Objective: To investigate the clinical effects of the mask continuous positive airway pressure (CPAP) mechanical ventilation in children with severe pneumonia. Methods: A total of 100 cases of children with severe pne...Objective: To investigate the clinical effects of the mask continuous positive airway pressure (CPAP) mechanical ventilation in children with severe pneumonia. Methods: A total of 100 cases of children with severe pneumonia were randomly divided into two groups, study group with 50 children and control group with 50 children. These 100 children were given comprehensive treatment measures: treatment of anti-infection, anti-respiratory failure, anti-heart failure (if necessary), relieving cough and reducing sputum, aerosol inhalation, limited fluid volume, nutrition support etc. Children in the study group were added mask continuous positive airway pressure mechanical ventilation (CPAP). Children in the control group were added ordinary mask oxygen inhalation. Investigated and checked the treatment effect in these two groups. Results: After treatment, SaO2, PaO2 in both two groups were showed significantly higher than before the treatment. PaO2 of the study group is obviously higher than the control group. The oxygen inhalation time of the study group was obviously lesser than the control group. The total effective rate of the study group was significantly higher than the control group which was 96.0% vs 66.0%. Conclusion: The mask continuous positive airway pressure (CPAP) mechanical ventilation can significantly improve the related symptoms and blood gas status of the children with severe pneumonia, shorten the oxygen inhalation time and had remarkable effect.展开更多
BACKGROUND:We sought to evaluate the risk factors for developing ventilator-associated pneumonia(VAP)and whether the location of intubation posed a risk in trauma patients.METHODS:Data were retrospectively reviewed fo...BACKGROUND:We sought to evaluate the risk factors for developing ventilator-associated pneumonia(VAP)and whether the location of intubation posed a risk in trauma patients.METHODS:Data were retrospectively reviewed for adult trauma patients requiring intubation for>48 hours,admitted between 2010 and 2013.Patients’demographics,clinical presentations and outcomes were compared according to intubation location(prehospital intubation[PHI]vs.trauma room[TRI])and presence vs.absence of VAP.Multivariate regression analysis was performed to identify predictors of VAP.RESULTS:Of 471 intubated patients,332 patients met the inclusion criteria(124 had PHI and208 had TRI)with a mean age of 30.7±14.8 years.PHI group had lower GCS(P=0.001),respiratory rate(P=0.001),and higher frequency of head(P=0.02)and chest injuries(P=0.04).The rate of VAP in PHI group was comparable to the TRI group(P=0.60).Patients who developed VAP were 6 years older,had significantly lower GCS and higher ISS,head AIS,and higher rates of polytrauma.The overall mortality was 7.5%,and was not associated with intubation location or pneumonia rates.In the early-VAP group,gram-positive pathogens were more common,while gram-negative microorganisms were more frequently encountered in the late VAP group.Logistic regression analysis and modeling showed that the impact of the location of intubation in predicting the risk of VAP appeared only when chest injury was included in the models.CONCLUSION:In trauma,the risk of developing VAP is multifactorial.However,the location of intubation and presence of chest injury could play an important role.展开更多
Objective To assess whether the use of Tanreqing(TRQ)Injection could show improvements in time to extubation,intensive care unit(ICU)mortality,ventilator-associated events(VAEs)and infection-related ventilator associa...Objective To assess whether the use of Tanreqing(TRQ)Injection could show improvements in time to extubation,intensive care unit(ICU)mortality,ventilator-associated events(VAEs)and infection-related ventilator associated complication(IVAC)among patients receiving mechanical ventilation(MV).Methods A time-dependent cox-regression analysis was conducted using data from a well-established registry of healthcare-associated infections at ICUs in China.Patients receiving continuous MV for 3 days or more were included.A time-varying exposure definition was used for TRQ Injection,which were recorded on daily basis.The outcomes included time to extubation,ICU mortality,VAEs and IVAC.Time-dependent Cox models were used to compare the clinical outcomes between TRQ Injection and non-use,after controlling for the influence of comorbidities/conditions and other medications with both fixed and time-varying covariates.For the analyses of time to extubation and ICU mortality,Fine-Gray competing risk models were also used to measure competing risks and outcomes of interest.Results Overall,7,685 patients were included for the analyses of MV duration,and 7,273 patients for the analysis of ICU mortality.Compared to non-use,patients with TRQ Injection had a lower risk of ICU mortality(Hazards ratios(HR)0.761,95%CI,0.581–0.997),and was associated with a higher hazard for time to extubation(HR 1.105,95%CI,1.005–1.216),suggesting a beneficial effect on shortened time to extubation.No significant differences were observed between TRQ Injection and non-use regarding VAEs(HR 1.057,95%CI,0.912–1.225)and IVAC(HR 1.177,95%CI,0.929–1.491).The effect estimates were robust when using alternative statistic models,applying alternative inclusion and exclusion criteria,and handling missing data by alternative approaches.Conclusion Our findings suggested that the use of TRQ Injection might lower mortality and improve time to extubation among patients receiving MV,even after controlling for the factor that the use of TRQ changed over time.展开更多
AIM To evaluate the predictive capability of respiratory mechanics for the development of ventilator-associated pneumonia (VAP) and mortality in the intensive care unit(ICU) of a hospital in southern Brazil. METHODS A...AIM To evaluate the predictive capability of respiratory mechanics for the development of ventilator-associated pneumonia (VAP) and mortality in the intensive care unit(ICU) of a hospital in southern Brazil. METHODS A cohort study was conducted between, involving a sample of 120 individuals. Static measurements of compliance and resistance of the respiratory system in pressure-controlled ventilation (PCV) and volumecontrolled ventilation(VCV) modes in the 1 st and 5 th days of hospitalization were performed to monitor respiratory mechanics. The severity of the patients' illness was quantified by the Acute Physiology and Chronic Health Evaluation Ⅱ (APACHE Ⅱ). The diagnosis of VAP was made based on clinical, radiological and laboratory parameters.RESULTS The significant associations found for the development of VAP were APACHE Ⅱ scores above the average(P = 0.016), duration of MV (P = 0.001) and ICU length of stay above the average(P = 0.003), male gender(P = 0.004), and worsening of respiratory resistance in PCV mode(P = 0.010). Age above the average(P < 0.001), low level of oxygenation on day 1(P = 0.003) and day 5 (P = 0.004) and low lung compliance during VCV on day 1 (P = 0.032) were associated with death as the outcome.CONCLUSION The worsening of airway resistance in PCV mode indicated the possibility of early diagnosis of VAP. Low lung compliance during VCV and low oxygenation index were death-related prognostic indicators.展开更多
Background Tracheostomy should be considered to replace endotracheal intubation in patients requiring prolonged mechanical ventilation (MV). However, the optimal timing for tracheostomy is still a topic of debate. T...Background Tracheostomy should be considered to replace endotracheal intubation in patients requiring prolonged mechanical ventilation (MV). However, the optimal timing for tracheostomy is still a topic of debate. The present study aimed to investigate whether early percutaneous dilational tracheostomy (PDT) can reduce duration of MV, and to further verify whether early PDT can reduce sedative use, shorten intensive care unit (ICU) stay, decrease the incidence of ventilator associated pneumonia (VAP), and increase successful weaning and ICU discharge rate. Methods A prospective, randomized controlled trial was carried out in a surgical ICU from July 2008 to June 2011 in adult patients anticipated requiring prolonged MV via endotracheal intubation. Patients meeting the inclusion criteria were randomly assigned to the early PDT group or the late PDT group on day 3 of MV. The patients in the early PDT group were tracheostomized with PDT on day 3 of MV. The patients in the late PDT group were tracheostomized with PDT on day 15 of MV if they still needed MV. The primary endpoint was ventilator-free days at day 28 after randomization. The secondary endpoints were sedation-free days, ICU-free days, successful weaning and ICU discharge rate, and incidence of VAP at day 28 after randomization. The cumulative 60-day incidence of death after randomization was also analyzed. Results Total 119 patients were randomized to either the early PDT group (n=58) or the late PDT group (n=61). The ventilator-free days was significantly increased in the early PDT group than in the late PDT group ((9.57±5.64) vs. (7.38±6.17) days, P 〈0.05). The sedation-free days and ICU-free days were also significantly increased in the early PDT group than in the late PDT group (20.84±2.35 vs. 17.05±2.30 days, P 〈0.05; and 8.0 (interquartile range (IQR): 5.0-12.0) vs. 3.0 (IQR: 0-12.0) days, P 〈0.001 respectively). The successful weaning and ICU discharge rate was significantly higher in early PDT group than in late PDT group (74.1% vs. 55.7%, P 〈0.05; and 67.2% vs. 47.5%, P 〈0.05 respectively). VAP was observed in 17 patients (29.3%) in early PDT group and in 30 patients (49.2%) in late PDT group (P 〈0.05). There was no significant difference between the two groups in the cumulative 60-day incidence of death after randomization (P=0.949). Conclusions The early PDT resulted in more ventilator-free, sedation-free, and ICU-free days, higher successful weaning and ICU discharge rate, and lower incidence of VAP, but did not change the cumulative 60-day incidence of death in the patients' anticipated requiring prolonged mechanical ventilation.展开更多
BACKGROUND Patients with cancer have several risk factors for developing respiratory failure requiring mechanical ventilation(MV).The emergence of multidrug resistant bacteria(MDRB)has become a public health problem,c...BACKGROUND Patients with cancer have several risk factors for developing respiratory failure requiring mechanical ventilation(MV).The emergence of multidrug resistant bacteria(MDRB)has become a public health problem,creating a new burden on medical care in hospitals,particularly for patients admitted to the intensive care unit(ICU).AIM To describe risk factors for ventilator-acquired pneumonia(VAP)in patients with cancer and to evaluate the impact of MDRB.METHODS A retrospective study was performed from January 2016 to December 2018 at a cancer referral center in Mexico City,which included all patients who were admitted to the ICU and required MV≥48 h.They were classified as those who developed VAP versus those who did not;pathogens isolated,including MDRB.Clinical evolution at 60-d was assessed.Descriptive analysis was carried out;comparison was performed between VAP vs non-VAP and MDRB vs non-MDRB.RESULTS Two hundred sixty-three patients were included in the study;mean age was 51.9 years;52.1%were male;68.4%had solid tumors.There were 32 episodes of VAP with a rate of 12.2%;11.5 episodes/1000 ventilation-days.The most frequent bacteria isolated were the following:Klebsiella spp.[n=9,four were Extended-Spectrum Beta-Lactamase(ESBL)producers,one was Carbapenem-resistant(CR)];Escherichia coli(n=5,one was ESBL),and Pseudomonas aeruginosa(n=8,two were CR).One Methicillin-susceptible Staphylococcus aureus was identified.In multivariate analysis,the sole risk factor associated for VAP was length of ICU stay(OR=1.1;95%CI:1.03-1.17;P=0.003).Sixty-day mortality was 53%in VAP and 43%without VAP(P=0.342).There was not higher mortality in those patients with MDRB.CONCLUSION This study highlights the high percentage of Gram-negative bacteria,which allows the initiation of empiric antibiotic coverage for these pathogens.In this retrospective,single center,observational study,MDRB VAP was not directly linked to increased mortality at 60 days.展开更多
Background:Ventilator-associated pneumonia (VAP) in neonates has been associated with high mortality and poor outcome.This study aimed to compare the incidence,risk factors,and outcomes of VAP and nonVAP conditions in...Background:Ventilator-associated pneumonia (VAP) in neonates has been associated with high mortality and poor outcome.This study aimed to compare the incidence,risk factors,and outcomes of VAP and nonVAP conditions in neonates.Methods:We performed a prospective cohort study in a neonatal intensive care unit (NICU) in Thailand from January 2014 to December 2014.All neonatal patients who were ventilated more than 48 hours were enrolled.Results:There were 128 enrolled patients.The median (inter quartile range) gestational age and birthweight were 35 (30.2,37.8) weeks and 2380 (1323.8,3020.0) g.There were 17 VAP patients (19 episodes) and 111 non-VAP ones.The VAP rate was 13.3% or 10.1 per 1000 ventilator days.According to the multivariate analysis,a birthweight less than 750 g [adjusted odds ratio (aOR)=10.75,95% confidence interval (CI)=2.35-49.16;P=0.002] and sedative medication use (aOR=4.00,95% CI=1.23-12.50;P=0.021)were independent risk factors for VAP.Compared with the non-VAP group,the median difference in the VAP group yielded a significantly longer duration of NICU stay (18 days,P=0.001),total length of hospital stay (16 days,P=0.002) and higher hospital costs ($5113,P=0.001).The inhospital mortality rate in the VAP and non-VAP groups was 17.6% and 15.3% (P=0.73),respectively.Conclusions:A neonatal birthweight less than 750 g and sedative medication use were independent risk factors for VAP.Our VAP patients experienced a longer duration of both NICU and hospital stay,and incurred higher hospitalization costs.展开更多
BACKGROUND The pathophysiological characteristics of severe pneumonia complicated by respiratory failure comprise pulmonary parenchymal changes leading to ventilation imbalance,alveolar capillary injury,pulmonary edem...BACKGROUND The pathophysiological characteristics of severe pneumonia complicated by respiratory failure comprise pulmonary parenchymal changes leading to ventilation imbalance,alveolar capillary injury,pulmonary edema,refractory hypoxemia,and reduced lung compliance.Prolonged hypoxia can cause acid-base balance disorder,peripheral circulatory failure,blood-pressure reduction,arrhythmia,and other adverse consequences.AIM To investigate sequential mechanical ventilation’s effect on severe pneumonia complicated by respiratory failure.METHODS We selected 108 patients with severe pneumonia complicated by respiratory failure who underwent mechanical ventilation between January 2018 and September 2020 at the Luhe Hospital’s Intensive Care Unit and divided them into sequential and regular groups according to a randomized trial,with each group comprising 54 patients.The sequential group received invasive and non-invasive sequential mechanical ventilation,whereas the regular group received invasive mechanical ventilation.Blood-gas parameters,hemodynamic parameters,respiratory mechanical parameters,inflammatory factors,and treatment outcomes were compared between the two groups before and after mechanical-ventilation treatment.RESULTS The arterial oxygen partial pressure and stroke volume variation values of the sequential group at 24,48,and 72 h of treatment were higher than those of the conventional group(P<0.05).The carbon dioxide partial pressure value of the sequential group at 72 h of treatment and the Raw value of the treatment group at 24 and 48 h were lower than those of the conventional group(P<0.05).The pH value of the sequential group at 24 and 72 h of treatment,the central venous pressure value of the treatment at 24 h,and the Cst value of the treatment at 24 and 48 h were higher than those of the conventional group(P<0.05).The tidal volume in the sequential group at 24 h of treatment was higher than that in the conventional group(P<0.05),the measured values of interleukin-6 and tumor necrosis factor-αin the sequential group at 72 h of treatment were lower than those in the conventional group(P<0.05),and the total time of mechanical ventilation in the sequential group was shorter than that in the conventional group,with a statistically significant difference(P<0.05).CONCLUSION Treating severe pneumonia complicated by respiratory failure with sequential mechanical ventilation is more effective in improving respiratory system compliance,reducing inflammatory response,maintaining hemodynamic stability,and improving patient blood-gas levels;however,from this study’s perspective,it cannot reduce patient mortality.展开更多
Objective: Ventilator associated pneumonia (VAP) has been shown to be associated with significant morbidity and mortality( Chastre and Fagon, 2002; klompas, 2007) among mechanically venti- lated patients in the i...Objective: Ventilator associated pneumonia (VAP) has been shown to be associated with significant morbidity and mortality( Chastre and Fagon, 2002; klompas, 2007) among mechanically venti- lated patients in the intensive care unit (ICU), with the incidence ranging from 9% to 27% ; crude mortality ranges from 25% to 50%.1-3 A meta-analysis of published studies was undertaken to combine information regarding the effect of subglottic secretion drainage (SSD) on the incidence of ventilated associated pneumonia in adult ICU patients. Methods: Reports of studies on SSD were identified by searching the PUBMED, EMBASE, and COCHRANCE LIBRARY databases (December 30, 2010). Randomized trials of SSD compared to usual care in adult mechanically ventilated ICU patients were included in this meta-analysis. Results: Ten RCTs with 2,314 patients were identified. SSD significantly reduced the incidence of VAP [ relative risk (RR) =0.52, 95% confidence interval (C/): 0.42-0.64, P〈0.000 01]. When SSD was compared with the control groups, the overall RR for ICU mortality was 1.00 (95% CI, 0.84-1.19) and for hospital mortality was 0.95 (95% CI, 0. 80-1.13). Overall, the subglottic drainage effect on the days of mechanical ventilation was -1.52 days (95% CI, -2.94 to -0.11) and on the ICU length of stay (LOS) was -0.81days (95% CI, -2.33 to -0.7). Conclusions: In this meta-analysis, when an endotracheal tube (ETT) with SSD was compared with an ETT without SSD, there was a highly significant reduction in the VAP rate of approxi- mately 50%. Time on mechanical ventilation (MV) and the ICU LOS may be reduced, but no reduction in ICU or hospital mortality has been observed in published trials,展开更多
The aim of this prospective study was to evaluate the incidence, etiologic agents and mortality rate of ventilator-associated pneumonia (VAP). In a six-month period, cases who were 18 years or older, dependent on mech...The aim of this prospective study was to evaluate the incidence, etiologic agents and mortality rate of ventilator-associated pneumonia (VAP). In a six-month period, cases who were 18 years or older, dependent on mechanical ventilator for more than 3 days and without pulmonary infection on first admission were included in this study. In all cases, body temperature recordings, blood and urine culture, microbiological analyses of endotracheal aspirates, and chest X-rays were obtained and used to identify VAP. Apache II scores on admission, duration of mechanical ventilation, length of intensive care unit (ICU) stay and mortality were recorded. This study included 45 cases and 22 developed VAP (48%). The incidence of VAP was 25.34 per 1000 ventilator days. Univariate analyses showed that duration of mechanical ventilation, length of ICU stay, coma and tracheotomy were associated with the development of VAP. The mortality rate of cases with VAP (72.7%) was significantly higher than cases without VAP (39.1%). The most frequent microorganisms were Acinetobacter spp., Pseudomonas aeruginosa and Klebsiella pneumoniae. In our study, VAP was a very common and important complication of mechanical ventilation and mortality was very high. To reduce mortality, minimize morbidity, shorten the length of stay, and reduce costs, defined risk factors for VAP should be recognized and an effective infection control program for the prevention of VAP should be implemented. Surveillance results should be evaluated regularly and necessary precautions should be taken.展开更多
Mechanical ventilation(MV)is a life-support therapy that may predispose to morbid and lethal complications,with ventilator-associated pneumonia(VAP)being the most prevalent.In 2013,the Center for Disease Control(CDC)d...Mechanical ventilation(MV)is a life-support therapy that may predispose to morbid and lethal complications,with ventilator-associated pneumonia(VAP)being the most prevalent.In 2013,the Center for Disease Control(CDC)defined criteria for ventilator-associated events(VAE).Ten years later,a growing number of studies assessing or validating its clinical applicability and the potential benefits of its inclusion have been published.Surveillance with VAE criteria is retrospective and the focus is often on a subset of patients with higher thanlower severity.To date,it is estimated that around 30%of ventilated patients in the intensive care unit(ICU)develop VAE.While surveillance enhances the detection of infectious and non-infectious MV-related complicationsthat are severe enough to impact the patient’s outcomes,there are still many gaps in its classification and management.In this review,we provide an update by discussing VAE etiologies,epidemiology,and classification.Preventive strategies on optimizing ventilation,sedative and neuromuscular blockade therapy,and restrictivefluid management are warranted.An ideal VAE bundle is likely to minimize the period of intubation.We believethat it is time to progress from just surveillance to clinical care.Therefore,with this review,we have aimed toprovide a roadmap for future research on the subject.展开更多
文摘Objective: To investigate the clinical effects of the mask continuous positive airway pressure (CPAP) mechanical ventilation in children with severe pneumonia. Methods: A total of 100 cases of children with severe pneumonia were randomly divided into two groups, study group with 50 children and control group with 50 children. These 100 children were given comprehensive treatment measures: treatment of anti-infection, anti-respiratory failure, anti-heart failure (if necessary), relieving cough and reducing sputum, aerosol inhalation, limited fluid volume, nutrition support etc. Children in the study group were added mask continuous positive airway pressure mechanical ventilation (CPAP). Children in the control group were added ordinary mask oxygen inhalation. Investigated and checked the treatment effect in these two groups. Results: After treatment, SaO2, PaO2 in both two groups were showed significantly higher than before the treatment. PaO2 of the study group is obviously higher than the control group. The oxygen inhalation time of the study group was obviously lesser than the control group. The total effective rate of the study group was significantly higher than the control group which was 96.0% vs 66.0%. Conclusion: The mask continuous positive airway pressure (CPAP) mechanical ventilation can significantly improve the related symptoms and blood gas status of the children with severe pneumonia, shorten the oxygen inhalation time and had remarkable effect.
文摘BACKGROUND:We sought to evaluate the risk factors for developing ventilator-associated pneumonia(VAP)and whether the location of intubation posed a risk in trauma patients.METHODS:Data were retrospectively reviewed for adult trauma patients requiring intubation for>48 hours,admitted between 2010 and 2013.Patients’demographics,clinical presentations and outcomes were compared according to intubation location(prehospital intubation[PHI]vs.trauma room[TRI])and presence vs.absence of VAP.Multivariate regression analysis was performed to identify predictors of VAP.RESULTS:Of 471 intubated patients,332 patients met the inclusion criteria(124 had PHI and208 had TRI)with a mean age of 30.7±14.8 years.PHI group had lower GCS(P=0.001),respiratory rate(P=0.001),and higher frequency of head(P=0.02)and chest injuries(P=0.04).The rate of VAP in PHI group was comparable to the TRI group(P=0.60).Patients who developed VAP were 6 years older,had significantly lower GCS and higher ISS,head AIS,and higher rates of polytrauma.The overall mortality was 7.5%,and was not associated with intubation location or pneumonia rates.In the early-VAP group,gram-positive pathogens were more common,while gram-negative microorganisms were more frequently encountered in the late VAP group.Logistic regression analysis and modeling showed that the impact of the location of intubation in predicting the risk of VAP appeared only when chest injury was included in the models.CONCLUSION:In trauma,the risk of developing VAP is multifactorial.However,the location of intubation and presence of chest injury could play an important role.
基金Supported by the National Natural Science Foundation of China(No.72104155)Postdoctoral Research Project,West China Hospital,Sichuan University(No.2020HXBH148)the 1•3•5 Project for Disciplines of Excellence,West China Hospital,Sichuan University(No.ZYYC08003)。
文摘Objective To assess whether the use of Tanreqing(TRQ)Injection could show improvements in time to extubation,intensive care unit(ICU)mortality,ventilator-associated events(VAEs)and infection-related ventilator associated complication(IVAC)among patients receiving mechanical ventilation(MV).Methods A time-dependent cox-regression analysis was conducted using data from a well-established registry of healthcare-associated infections at ICUs in China.Patients receiving continuous MV for 3 days or more were included.A time-varying exposure definition was used for TRQ Injection,which were recorded on daily basis.The outcomes included time to extubation,ICU mortality,VAEs and IVAC.Time-dependent Cox models were used to compare the clinical outcomes between TRQ Injection and non-use,after controlling for the influence of comorbidities/conditions and other medications with both fixed and time-varying covariates.For the analyses of time to extubation and ICU mortality,Fine-Gray competing risk models were also used to measure competing risks and outcomes of interest.Results Overall,7,685 patients were included for the analyses of MV duration,and 7,273 patients for the analysis of ICU mortality.Compared to non-use,patients with TRQ Injection had a lower risk of ICU mortality(Hazards ratios(HR)0.761,95%CI,0.581–0.997),and was associated with a higher hazard for time to extubation(HR 1.105,95%CI,1.005–1.216),suggesting a beneficial effect on shortened time to extubation.No significant differences were observed between TRQ Injection and non-use regarding VAEs(HR 1.057,95%CI,0.912–1.225)and IVAC(HR 1.177,95%CI,0.929–1.491).The effect estimates were robust when using alternative statistic models,applying alternative inclusion and exclusion criteria,and handling missing data by alternative approaches.Conclusion Our findings suggested that the use of TRQ Injection might lower mortality and improve time to extubation among patients receiving MV,even after controlling for the factor that the use of TRQ changed over time.
文摘AIM To evaluate the predictive capability of respiratory mechanics for the development of ventilator-associated pneumonia (VAP) and mortality in the intensive care unit(ICU) of a hospital in southern Brazil. METHODS A cohort study was conducted between, involving a sample of 120 individuals. Static measurements of compliance and resistance of the respiratory system in pressure-controlled ventilation (PCV) and volumecontrolled ventilation(VCV) modes in the 1 st and 5 th days of hospitalization were performed to monitor respiratory mechanics. The severity of the patients' illness was quantified by the Acute Physiology and Chronic Health Evaluation Ⅱ (APACHE Ⅱ). The diagnosis of VAP was made based on clinical, radiological and laboratory parameters.RESULTS The significant associations found for the development of VAP were APACHE Ⅱ scores above the average(P = 0.016), duration of MV (P = 0.001) and ICU length of stay above the average(P = 0.003), male gender(P = 0.004), and worsening of respiratory resistance in PCV mode(P = 0.010). Age above the average(P < 0.001), low level of oxygenation on day 1(P = 0.003) and day 5 (P = 0.004) and low lung compliance during VCV on day 1 (P = 0.032) were associated with death as the outcome.CONCLUSION The worsening of airway resistance in PCV mode indicated the possibility of early diagnosis of VAP. Low lung compliance during VCV and low oxygenation index were death-related prognostic indicators.
文摘Background Tracheostomy should be considered to replace endotracheal intubation in patients requiring prolonged mechanical ventilation (MV). However, the optimal timing for tracheostomy is still a topic of debate. The present study aimed to investigate whether early percutaneous dilational tracheostomy (PDT) can reduce duration of MV, and to further verify whether early PDT can reduce sedative use, shorten intensive care unit (ICU) stay, decrease the incidence of ventilator associated pneumonia (VAP), and increase successful weaning and ICU discharge rate. Methods A prospective, randomized controlled trial was carried out in a surgical ICU from July 2008 to June 2011 in adult patients anticipated requiring prolonged MV via endotracheal intubation. Patients meeting the inclusion criteria were randomly assigned to the early PDT group or the late PDT group on day 3 of MV. The patients in the early PDT group were tracheostomized with PDT on day 3 of MV. The patients in the late PDT group were tracheostomized with PDT on day 15 of MV if they still needed MV. The primary endpoint was ventilator-free days at day 28 after randomization. The secondary endpoints were sedation-free days, ICU-free days, successful weaning and ICU discharge rate, and incidence of VAP at day 28 after randomization. The cumulative 60-day incidence of death after randomization was also analyzed. Results Total 119 patients were randomized to either the early PDT group (n=58) or the late PDT group (n=61). The ventilator-free days was significantly increased in the early PDT group than in the late PDT group ((9.57±5.64) vs. (7.38±6.17) days, P 〈0.05). The sedation-free days and ICU-free days were also significantly increased in the early PDT group than in the late PDT group (20.84±2.35 vs. 17.05±2.30 days, P 〈0.05; and 8.0 (interquartile range (IQR): 5.0-12.0) vs. 3.0 (IQR: 0-12.0) days, P 〈0.001 respectively). The successful weaning and ICU discharge rate was significantly higher in early PDT group than in late PDT group (74.1% vs. 55.7%, P 〈0.05; and 67.2% vs. 47.5%, P 〈0.05 respectively). VAP was observed in 17 patients (29.3%) in early PDT group and in 30 patients (49.2%) in late PDT group (P 〈0.05). There was no significant difference between the two groups in the cumulative 60-day incidence of death after randomization (P=0.949). Conclusions The early PDT resulted in more ventilator-free, sedation-free, and ICU-free days, higher successful weaning and ICU discharge rate, and lower incidence of VAP, but did not change the cumulative 60-day incidence of death in the patients' anticipated requiring prolonged mechanical ventilation.
文摘BACKGROUND Patients with cancer have several risk factors for developing respiratory failure requiring mechanical ventilation(MV).The emergence of multidrug resistant bacteria(MDRB)has become a public health problem,creating a new burden on medical care in hospitals,particularly for patients admitted to the intensive care unit(ICU).AIM To describe risk factors for ventilator-acquired pneumonia(VAP)in patients with cancer and to evaluate the impact of MDRB.METHODS A retrospective study was performed from January 2016 to December 2018 at a cancer referral center in Mexico City,which included all patients who were admitted to the ICU and required MV≥48 h.They were classified as those who developed VAP versus those who did not;pathogens isolated,including MDRB.Clinical evolution at 60-d was assessed.Descriptive analysis was carried out;comparison was performed between VAP vs non-VAP and MDRB vs non-MDRB.RESULTS Two hundred sixty-three patients were included in the study;mean age was 51.9 years;52.1%were male;68.4%had solid tumors.There were 32 episodes of VAP with a rate of 12.2%;11.5 episodes/1000 ventilation-days.The most frequent bacteria isolated were the following:Klebsiella spp.[n=9,four were Extended-Spectrum Beta-Lactamase(ESBL)producers,one was Carbapenem-resistant(CR)];Escherichia coli(n=5,one was ESBL),and Pseudomonas aeruginosa(n=8,two were CR).One Methicillin-susceptible Staphylococcus aureus was identified.In multivariate analysis,the sole risk factor associated for VAP was length of ICU stay(OR=1.1;95%CI:1.03-1.17;P=0.003).Sixty-day mortality was 53%in VAP and 43%without VAP(P=0.342).There was not higher mortality in those patients with MDRB.CONCLUSION This study highlights the high percentage of Gram-negative bacteria,which allows the initiation of empiric antibiotic coverage for these pathogens.In this retrospective,single center,observational study,MDRB VAP was not directly linked to increased mortality at 60 days.
文摘Background:Ventilator-associated pneumonia (VAP) in neonates has been associated with high mortality and poor outcome.This study aimed to compare the incidence,risk factors,and outcomes of VAP and nonVAP conditions in neonates.Methods:We performed a prospective cohort study in a neonatal intensive care unit (NICU) in Thailand from January 2014 to December 2014.All neonatal patients who were ventilated more than 48 hours were enrolled.Results:There were 128 enrolled patients.The median (inter quartile range) gestational age and birthweight were 35 (30.2,37.8) weeks and 2380 (1323.8,3020.0) g.There were 17 VAP patients (19 episodes) and 111 non-VAP ones.The VAP rate was 13.3% or 10.1 per 1000 ventilator days.According to the multivariate analysis,a birthweight less than 750 g [adjusted odds ratio (aOR)=10.75,95% confidence interval (CI)=2.35-49.16;P=0.002] and sedative medication use (aOR=4.00,95% CI=1.23-12.50;P=0.021)were independent risk factors for VAP.Compared with the non-VAP group,the median difference in the VAP group yielded a significantly longer duration of NICU stay (18 days,P=0.001),total length of hospital stay (16 days,P=0.002) and higher hospital costs ($5113,P=0.001).The inhospital mortality rate in the VAP and non-VAP groups was 17.6% and 15.3% (P=0.73),respectively.Conclusions:A neonatal birthweight less than 750 g and sedative medication use were independent risk factors for VAP.Our VAP patients experienced a longer duration of both NICU and hospital stay,and incurred higher hospitalization costs.
文摘BACKGROUND The pathophysiological characteristics of severe pneumonia complicated by respiratory failure comprise pulmonary parenchymal changes leading to ventilation imbalance,alveolar capillary injury,pulmonary edema,refractory hypoxemia,and reduced lung compliance.Prolonged hypoxia can cause acid-base balance disorder,peripheral circulatory failure,blood-pressure reduction,arrhythmia,and other adverse consequences.AIM To investigate sequential mechanical ventilation’s effect on severe pneumonia complicated by respiratory failure.METHODS We selected 108 patients with severe pneumonia complicated by respiratory failure who underwent mechanical ventilation between January 2018 and September 2020 at the Luhe Hospital’s Intensive Care Unit and divided them into sequential and regular groups according to a randomized trial,with each group comprising 54 patients.The sequential group received invasive and non-invasive sequential mechanical ventilation,whereas the regular group received invasive mechanical ventilation.Blood-gas parameters,hemodynamic parameters,respiratory mechanical parameters,inflammatory factors,and treatment outcomes were compared between the two groups before and after mechanical-ventilation treatment.RESULTS The arterial oxygen partial pressure and stroke volume variation values of the sequential group at 24,48,and 72 h of treatment were higher than those of the conventional group(P<0.05).The carbon dioxide partial pressure value of the sequential group at 72 h of treatment and the Raw value of the treatment group at 24 and 48 h were lower than those of the conventional group(P<0.05).The pH value of the sequential group at 24 and 72 h of treatment,the central venous pressure value of the treatment at 24 h,and the Cst value of the treatment at 24 and 48 h were higher than those of the conventional group(P<0.05).The tidal volume in the sequential group at 24 h of treatment was higher than that in the conventional group(P<0.05),the measured values of interleukin-6 and tumor necrosis factor-αin the sequential group at 72 h of treatment were lower than those in the conventional group(P<0.05),and the total time of mechanical ventilation in the sequential group was shorter than that in the conventional group,with a statistically significant difference(P<0.05).CONCLUSION Treating severe pneumonia complicated by respiratory failure with sequential mechanical ventilation is more effective in improving respiratory system compliance,reducing inflammatory response,maintaining hemodynamic stability,and improving patient blood-gas levels;however,from this study’s perspective,it cannot reduce patient mortality.
文摘Objective: Ventilator associated pneumonia (VAP) has been shown to be associated with significant morbidity and mortality( Chastre and Fagon, 2002; klompas, 2007) among mechanically venti- lated patients in the intensive care unit (ICU), with the incidence ranging from 9% to 27% ; crude mortality ranges from 25% to 50%.1-3 A meta-analysis of published studies was undertaken to combine information regarding the effect of subglottic secretion drainage (SSD) on the incidence of ventilated associated pneumonia in adult ICU patients. Methods: Reports of studies on SSD were identified by searching the PUBMED, EMBASE, and COCHRANCE LIBRARY databases (December 30, 2010). Randomized trials of SSD compared to usual care in adult mechanically ventilated ICU patients were included in this meta-analysis. Results: Ten RCTs with 2,314 patients were identified. SSD significantly reduced the incidence of VAP [ relative risk (RR) =0.52, 95% confidence interval (C/): 0.42-0.64, P〈0.000 01]. When SSD was compared with the control groups, the overall RR for ICU mortality was 1.00 (95% CI, 0.84-1.19) and for hospital mortality was 0.95 (95% CI, 0. 80-1.13). Overall, the subglottic drainage effect on the days of mechanical ventilation was -1.52 days (95% CI, -2.94 to -0.11) and on the ICU length of stay (LOS) was -0.81days (95% CI, -2.33 to -0.7). Conclusions: In this meta-analysis, when an endotracheal tube (ETT) with SSD was compared with an ETT without SSD, there was a highly significant reduction in the VAP rate of approxi- mately 50%. Time on mechanical ventilation (MV) and the ICU LOS may be reduced, but no reduction in ICU or hospital mortality has been observed in published trials,
文摘The aim of this prospective study was to evaluate the incidence, etiologic agents and mortality rate of ventilator-associated pneumonia (VAP). In a six-month period, cases who were 18 years or older, dependent on mechanical ventilator for more than 3 days and without pulmonary infection on first admission were included in this study. In all cases, body temperature recordings, blood and urine culture, microbiological analyses of endotracheal aspirates, and chest X-rays were obtained and used to identify VAP. Apache II scores on admission, duration of mechanical ventilation, length of intensive care unit (ICU) stay and mortality were recorded. This study included 45 cases and 22 developed VAP (48%). The incidence of VAP was 25.34 per 1000 ventilator days. Univariate analyses showed that duration of mechanical ventilation, length of ICU stay, coma and tracheotomy were associated with the development of VAP. The mortality rate of cases with VAP (72.7%) was significantly higher than cases without VAP (39.1%). The most frequent microorganisms were Acinetobacter spp., Pseudomonas aeruginosa and Klebsiella pneumoniae. In our study, VAP was a very common and important complication of mechanical ventilation and mortality was very high. To reduce mortality, minimize morbidity, shorten the length of stay, and reduce costs, defined risk factors for VAP should be recognized and an effective infection control program for the prevention of VAP should be implemented. Surveillance results should be evaluated regularly and necessary precautions should be taken.
文摘Mechanical ventilation(MV)is a life-support therapy that may predispose to morbid and lethal complications,with ventilator-associated pneumonia(VAP)being the most prevalent.In 2013,the Center for Disease Control(CDC)defined criteria for ventilator-associated events(VAE).Ten years later,a growing number of studies assessing or validating its clinical applicability and the potential benefits of its inclusion have been published.Surveillance with VAE criteria is retrospective and the focus is often on a subset of patients with higher thanlower severity.To date,it is estimated that around 30%of ventilated patients in the intensive care unit(ICU)develop VAE.While surveillance enhances the detection of infectious and non-infectious MV-related complicationsthat are severe enough to impact the patient’s outcomes,there are still many gaps in its classification and management.In this review,we provide an update by discussing VAE etiologies,epidemiology,and classification.Preventive strategies on optimizing ventilation,sedative and neuromuscular blockade therapy,and restrictivefluid management are warranted.An ideal VAE bundle is likely to minimize the period of intubation.We believethat it is time to progress from just surveillance to clinical care.Therefore,with this review,we have aimed toprovide a roadmap for future research on the subject.