目的分析有创机械通气脱机后序贯经鼻高流量氧疗(HFNC)的特点及治疗失败的危险因素.方法选择2016年6月1日至2018年5月31日北京大学人民医院外科重症医学科(ICU)有创机械通气脱机后序贯HFNC治疗的患者.收集患者一般临床资料、呼吸治疗相...目的分析有创机械通气脱机后序贯经鼻高流量氧疗(HFNC)的特点及治疗失败的危险因素.方法选择2016年6月1日至2018年5月31日北京大学人民医院外科重症医学科(ICU)有创机械通气脱机后序贯HFNC治疗的患者.收集患者一般临床资料、呼吸治疗相关参数、呼吸生理相关指标、循环相关指标及结局指标,分析脱机后序贯HFNC的治疗特点.根据HFNC失败与否将患者分为HFNC失败组与HFNC成功组,比较两组各项指标的差异;采用多因素Logistic回归分析HFNC治疗失败的独立危险因素,并对各危险因素和回归模型预估值预测治疗失败的价值进行受试者工作特征曲线(ROC)分析.结果共纳入99例患者,男性61例,中位年龄67.0(57.0,76.0)岁.HFNC初始治疗流速为50(50,60)L/min,吸入氧浓度(FiO2)为0.50(0.40,0.60).有18例患者(18.2%)HFNC治疗失败.与HFNC成功组相比,HFNC失败组序贯器官衰竭评分(SOFA)更高〔分:4(3,5)比2(1,3),P<0.01〕,治疗前血B型利钠肽(BNP)水平更高〔ng/L:647.2(399.2,1 331.3)比127.2(55.2,369.5),P<0.01〕,HFNC治疗30 min呼吸频率(RR)和心率(HR)更快〔RR(次/min):26(22,28)比19(17,21),HR(次/min):105(97,107)比85(77,90),均P<0.01〕,平均动脉压(MAP)更高〔mmHg(1 mmHg=0.133 kPa):104.3(101.7,110.7)比92.3(88.3,97.7),P<0.01〕,氧合指数(PaO2/FiO2)更低〔mmHg:207.3(185.8,402.8)比320.2(226.2,361.5),P<0.05〕.多因素Logistic回归分析显示,SOFA评分〔优势比(OR)=2.818,P=0.022,β=1.036〕、治疗前BNP(OR=1.002,P=0.033,β=0.002)和治疗30 min HR(OR=1.140,P=0.032,β=0.131)为HFNC治疗失败的独立危险因素.ROC曲线分析显示,SOFA、治疗前BNP、治疗30 min HR和Logistic回归模型预估值预测HFNC失败的ROC曲线下面积(AUC)分别为0.840、0.859、0.860和0.962,均有较好的预测价值(均P<0.01).结论脱机后序贯HFNC治疗是ICU常用的氧疗手段之一,但并不是所有患者都能从中获益;SOFA评分、治疗前BNP和治疗30 min HR为外科ICU有创机械通气患者脱展开更多
BACKGROUND: Because the continuity and integrity of the trachea are likely damaged to some extent after tracheostomy, the implementation of sequential ventilation has certain difficulties, and sequential invasive-noni...BACKGROUND: Because the continuity and integrity of the trachea are likely damaged to some extent after tracheostomy, the implementation of sequential ventilation has certain difficulties, and sequential invasive-noninvasive ventilation on patients after tracheostomy is less common in practice. The present study aimed to investigate the feasibility of invasive-noninvasive sequential weaning strategy in patients after tracheostomy.METHODS: Fifty patients including 24 patients with withdrawal of mechanical ventilation(conventional group) and 26 patients with sequential invasive-noninvasive weaning by directly plugging of tracheostomy(sequential group) were analyzed retrospectively after appearance of pulmonary infection control(PIC) window. The analysis of arterial blood gases, ventilator-associated pneumonia(VAP) incidence, the total duration of mechanical ventilation, the success rate of weaning and total cost of hospitalization were compared between the two groups.RESULTS: Arterial blood gas analysis showed that the sequential weaning group was better than the conventional weaning group 1 and 24 hours after invasive ventilation. The VAP incidence was lowered, the duration of mechanical ventilation shortened, the success rate of weaning increased, and the total cost of hospitalization decreased.CONCLUSION: Sequential invasive-noninvasive ventilator weaning is feasible in patients after tracheostomy.展开更多
目的探讨自主呼吸试验(SBT)前后ROX指数对呼吸衰竭患者撤机失败预测及阈值效应。方法选择2017年8月至2022年9月海军安庆医院收治的87例ICU进行机械通气的呼吸衰竭患者作为研究对象,依据是否成功撤机分为撤机失败组(n=40)和撤机成功组(n=...目的探讨自主呼吸试验(SBT)前后ROX指数对呼吸衰竭患者撤机失败预测及阈值效应。方法选择2017年8月至2022年9月海军安庆医院收治的87例ICU进行机械通气的呼吸衰竭患者作为研究对象,依据是否成功撤机分为撤机失败组(n=40)和撤机成功组(n=47),比较两组患者的一般资料及SBT前后的临床指标。采用单因素和多因素Logistic回归分析患者撤机失败的独立影响因素。建立平滑拟合曲线,对ROX指数与呼吸衰竭患者撤机失败关系进行阈值效应分析。构建贝叶斯网络模型,使用Netica软件进行贝叶斯网络推理,并对模型效能进行评价。结果两组在呼吸道疾病、急性生理学和慢性健康状况评估Ⅱ(APACHEⅡ)评分、第1次插管到拔管的持续时间、血红蛋白(Hb)之间差异有统计学意义(P<0.05)。撤机失败组患者动脉血二氧化碳分压(PaCO 2)、N端脑钠肽前体(NT-proBNP)明显高于撤机成功组(P<0.05),左室射血分数(LVEF)明显低于撤机成功组(P<0.05);SBT后30 min撤机失败组ROX指数明显低于撤机成功组(P<0.05)。多因素Logistic回归分析显示,第1次插管到拔管持续时间、NT-proBNP、LVEF、SBT后30 min ROX指数为呼吸衰竭患者撤机失败的独立影响因素(P<0.05)。平滑拟合曲线显示,ROX指数与呼吸衰竭患者撤机失败的概率呈负相关,但两者之间并非简单的线性关系。阈值效应分析结果显示,呼吸衰竭患者撤机失败下降的折点为6.35,ROX指数≥6.35的患者撤机失败的概率随ROX指数的升高而降低[OR=0.785,95%CI 0.632~0.972,P<0.001]。构建的贝叶斯网络模型的一致性指数(C-index)为0.864(95%CI 0.847~0.885),受试者工作特征(ROC)曲线下面积(AUC)为0.868(95%CI 0.835~0.890),模型具有较高的准确性和区分度。当风险阈值概率在0.10~0.98时,模型识别呼吸衰竭患者撤机失败风险可产生临床净获益,有较高的临床应用价值。结论SBT后30 min ROX指数对呼吸衰竭机械通气患�展开更多
Invasive mechanical ventilation(IMV)has become integral to modern-day critical care.Even though critically ill patients frequently require IMV support,weaning from IMV remains an arduous task,with the reported weaning...Invasive mechanical ventilation(IMV)has become integral to modern-day critical care.Even though critically ill patients frequently require IMV support,weaning from IMV remains an arduous task,with the reported weaning failure(WF)rates being as high as 50%.Optimizing the timing for weaning may aid in reducing time spent on the ventilator,associated adverse effects,patient discomfort,and medical care costs.Since weaning is a complex process and WF is often multifactorial,several weaning scores have been developed to predict WF and aid decision-making.These scores are based on the patient's physiological and ventilatory parameters,but each has limitations.This review highlights the current role and limitations of the various clinical prediction scores available to predict WF.展开更多
文摘目的分析有创机械通气脱机后序贯经鼻高流量氧疗(HFNC)的特点及治疗失败的危险因素.方法选择2016年6月1日至2018年5月31日北京大学人民医院外科重症医学科(ICU)有创机械通气脱机后序贯HFNC治疗的患者.收集患者一般临床资料、呼吸治疗相关参数、呼吸生理相关指标、循环相关指标及结局指标,分析脱机后序贯HFNC的治疗特点.根据HFNC失败与否将患者分为HFNC失败组与HFNC成功组,比较两组各项指标的差异;采用多因素Logistic回归分析HFNC治疗失败的独立危险因素,并对各危险因素和回归模型预估值预测治疗失败的价值进行受试者工作特征曲线(ROC)分析.结果共纳入99例患者,男性61例,中位年龄67.0(57.0,76.0)岁.HFNC初始治疗流速为50(50,60)L/min,吸入氧浓度(FiO2)为0.50(0.40,0.60).有18例患者(18.2%)HFNC治疗失败.与HFNC成功组相比,HFNC失败组序贯器官衰竭评分(SOFA)更高〔分:4(3,5)比2(1,3),P<0.01〕,治疗前血B型利钠肽(BNP)水平更高〔ng/L:647.2(399.2,1 331.3)比127.2(55.2,369.5),P<0.01〕,HFNC治疗30 min呼吸频率(RR)和心率(HR)更快〔RR(次/min):26(22,28)比19(17,21),HR(次/min):105(97,107)比85(77,90),均P<0.01〕,平均动脉压(MAP)更高〔mmHg(1 mmHg=0.133 kPa):104.3(101.7,110.7)比92.3(88.3,97.7),P<0.01〕,氧合指数(PaO2/FiO2)更低〔mmHg:207.3(185.8,402.8)比320.2(226.2,361.5),P<0.05〕.多因素Logistic回归分析显示,SOFA评分〔优势比(OR)=2.818,P=0.022,β=1.036〕、治疗前BNP(OR=1.002,P=0.033,β=0.002)和治疗30 min HR(OR=1.140,P=0.032,β=0.131)为HFNC治疗失败的独立危险因素.ROC曲线分析显示,SOFA、治疗前BNP、治疗30 min HR和Logistic回归模型预估值预测HFNC失败的ROC曲线下面积(AUC)分别为0.840、0.859、0.860和0.962,均有较好的预测价值(均P<0.01).结论脱机后序贯HFNC治疗是ICU常用的氧疗手段之一,但并不是所有患者都能从中获益;SOFA评分、治疗前BNP和治疗30 min HR为外科ICU有创机械通气患者脱
基金supported by the fund for clinical research project(2015xkj086)
文摘BACKGROUND: Because the continuity and integrity of the trachea are likely damaged to some extent after tracheostomy, the implementation of sequential ventilation has certain difficulties, and sequential invasive-noninvasive ventilation on patients after tracheostomy is less common in practice. The present study aimed to investigate the feasibility of invasive-noninvasive sequential weaning strategy in patients after tracheostomy.METHODS: Fifty patients including 24 patients with withdrawal of mechanical ventilation(conventional group) and 26 patients with sequential invasive-noninvasive weaning by directly plugging of tracheostomy(sequential group) were analyzed retrospectively after appearance of pulmonary infection control(PIC) window. The analysis of arterial blood gases, ventilator-associated pneumonia(VAP) incidence, the total duration of mechanical ventilation, the success rate of weaning and total cost of hospitalization were compared between the two groups.RESULTS: Arterial blood gas analysis showed that the sequential weaning group was better than the conventional weaning group 1 and 24 hours after invasive ventilation. The VAP incidence was lowered, the duration of mechanical ventilation shortened, the success rate of weaning increased, and the total cost of hospitalization decreased.CONCLUSION: Sequential invasive-noninvasive ventilator weaning is feasible in patients after tracheostomy.
文摘目的探讨自主呼吸试验(SBT)前后ROX指数对呼吸衰竭患者撤机失败预测及阈值效应。方法选择2017年8月至2022年9月海军安庆医院收治的87例ICU进行机械通气的呼吸衰竭患者作为研究对象,依据是否成功撤机分为撤机失败组(n=40)和撤机成功组(n=47),比较两组患者的一般资料及SBT前后的临床指标。采用单因素和多因素Logistic回归分析患者撤机失败的独立影响因素。建立平滑拟合曲线,对ROX指数与呼吸衰竭患者撤机失败关系进行阈值效应分析。构建贝叶斯网络模型,使用Netica软件进行贝叶斯网络推理,并对模型效能进行评价。结果两组在呼吸道疾病、急性生理学和慢性健康状况评估Ⅱ(APACHEⅡ)评分、第1次插管到拔管的持续时间、血红蛋白(Hb)之间差异有统计学意义(P<0.05)。撤机失败组患者动脉血二氧化碳分压(PaCO 2)、N端脑钠肽前体(NT-proBNP)明显高于撤机成功组(P<0.05),左室射血分数(LVEF)明显低于撤机成功组(P<0.05);SBT后30 min撤机失败组ROX指数明显低于撤机成功组(P<0.05)。多因素Logistic回归分析显示,第1次插管到拔管持续时间、NT-proBNP、LVEF、SBT后30 min ROX指数为呼吸衰竭患者撤机失败的独立影响因素(P<0.05)。平滑拟合曲线显示,ROX指数与呼吸衰竭患者撤机失败的概率呈负相关,但两者之间并非简单的线性关系。阈值效应分析结果显示,呼吸衰竭患者撤机失败下降的折点为6.35,ROX指数≥6.35的患者撤机失败的概率随ROX指数的升高而降低[OR=0.785,95%CI 0.632~0.972,P<0.001]。构建的贝叶斯网络模型的一致性指数(C-index)为0.864(95%CI 0.847~0.885),受试者工作特征(ROC)曲线下面积(AUC)为0.868(95%CI 0.835~0.890),模型具有较高的准确性和区分度。当风险阈值概率在0.10~0.98时,模型识别呼吸衰竭患者撤机失败风险可产生临床净获益,有较高的临床应用价值。结论SBT后30 min ROX指数对呼吸衰竭机械通气患�
文摘Invasive mechanical ventilation(IMV)has become integral to modern-day critical care.Even though critically ill patients frequently require IMV support,weaning from IMV remains an arduous task,with the reported weaning failure(WF)rates being as high as 50%.Optimizing the timing for weaning may aid in reducing time spent on the ventilator,associated adverse effects,patient discomfort,and medical care costs.Since weaning is a complex process and WF is often multifactorial,several weaning scores have been developed to predict WF and aid decision-making.These scores are based on the patient's physiological and ventilatory parameters,but each has limitations.This review highlights the current role and limitations of the various clinical prediction scores available to predict WF.
