目的:探讨俯卧位机械通气对肺炎并发呼吸衰竭患儿氧合和肺力学的影响。方法:对80例肺炎并发呼吸衰竭患儿采取自身对照的方法分别仰卧位-俯卧位各4h,共8h,记录并分析患儿呼吸机参数、动脉血气和肺力学改变。结果:在呼吸机参数改变无显著...目的:探讨俯卧位机械通气对肺炎并发呼吸衰竭患儿氧合和肺力学的影响。方法:对80例肺炎并发呼吸衰竭患儿采取自身对照的方法分别仰卧位-俯卧位各4h,共8h,记录并分析患儿呼吸机参数、动脉血气和肺力学改变。结果:在呼吸机参数改变无显著性差异的情况下,机械通气患儿进行自身对照,俯卧位4h的PO2较仰卧位4h高(70.93±13.36mmHg vs 66.43±11.86mmHg,P<0.05);俯卧位4h的氧合指数较仰卧位下降4.89±1.05vs5.20±1.14,P<0.05),俯卧位4h的肺泡动脉氧分压差较仰卧位减小(104.33±34.19mmHg vs121.80±36.40mmHg,P<0.05)。俯卧位4h的潮气量、每分钟通气量和肺动态顺应性与仰卧位4h相比有改善(P=0.002,0.023,0.001);俯卧位时气管阻力同仰卧位相比无显著性差异(P=0.060)。结论:机械通气患儿采取俯卧位时较传统仰卧位相比,可改善氧合、提高PO2和氧合指数及肺泡动脉氧分压差,并可增加每分钟通气量和潮气量,改善肺动态顺应性。展开更多
OBJECTIVE: To investigate the impact of proportional assist ventilation (PAV) on tolerance and breathlessness in ventilated chronic obstructive pulmonary disease (COPD), and to describe the patient-ventilator interact...OBJECTIVE: To investigate the impact of proportional assist ventilation (PAV) on tolerance and breathlessness in ventilated chronic obstructive pulmonary disease (COPD), and to describe the patient-ventilator interaction, hemodynamic state, breathing pattern and work of breath during PAV and pressure support ventilation (PSV). METHODS: Ten intubated COPD patients on weaning from mechanical ventilation were studied. Elastance and resistance were measured by both the inspiratory-hold technique during a brief period of volume control ventilation and runaway technique during PAV. Each assistance level of PAV (80%, 60% and 40%) and PSV was selected randomly. Patients' response, hemodynamics, blood gas and lung mechanics were monitored. RESULTS: Tidal volume and respiratory rate didn't change in a consistent manner as the level of assist was decreased (P > 0.05). With the level of assist increasing, peak inspiratory pressure was increasing significantly (P展开更多
目的分析不同压力水平无创面罩BiPAP通气治疗慢性阻塞性肺疾病急性加重期(AECOPD)伴Ⅱ型呼吸衰竭的疗效。方法选择2015年1月至2017年6月晋城市人民医院收治的AECOPD伴Ⅱ型呼吸衰竭的患者120例为研究对象,采用随机数字表法分为三组,每组4...目的分析不同压力水平无创面罩BiPAP通气治疗慢性阻塞性肺疾病急性加重期(AECOPD)伴Ⅱ型呼吸衰竭的疗效。方法选择2015年1月至2017年6月晋城市人民医院收治的AECOPD伴Ⅱ型呼吸衰竭的患者120例为研究对象,采用随机数字表法分为三组,每组40例。三组均给予无创面罩BiPAP通气治疗,其中A组吸气压力设置为10~14 cmH2O,B组吸气压力设置为15~19 cmH2O,C组吸气压力设置为20~25 cmH2O。对比三组临床治疗疗效及血气指标变化。结果采用重复测量方差分析比较不同组间三个时间点PaO2水平,结果显示,治疗后24 h A组、B组、C组分别为(57.15±5.03)mmHg、(60.28±5.21)mmHg、(58.38±6.06)mmHg;治疗后72 h A组、B组、C组分别为(63.02±6.08)mmHg、(80.16±5.28)mmHg、(70.07±5.23)mmHg;治疗后168 h A组、B组、C组分别为(70.11±6.07)mmHg、(86.35±5.01)mmHg、(79.26±5.16)mmHg。不同组别PaO2差异有统计学意义(F=8.514,P<0.001),不同时间点PaO2差异有统计学意义(F=13.681,P<0.001),组别(不同处理方式)和时间点之间存在交互作用(F=9.872,P<0.001)。PaCO2、PaO2/FiO2在组别和时间点之间均存在交互作用(均P<0.001)。采用秩和检验对三组疗效比较,Z值为17.512(P<0.001),采用切割概率法进行两两比较得出:B组治疗显效率(92.50%)明显高于A组(80.00%)和C组(80.00%)(P<0.012)。结论15~19 cmH2O为吸气压可显著提高AECOPD伴Ⅱ型呼吸衰竭接受无创面罩BiPAP治疗的效果,且随时间延长,对血气指标改善效果更佳。展开更多
文摘目的:探讨俯卧位机械通气对肺炎并发呼吸衰竭患儿氧合和肺力学的影响。方法:对80例肺炎并发呼吸衰竭患儿采取自身对照的方法分别仰卧位-俯卧位各4h,共8h,记录并分析患儿呼吸机参数、动脉血气和肺力学改变。结果:在呼吸机参数改变无显著性差异的情况下,机械通气患儿进行自身对照,俯卧位4h的PO2较仰卧位4h高(70.93±13.36mmHg vs 66.43±11.86mmHg,P<0.05);俯卧位4h的氧合指数较仰卧位下降4.89±1.05vs5.20±1.14,P<0.05),俯卧位4h的肺泡动脉氧分压差较仰卧位减小(104.33±34.19mmHg vs121.80±36.40mmHg,P<0.05)。俯卧位4h的潮气量、每分钟通气量和肺动态顺应性与仰卧位4h相比有改善(P=0.002,0.023,0.001);俯卧位时气管阻力同仰卧位相比无显著性差异(P=0.060)。结论:机械通气患儿采取俯卧位时较传统仰卧位相比,可改善氧合、提高PO2和氧合指数及肺泡动脉氧分压差,并可增加每分钟通气量和潮气量,改善肺动态顺应性。
文摘OBJECTIVE: To investigate the impact of proportional assist ventilation (PAV) on tolerance and breathlessness in ventilated chronic obstructive pulmonary disease (COPD), and to describe the patient-ventilator interaction, hemodynamic state, breathing pattern and work of breath during PAV and pressure support ventilation (PSV). METHODS: Ten intubated COPD patients on weaning from mechanical ventilation were studied. Elastance and resistance were measured by both the inspiratory-hold technique during a brief period of volume control ventilation and runaway technique during PAV. Each assistance level of PAV (80%, 60% and 40%) and PSV was selected randomly. Patients' response, hemodynamics, blood gas and lung mechanics were monitored. RESULTS: Tidal volume and respiratory rate didn't change in a consistent manner as the level of assist was decreased (P > 0.05). With the level of assist increasing, peak inspiratory pressure was increasing significantly (P
文摘目的分析不同压力水平无创面罩BiPAP通气治疗慢性阻塞性肺疾病急性加重期(AECOPD)伴Ⅱ型呼吸衰竭的疗效。方法选择2015年1月至2017年6月晋城市人民医院收治的AECOPD伴Ⅱ型呼吸衰竭的患者120例为研究对象,采用随机数字表法分为三组,每组40例。三组均给予无创面罩BiPAP通气治疗,其中A组吸气压力设置为10~14 cmH2O,B组吸气压力设置为15~19 cmH2O,C组吸气压力设置为20~25 cmH2O。对比三组临床治疗疗效及血气指标变化。结果采用重复测量方差分析比较不同组间三个时间点PaO2水平,结果显示,治疗后24 h A组、B组、C组分别为(57.15±5.03)mmHg、(60.28±5.21)mmHg、(58.38±6.06)mmHg;治疗后72 h A组、B组、C组分别为(63.02±6.08)mmHg、(80.16±5.28)mmHg、(70.07±5.23)mmHg;治疗后168 h A组、B组、C组分别为(70.11±6.07)mmHg、(86.35±5.01)mmHg、(79.26±5.16)mmHg。不同组别PaO2差异有统计学意义(F=8.514,P<0.001),不同时间点PaO2差异有统计学意义(F=13.681,P<0.001),组别(不同处理方式)和时间点之间存在交互作用(F=9.872,P<0.001)。PaCO2、PaO2/FiO2在组别和时间点之间均存在交互作用(均P<0.001)。采用秩和检验对三组疗效比较,Z值为17.512(P<0.001),采用切割概率法进行两两比较得出:B组治疗显效率(92.50%)明显高于A组(80.00%)和C组(80.00%)(P<0.012)。结论15~19 cmH2O为吸气压可显著提高AECOPD伴Ⅱ型呼吸衰竭接受无创面罩BiPAP治疗的效果,且随时间延长,对血气指标改善效果更佳。