 2245/45(100%)CF1111/1(100%)Asthma313.5 203/3(100%)ARDS28
4、1.0 8.115/28(58%)CPE101.0 6.08/10(80%)Other101.0 4.15/10(50%)DHI和和PEEPi的影响因素的影响因素内在因素内在因素外部因素外部因素呼吸力学附加气流阻力气流阻力气管插管管径过细呼气气流受限呼吸机管路和相关装置呼吸系统顺应性呼吸机设置呼吸方式呼吸频率呼吸频率I:ETi/Ttot潮气量潮气量吸气末暂停DHI和和PEEPi的影响因素的影响因素内在因素内在因素外部因素外部因素呼吸力学附加气流阻力气流阻力气管插管管径过细呼气气流受限呼吸机管路和相关装置呼吸系统顺应性呼吸机设置呼吸方式呼吸频率呼吸频率I:ETi/Ttot潮气量潮气量吸气末暂停机
5、械通气参数的设置机械通气参数的设置:COPD潮气量吸气流速吸呼比/吸气时间/呼气时间呼吸频率COPD:不同吸气气流的比较不同吸气气流的比较Shieh Ching Yang,MD,FCCP;and Sze Piao Yang.Effects of Inspiratory Flow Waveforms on Lung Mechanics,Gas Exchange,and Respiratory Metabolism in COPD Patients During Mechanical Ventilation.Chest 2019;122:20962104COPD:不同吸气气流的比较不同吸气气流的比
6、较波形(均值 SD)呼吸机参数恒定气流1正弦波减速气流恒定气流2Vt,ml562 67558 65566 59571 72RR,bpm18.2 1.718.6 1.418.4 1.918.5 1.3MV,lpm10.4 1.610.3 1.510.6 1.610.7 1.8Ti/Ttot0.29 0.040.28 0.030.29 0.040.28 0.03平均吸气流速,lpm38 537 739 738 6Shieh Ching Yang,MD,FCCP;and Sze Piao Yang.Effects of Inspiratory Flow Waveforms on Lung Mecha
7、nics,Gas Exchange,and Respiratory Metabolism in COPD Patients During Mechanical Ventilation.Chest 2019;122:20962104COPD:不同吸气气流的比较不同吸气气流的比较波形(均值 SD)呼吸力学参数恒定气流1正弦波减速气流恒定气流2PIP,cmH2O47.1 11.547.8 10.839.5 9.746.6 11.0Paw,cmH2O7.6 4.27.2 4.88.4 4.58.4 3.9Pplat,cmH2O20.2 9.119.6 10.618.9 8.821.4 10.4Vd/V
8、t,%58.4 5.254.5 6.348.6 5.557.6 4.9Cst,ml/cmH2O35.3 8.935.8 11.236.6 9.337.2 9.7Shieh Ching Yang,MD,FCCP;and Sze Piao Yang.Effects of Inspiratory Flow Waveforms on Lung Mechanics,Gas Exchange,and Respiratory Metabolism in COPD Patients During Mechanical Ventilation.Chest 2019;122:20962104COPD:不同吸气气流
9、的比较不同吸气气流的比较波形(均值 SD)恒定气流1正弦波减速气流恒定气流2pH7.44 0.047.44 0.077.43 0.067.44 0.04PaO2/FiO2,mmHg236 73231 65223 70227 67PaCO2,mmHg45 1045 1037 946 12A-aDO2,mmHg133.1 36.5136.4 34.2156.3 33.7134.4 35.3HR,bpm106.1 18.1108.3 20.2105.3 18.9109.9 20.5MAP,mmHg92 2388 1888 2190 19Shieh Ching Yang,MD,FCCP;and Sze
10、 Piao Yang.Effects of Inspiratory Flow Waveforms on Lung Mechanics,Gas Exchange,and Respiratory Metabolism in COPD Patients During Mechanical Ventilation.Chest 2019;122:20962104COPD:不同吸气气流的比较不同吸气气流的比较波形(均值 SD)参数恒定气流1正弦波减速气流恒定气流2WOB,J/L0.92 0.160.88 0.180.75 0.150.92 0.18Raw,cmH2O/L/s12.6 3.112.4 3.6
11、11.2 2.412.5 3.3VO2,ml/min384 53389 60377 49382 52VCO2,ml/min274 52280 47273 56276 55症状评分54.5 13.458.6 11.942.7 12.356.1 12.8Shieh Ching Yang,MD,FCCP;and Sze Piao Yang.Effects of Inspiratory Flow Waveforms on Lung Mechanics,Gas Exchange,and Respiratory Metabolism in COPD Patients During Mechanical V
12、entilation.Chest 2019;122:20962104COPD:不同吸气气流的比较不同吸气气流的比较结论COPD患者机械通气的最佳吸气气流为减速气流通过选择适宜的吸气气流,有可能改善上述患者的通气Shieh Ching Yang,MD,FCCP;and Sze Piao Yang.Effects of Inspiratory Flow Waveforms on Lung Mechanics,Gas Exchange,and Respiratory Metabolism in COPD Patients During Mechanical Ventilation.Chest 201
13、9;122:20962104COPD机械通气策略机械通气策略降低内源性PEEP的方法n外源性PEEP?n延长呼气时间u增加吸气流速u缩短吸气末暂停u降低呼吸频率呼气流速呼气流速PalvPEEPFlow=P/Raw=(Palv PEEP)/RawFlowPEEP与呼气流速与呼气流速Savian C,Chan P,Paratz J.The Effect of Positive End-Expiratory Pressure Level on Peak Expiratory Flow During Manual Hyperinflation.Anesth Analg 2019;100:1112-6C
14、ompliancePEEP与呼气流速与呼气流速Savian C,Chan P,Paratz J.The Effect of Positive End-Expiratory Pressure Level on Peak Expiratory Flow During Manual Hyperinflation.Anesth Analg 2019;100:1112-6Compliance P Flow PEEP与呼气流速与呼气流速Savian C,Chan P,Paratz J.The Effect of Positive End-Expiratory Pressure Level on Peak
15、Expiratory Flow During Manual Hyperinflation.Anesth Analg 2019;100:1112-6半径半径PEEPPEEP与呼气流速与呼气流速Savian C,Chan P,Paratz J.The Effect of Positive End-Expiratory Pressure Level on Peak Expiratory Flow During Manual Hyperinflation.Anesth Analg 2019;100:1112-6PEEP半径半径流速流速?P 流速流速 PEEP与呼气流速与呼气流速Savian C,Cha
16、n P,Paratz J.The Effect of Positive End-Expiratory Pressure Level on Peak Expiratory Flow During Manual Hyperinflation.Anesth Analg 2019;100:1112-6PEEP与呼气流速与呼气流速Savian C,Chan P,Paratz J.The Effect of Positive End-Expiratory Pressure Level on Peak Expiratory Flow During Manual Hyperinflation.Anesth A
17、nalg 2019;100:1112-6PEEP与呼气流速与呼气流速Savian C,Chan P,Paratz J.The Effect of Positive End-Expiratory Pressure Level on Peak Expiratory Flow During Manual Hyperinflation.Anesth Analg 2019;100:1112-6半径半径PEEP与呼气流速与呼气流速Savian C,Chan P,Paratz J.The Effect of Positive End-Expiratory Pressure Level on Peak Exp
18、iratory Flow During Manual Hyperinflation.Anesth Analg 2019;100:1112-6半径半径 Flow PEEP与呼气流速与呼气流速Savian C,Chan P,Paratz J.The Effect of Positive End-Expiratory Pressure Level on Peak Expiratory Flow During Manual Hyperinflation.Anesth Analg 2019;100:1112-6半径半径 PEEPPEEP与呼气流速与呼气流速Savian C,Chan P,Paratz J
19、.The Effect of Positive End-Expiratory Pressure Level on Peak Expiratory Flow During Manual Hyperinflation.Anesth Analg 2019;100:1112-6PEEP半径半径 流速流速 P 流速流速 COPD稳定期患者稳定期患者(n=9)年龄(yr)70 7.3FEV1(%pred)30 9.5FVC(%pred)53 13.6RV(%pred)186 33.1FEV1/VC(%)44 11.6TLC(%pred)103 8.7TLCO(%pred)46 25.4PaO2(kPa)7
20、.4 0.4PaCO2(kPa)7.1 1.1pH7.40 0.00ODonoghue FJ,Catcheside PG,Jordan AS,Bersten AD,McEvoy RD.Effect of CPAP on intrinsic PEEP,inspiratory effort,and lung volume in severe stable COPD.Thorax 2019;57:533-539COPD稳定期稳定期:PEEPODonoghue FJ,Catcheside PG,Jordan AS,Bersten AD,McEvoy RD.Effect of CPAP on intri
21、nsic PEEP,inspiratory effort,and lung volume in severe stable COPD.Thorax 2019;57:533-539COPD稳定期稳定期:PEEPODonoghue FJ,Catcheside PG,Jordan AS,Bersten AD,McEvoy RD.Effect of CPAP on intrinsic PEEP,inspiratory effort,and lung volume in severe stable COPD.Thorax 2019;57:533-539COPD稳定期稳定期:PEEPODonoghue F
22、J,Catcheside PG,Jordan AS,Bersten AD,McEvoy RD.Effect of CPAP on intrinsic PEEP,inspiratory effort,and lung volume in severe stable COPD.Thorax 2019;57:533-539COPD稳定期稳定期:PEEPODonoghue FJ,Catcheside PG,Jordan AS,Bersten AD,McEvoy RD.Effect of CPAP on intrinsic PEEP,inspiratory effort,and lung volume
23、in severe stable COPD.Thorax 2019;57:533-539COPD稳定期稳定期:PEEPODonoghue FJ,Catcheside PG,Jordan AS,Bersten AD,McEvoy RD.Effect of CPAP on intrinsic PEEP,inspiratory effort,and lung volume in severe stable COPD.Thorax 2019;57:533-539COPD稳定期稳定期:PEEPODonoghue FJ,Catcheside PG,Jordan AS,Bersten AD,McEvoy R
24、D.Effect of CPAP on intrinsic PEEP,inspiratory effort,and lung volume in severe stable COPD.Thorax 2019;57:533-539COPD稳定期稳定期:PEEPODonoghue FJ,Catcheside PG,Jordan AS,Bersten AD,McEvoy RD.Effect of CPAP on intrinsic PEEP,inspiratory effort,and lung volume in severe stable COPD.Thorax 2019;57:533-539总
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