BACKGROUND:Early withdrawal of invasive mechanical ventilation(IMV) followed by noninvasive MV(NIMV) is a new strategy for changing modes of treatment in patients with acute exacerbations of chronic obstructive pulmon...BACKGROUND:Early withdrawal of invasive mechanical ventilation(IMV) followed by noninvasive MV(NIMV) is a new strategy for changing modes of treatment in patients with acute exacerbations of chronic obstructive pulmonary disease(AECOPD) with acute respiratory failure(ARF).Using pulmonary infection control window(PIC window) as the switch point for transferring from invasive to noninvasive MV,the time for early extubation can be more accurately judged,and therapy efficacy can be improved.This study aimed to prospectively investigate the clinical effectiveness of fiberoptic bronchscopy(FOB) in patients with AECOPD during sequential weaning of invasive-noninvasive MV.METHODS:Since July 2006 to January 2011,106 AECOPD patients with ARF were treated with comprehensive medication and IMV after hospitalization.Patients were randomly divided into two groups according to whether fiberoptic bronchoscope is used(group A,n=54) or not(group B,n=52) during sequential weaning from invasive to noninvasive MV.In group A,for sputum suction and bronchoalveolar lavage(BAL),a fiberoptic bronchoscope was put into the airway from the outside of an endotracheal tube,which was accompanied with uninterrupted use of a ventilator.After achieving PIC window,patients of both groups changed to NIMV mode,and weaned from ventilation.The following listed indices were used to compare between the groups after treatment:1) the occurrence time of PIC,the duration of MV,the length of ICU stay,the success rate of weaning from MV for the first time,the rate of reventilatJon and the occurrence rate of ventilator-associated pneumonia(VAP);2) the convenience and safety of FOB manipulation.The results were compared using Student's f test and the Chi-square test.RESULTS:The occurrence time of PIC was(5.01 ±1.49) d,(5.87±1.87) d in groups A and B,respectively(P<0.05);the duration of MV was(6.98±1.84) d,(8.69±2.41) d in groups A and B,respectively(P<0.01);the length of ICU stay was(9.25±1.84) d,(11.10±2.63) d in groups A and B,respectively(P<0.01);the success rate of weaning for the first time was 96.30%,76.92%in groups A and B,respectively(P<0.01);the rate of reventilation was 5.56%,19.23%in groups A and B,respectively(P<0.05);and the occurrence rate of VAP was 3.70%,23.07%in groups A and B,respectively(P<0.01).Moreover,it was easy and safe to manipulate FOB,and no side effect was observed.CONCLUSIONS:The application of FOB in patients with AECOPD during sequential weaning of invasive-noninvasive MV is effective in ICU.It can decrease the duration of MV and the length of ICU stay,increase the success rate from weaning MV for the first time,reduce the rate of reventilation and the occurrence rate of VAP.In addition,such a method is convenient and safe in patients of this kind.展开更多
Background:We did a retrospective analysis of critical coronavirus disease 2019(COVID-19)patients admitted to our intensive care unit(ICU).The objective was to evaluate the outcome,risk factors and effect of prone pos...Background:We did a retrospective analysis of critical coronavirus disease 2019(COVID-19)patients admitted to our intensive care unit(ICU).The objective was to evaluate the outcome,risk factors and effect of prone position in critically ill patients requiring invasive mechanical ventilation(IMV).Patients and methods:The data were collected regarding demographics,comorbidities,laboratory parameters and treatment.Logistic regression was used for analysis of the association of risk factors to the outcome.Results:From 15 March to 30 May 2020,35(59.3%)out of 59 critical COVID-19 requiring IMV were admitted to a tertiary care hospital in Dubai.The day-28 ICU mortality was 28.8% and 48.6% in patients requiring IMV.Prone position(PP)was used in 17(48.6%)patients for median duration of 19(5-20)hours with significant PaO_(2)/FiO_(2) improvement.Acute kidney injury was common(30.5%),and half of the patients required renal replacement therapy(RRT)with higher mortality(77.8%).Lactate dehydrogenase(LDH)odd ratio(OR)-1.006[95%CI-1.00-1.01],D-dimer(OR-1.003[1.000-1.000]),low total leucocyte count(OR-1.135[1.01-1.28]),and lymphopenia(OR-0.909[0.84-0.98])were independently associated with increased risk of IMV.Conclusions:IMV requirement in patients with COVID-19 is associated with higher mortality.Inflammatory markers like LDH,D-dimer,and lymphopenia can be used to predict the prognosis.The patients with COVID-19 on IMV respond significantly with prone position,and it should be considered early with a longer duration.展开更多
Background Severe acute respiratory syndrome is frequently complicated by respiratory failure requiring ventilatory support.We aimed to compare the efficacy of non-invasive ventilation against invasive mechanical vent...Background Severe acute respiratory syndrome is frequently complicated by respiratory failure requiring ventilatory support.We aimed to compare the efficacy of non-invasive ventilation against invasive mechanical ventilation treating respiratory failure in this disease.Methods Retrospective analysis was conducted on all respiratory failure patients identified from the Hong Kong Hospital Authority Severe Acute Respiratory Syndrome Database.Intubation rate,mortality and secondary outcome of a hospital utilizing non-invasive ventilation under standard infection control conditions(NIV Hospita1)were compared against 13 hospitals using solely invasive ventilation(IMV Hospitals).Multiple logistic regression analyses with adjustments for confounding variables were performed to test for association between outcomes and hospital groups.Results Both hospital groups had comparable demographics and clinical profiles,but NIV Hospital(42 patients)had higher lactate dehydrogenase ratio and worse radiographic score on admission and ribavirin-corticosteroid commencement.Compared to IMV Hospitals(451 patients).NIV Hospital had lower adjusted odds ratios for intubation(0.36,95%C10.164-0.791,P=0.011)and death(0.235.95%C10.077-0.716,P=0.O 11),and improved earlier after pulsed steroid rescue.There were no instances of transmission of severe acute respiratory syndrome among health care workers due to the use of non-invasive ventilation.Conclusion Compared to invasive mechanical ventilation,non-invasive ventilation as initial ventilatory support for acute respiratory failure in the presence of severe acute respiratory syndrome appeared to be associated with reduced intubation need and mortality.展开更多
Recently,there has been growing interest in knowing the best hygrometry level during high-flow nasal oxygen and non-invasive ventilation(NIV)and its potential influence on the outcome.Various studies have shown that b...Recently,there has been growing interest in knowing the best hygrometry level during high-flow nasal oxygen and non-invasive ventilation(NIV)and its potential influence on the outcome.Various studies have shown that breathing cold and dry air results in excessive water loss by nasal mucosa,reduced mucociliary clearance,in-creased airway resistance,reduced epithelial cell function,increased inflammation,sloughing of tracheal epithe-lium,and submucosal inflammation.With the Coronavirus Disease 2019 pandemic,using high-flow nasal oxygen with a heated humidifier has become an emerging form of non-invasive support among clinicians.However,we cannot always assume stable humidification.Similarly,there are no clear guidelines for using humidification dur-ing NIV,although humidification of inspired gas during invasive ventilation is an accepted standard of care.NIV disturbs the normal physiological system that warms and humidifies inspired gases.If NIV is supplied through an intensive care unit ventilator that utilizes anhydrous gases from compressed wall air and oxygen,the risk of dry-ness increases.In addition,patients with acute respiratory failure tend to breathe through the mouth during NIV,which is a less efficient route than nasal breathing for adding heat and moisture to the inspired gas.Obstructive sleep apnea syndrome is one of the most important indications for chronic use of NIV at home.Available data suggest that up to 60%of patients with obstructive sleep apnea syndrome who use continuous positive airway pressure therapy experience nasal congestion and dryness of the mouth and nose.Therefore,humidifying the inspired gas in NIV may be essential for patient comfort and compliance with treatment.We aimed to review the available bench and clinical studies that addressed the utility of hygrometry in NIV and nasal high-flow oxygen and discuss the technical limitations of different humidification systems for both systems.展开更多
AIM:To identify risk factors predictive of intensive care unit(ICU) mortality in patients with ventilator-related pancreatitis.The clinical outcomes of patients with ventilator-related pancreatitis were compared with ...AIM:To identify risk factors predictive of intensive care unit(ICU) mortality in patients with ventilator-related pancreatitis.The clinical outcomes of patients with ventilator-related pancreatitis were compared with those of patients with pancreatitis-related respiratory failure as well as controls.METHODS:One hundred and forty-eight patients with respiratory failure requiring mechanical ventilation and concomitant acute pancreatitis were identified from a prospectively collected dataset of 9108 consecutive patients admitted with respiratory failure over a period of five years.Sixty patients met the criteria for ventilator-related pancreatitis,and 88(control patients),for pancreatitis-related respiratory failure.RESULTS:Mortality rate in ventilator-related pancreatitis was comparable to that in ICU patients without pancreatitis by case-control methodology(P=0.544).Multivariate logistic regression analysis identified low PaO2/FiO2(OR:1.032,95% CI:1.006-1.059,P=0.016) as an independent risk factor for mortality in patients with ventilator-related pancreatitis.The mortality rate in patients with ventilator-related pancreatitis was lower than that in patients with acute pancreatitis-related respiratory failure(P<0.001).CONCLUSION:We found that low PaO2/FiO2 was an independent clinical parameter predictive of ICU mortality in patients with ventilator-related pancreatitis.展开更多
Cancer patients account for 15%of all admissions to intensive care unit(ICU)and 5%will experience a critical illness resulting in ICU admission.Mortality rates have decreased during the last decades because of new ant...Cancer patients account for 15%of all admissions to intensive care unit(ICU)and 5%will experience a critical illness resulting in ICU admission.Mortality rates have decreased during the last decades because of new anticancer therapies and advanced organ support methods.Since early critical care and organ support is associated with improved survival,timely identification of the onset of clinical signs indicating critical illness is crucial to avoid delaying.This article focused on relevant and current information on epidemiology,diagnosis,and treatment of the main clinical disorders experienced by critically ill cancer patients.展开更多
Acute respiratory failure(ARF)in immunocompromised patients remains challenging to treat.A large number of case require admission to intensive care unit(ICU)where mortality remains high.Oxygenation without intubation ...Acute respiratory failure(ARF)in immunocompromised patients remains challenging to treat.A large number of case require admission to intensive care unit(ICU)where mortality remains high.Oxygenation without intubation is important in this setting.This review summarizes recent studies assessing oxygenation devices for immunocompromised patients.Previous studies showed that non-invasive ventilation(NIV)has been associated with lower intubation and mortality rates.Indeed,in recent years,the outcomes of immunocompromised patients admitted to the ICU have improved.In the most recent randomized controlled trials,including immunocompromised patients admitted to the ICU with ARF,neither NIV nor high-flow nasal oxygen(HFNO)could reduce the mortality rate.In this setting,other strategies need to be tested to decrease the mortality rate.Early admission strategy and avoiding late failure of oxygenation strategy have been assessed in retrospective studies.However,objective criteria are still lacking to clearly discriminate time to admission or time to intubation.Also,diagnosis strategy may have an impact on intubation or mortality rates.On the other hand,lack of diagnosis has been associated with a higher mortality rate.In conclusion,improving outcomes in immunocompromised patients with ARF may include strategies other than the oxygenation strategy alone.This review discusses other unresolved questions to decrease mortality after ICU admission in such patients.展开更多
文摘BACKGROUND:Early withdrawal of invasive mechanical ventilation(IMV) followed by noninvasive MV(NIMV) is a new strategy for changing modes of treatment in patients with acute exacerbations of chronic obstructive pulmonary disease(AECOPD) with acute respiratory failure(ARF).Using pulmonary infection control window(PIC window) as the switch point for transferring from invasive to noninvasive MV,the time for early extubation can be more accurately judged,and therapy efficacy can be improved.This study aimed to prospectively investigate the clinical effectiveness of fiberoptic bronchscopy(FOB) in patients with AECOPD during sequential weaning of invasive-noninvasive MV.METHODS:Since July 2006 to January 2011,106 AECOPD patients with ARF were treated with comprehensive medication and IMV after hospitalization.Patients were randomly divided into two groups according to whether fiberoptic bronchoscope is used(group A,n=54) or not(group B,n=52) during sequential weaning from invasive to noninvasive MV.In group A,for sputum suction and bronchoalveolar lavage(BAL),a fiberoptic bronchoscope was put into the airway from the outside of an endotracheal tube,which was accompanied with uninterrupted use of a ventilator.After achieving PIC window,patients of both groups changed to NIMV mode,and weaned from ventilation.The following listed indices were used to compare between the groups after treatment:1) the occurrence time of PIC,the duration of MV,the length of ICU stay,the success rate of weaning from MV for the first time,the rate of reventilatJon and the occurrence rate of ventilator-associated pneumonia(VAP);2) the convenience and safety of FOB manipulation.The results were compared using Student's f test and the Chi-square test.RESULTS:The occurrence time of PIC was(5.01 ±1.49) d,(5.87±1.87) d in groups A and B,respectively(P<0.05);the duration of MV was(6.98±1.84) d,(8.69±2.41) d in groups A and B,respectively(P<0.01);the length of ICU stay was(9.25±1.84) d,(11.10±2.63) d in groups A and B,respectively(P<0.01);the success rate of weaning for the first time was 96.30%,76.92%in groups A and B,respectively(P<0.01);the rate of reventilation was 5.56%,19.23%in groups A and B,respectively(P<0.05);and the occurrence rate of VAP was 3.70%,23.07%in groups A and B,respectively(P<0.01).Moreover,it was easy and safe to manipulate FOB,and no side effect was observed.CONCLUSIONS:The application of FOB in patients with AECOPD during sequential weaning of invasive-noninvasive MV is effective in ICU.It can decrease the duration of MV and the length of ICU stay,increase the success rate from weaning MV for the first time,reduce the rate of reventilation and the occurrence rate of VAP.In addition,such a method is convenient and safe in patients of this kind.
文摘Background:We did a retrospective analysis of critical coronavirus disease 2019(COVID-19)patients admitted to our intensive care unit(ICU).The objective was to evaluate the outcome,risk factors and effect of prone position in critically ill patients requiring invasive mechanical ventilation(IMV).Patients and methods:The data were collected regarding demographics,comorbidities,laboratory parameters and treatment.Logistic regression was used for analysis of the association of risk factors to the outcome.Results:From 15 March to 30 May 2020,35(59.3%)out of 59 critical COVID-19 requiring IMV were admitted to a tertiary care hospital in Dubai.The day-28 ICU mortality was 28.8% and 48.6% in patients requiring IMV.Prone position(PP)was used in 17(48.6%)patients for median duration of 19(5-20)hours with significant PaO_(2)/FiO_(2) improvement.Acute kidney injury was common(30.5%),and half of the patients required renal replacement therapy(RRT)with higher mortality(77.8%).Lactate dehydrogenase(LDH)odd ratio(OR)-1.006[95%CI-1.00-1.01],D-dimer(OR-1.003[1.000-1.000]),low total leucocyte count(OR-1.135[1.01-1.28]),and lymphopenia(OR-0.909[0.84-0.98])were independently associated with increased risk of IMV.Conclusions:IMV requirement in patients with COVID-19 is associated with higher mortality.Inflammatory markers like LDH,D-dimer,and lymphopenia can be used to predict the prognosis.The patients with COVID-19 on IMV respond significantly with prone position,and it should be considered early with a longer duration.
基金The authors wish to acknowledge the funding support for the HASARS Database on data collection and management from the Hong Kong Government’s Health,Welfare and Food Bureau and Research Fund for the Control of lnfectious Diseases.
文摘Background Severe acute respiratory syndrome is frequently complicated by respiratory failure requiring ventilatory support.We aimed to compare the efficacy of non-invasive ventilation against invasive mechanical ventilation treating respiratory failure in this disease.Methods Retrospective analysis was conducted on all respiratory failure patients identified from the Hong Kong Hospital Authority Severe Acute Respiratory Syndrome Database.Intubation rate,mortality and secondary outcome of a hospital utilizing non-invasive ventilation under standard infection control conditions(NIV Hospita1)were compared against 13 hospitals using solely invasive ventilation(IMV Hospitals).Multiple logistic regression analyses with adjustments for confounding variables were performed to test for association between outcomes and hospital groups.Results Both hospital groups had comparable demographics and clinical profiles,but NIV Hospital(42 patients)had higher lactate dehydrogenase ratio and worse radiographic score on admission and ribavirin-corticosteroid commencement.Compared to IMV Hospitals(451 patients).NIV Hospital had lower adjusted odds ratios for intubation(0.36,95%C10.164-0.791,P=0.011)and death(0.235.95%C10.077-0.716,P=0.O 11),and improved earlier after pulsed steroid rescue.There were no instances of transmission of severe acute respiratory syndrome among health care workers due to the use of non-invasive ventilation.Conclusion Compared to invasive mechanical ventilation,non-invasive ventilation as initial ventilatory support for acute respiratory failure in the presence of severe acute respiratory syndrome appeared to be associated with reduced intubation need and mortality.
文摘Recently,there has been growing interest in knowing the best hygrometry level during high-flow nasal oxygen and non-invasive ventilation(NIV)and its potential influence on the outcome.Various studies have shown that breathing cold and dry air results in excessive water loss by nasal mucosa,reduced mucociliary clearance,in-creased airway resistance,reduced epithelial cell function,increased inflammation,sloughing of tracheal epithe-lium,and submucosal inflammation.With the Coronavirus Disease 2019 pandemic,using high-flow nasal oxygen with a heated humidifier has become an emerging form of non-invasive support among clinicians.However,we cannot always assume stable humidification.Similarly,there are no clear guidelines for using humidification dur-ing NIV,although humidification of inspired gas during invasive ventilation is an accepted standard of care.NIV disturbs the normal physiological system that warms and humidifies inspired gases.If NIV is supplied through an intensive care unit ventilator that utilizes anhydrous gases from compressed wall air and oxygen,the risk of dry-ness increases.In addition,patients with acute respiratory failure tend to breathe through the mouth during NIV,which is a less efficient route than nasal breathing for adding heat and moisture to the inspired gas.Obstructive sleep apnea syndrome is one of the most important indications for chronic use of NIV at home.Available data suggest that up to 60%of patients with obstructive sleep apnea syndrome who use continuous positive airway pressure therapy experience nasal congestion and dryness of the mouth and nose.Therefore,humidifying the inspired gas in NIV may be essential for patient comfort and compliance with treatment.We aimed to review the available bench and clinical studies that addressed the utility of hygrometry in NIV and nasal high-flow oxygen and discuss the technical limitations of different humidification systems for both systems.
文摘目的:观察西维来司他钠治疗脓毒症伴急性呼吸窘迫综合征(acute respiratory distress syndrome,ARDS)的效果。方法:将阳江市人民医院2023年6—12月收治的脓毒症伴ARDS患者总计60例,以随机数字表法分成两组,各30例,其中一组以常规治疗为对照组,另一组以常规治疗配合西维来司他钠治疗为研究组,均治疗7 d。比较两组血清学指标(炎症指标、血小板计数、血气指标),急性生理和慢性健康状况Ⅱ(acute physiology and chronic health evaluationⅡ,APACHEⅡ)评分、肺损伤评分,序贯器官衰竭估计(sequential organ failure assessment,SOFA)评分,机械通气时间及病死率。结果:治疗前,两组炎症指标、血气指标、血小板计数、APACHEⅡ评分、肺损伤评分、SOFA评分相比,差异均无统计学意义(P>0.05);治疗后,两组血清炎症指标、动脉血二氧化碳分压、APACHEⅡ评分、肺损伤评分、SOFA评分均较治疗前显著下降,且研究组均低于对照组,动脉血氧饱和度及血小板计数均较治疗前提升,研究组均高于对照组,差异均有统计学意义(P<0.05)。研究组机械通气时间短于对照组,差异有统计学意义(P<0.05)。两组的14 d病死率相比,差异无统计学意义(P>0.05)。结论:脓毒症伴急性呼吸窘迫综合征患者在接受西维来司他钠治疗,可显著减轻患者的血清炎症指标水平,改善血气指标,减轻肺损伤,缩短患者的机械通气时间,效果理想。
文摘AIM:To identify risk factors predictive of intensive care unit(ICU) mortality in patients with ventilator-related pancreatitis.The clinical outcomes of patients with ventilator-related pancreatitis were compared with those of patients with pancreatitis-related respiratory failure as well as controls.METHODS:One hundred and forty-eight patients with respiratory failure requiring mechanical ventilation and concomitant acute pancreatitis were identified from a prospectively collected dataset of 9108 consecutive patients admitted with respiratory failure over a period of five years.Sixty patients met the criteria for ventilator-related pancreatitis,and 88(control patients),for pancreatitis-related respiratory failure.RESULTS:Mortality rate in ventilator-related pancreatitis was comparable to that in ICU patients without pancreatitis by case-control methodology(P=0.544).Multivariate logistic regression analysis identified low PaO2/FiO2(OR:1.032,95% CI:1.006-1.059,P=0.016) as an independent risk factor for mortality in patients with ventilator-related pancreatitis.The mortality rate in patients with ventilator-related pancreatitis was lower than that in patients with acute pancreatitis-related respiratory failure(P<0.001).CONCLUSION:We found that low PaO2/FiO2 was an independent clinical parameter predictive of ICU mortality in patients with ventilator-related pancreatitis.
文摘Cancer patients account for 15%of all admissions to intensive care unit(ICU)and 5%will experience a critical illness resulting in ICU admission.Mortality rates have decreased during the last decades because of new anticancer therapies and advanced organ support methods.Since early critical care and organ support is associated with improved survival,timely identification of the onset of clinical signs indicating critical illness is crucial to avoid delaying.This article focused on relevant and current information on epidemiology,diagnosis,and treatment of the main clinical disorders experienced by critically ill cancer patients.
文摘Acute respiratory failure(ARF)in immunocompromised patients remains challenging to treat.A large number of case require admission to intensive care unit(ICU)where mortality remains high.Oxygenation without intubation is important in this setting.This review summarizes recent studies assessing oxygenation devices for immunocompromised patients.Previous studies showed that non-invasive ventilation(NIV)has been associated with lower intubation and mortality rates.Indeed,in recent years,the outcomes of immunocompromised patients admitted to the ICU have improved.In the most recent randomized controlled trials,including immunocompromised patients admitted to the ICU with ARF,neither NIV nor high-flow nasal oxygen(HFNO)could reduce the mortality rate.In this setting,other strategies need to be tested to decrease the mortality rate.Early admission strategy and avoiding late failure of oxygenation strategy have been assessed in retrospective studies.However,objective criteria are still lacking to clearly discriminate time to admission or time to intubation.Also,diagnosis strategy may have an impact on intubation or mortality rates.On the other hand,lack of diagnosis has been associated with a higher mortality rate.In conclusion,improving outcomes in immunocompromised patients with ARF may include strategies other than the oxygenation strategy alone.This review discusses other unresolved questions to decrease mortality after ICU admission in such patients.