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Objective: To analyze the assessment value of pulmonary vascular permeability index (PVPI) and procalcitonin (PCT) levels to the severity and prognosis of acute respiratory distress syndrome (ARDS) associated with septic shock. Methods: Clinic data of 100 ARDS patients admitted to Affiliated Hospital of Nantong University was analyzed retrospectively. The clinical data was collected as follows: gender, age, infection site, acute physiology, chronic health evaluation Ⅱ (APACHE Ⅱ), sequential organ failure (SOFA) score, serum PCT level, and hemodynamic parameters which were monitored by pulse indicator continuous cardiac output (PiCCO). Patients with septic shock associated with ARDS patients were divided into mild, moderate and severe groups. The patients were divided into survival group and death group according to the 28-day prognosis, and the differences in the parameters between two groups were analyzed, to evaluate PVPI and PCT in predicting the severity and prognosis of septic shock associated ARDS. Results: There were significant differences in PVPI and PCT between ARDS group associated with septic shock and not (P=0.000). PVPI and PCT increased with the severity of ARDS, and there was a statistically significant difference between the ARDS groups in different degrees of PVPI (P=0.000). Pearson correlation analysis showed that PVPI was positively correlated with APACHE Ⅱ score and SOFA score (r=0.554, P=0.000; r=0.431, P=0.000), and PCT was positively correlated with APACHE Ⅱ score and SOFA score (r=0.313, P=0.004; r=0.320, P=0.004). Receiver operating characteristic (ROC) curve analysis showed that the area under the ROC curve of the prognosis of ARDS patients with sepsis was significantly higher than those of the two groups. Conclusion: PVPI can assess the severity of ARDS in patients with septic shock, and PVPI and PCT are predictive factors of prognosis. The combination of PVPI and PCT contributes to early stage diagnosis of ARDS associated with septic shock.
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Objective: To explore the clinical value of extravascular lung water monitoring for rapid recovery in pediatric patients after complete repair of tetralogy of Fallot (TOF). Methods: A total of 43 pediatric patients received complete repair of TOF were studied. The pulse contour cardiac index (PCCI), global end diastolic volume index (GEDI), stroke volume variation (SVV), systemic vascular resistance index (SVRI), global ejection fraction (GEF), maximum of pressure increase in aorta (dPmax), extravascular lung water index (EVWI) and pulmonary vascular permeability index (PVPI) were recorded by pulse-indicated continuous cardiac output (PICCO) monitoring at immediately enter pediatric ICU (PICU) and 6h, 12h, 18h, 24h post-operation. Meanwhile, the heart rate, blood pressure, central venous pressure (CVP), left atrium pressure (LAP) and balance of liquid were monitored; mechanical ventilation time, PICU stay time, re-intubation,re-occlusion of major aortopulmonary collateral arteries (MAPCAs) and other complications were recorded. Based on post-operative mechanical ventilation time, the patients were divided into 2 groups: Rapid recovery (R) group, patients with mechanical ventilation≤24h, n=29 and Delayed recovery (D) group, patients with mechanical ventilation>24h, n=14. Results: Compared with group D, group R had the shorter mechanical ventilation time (14.2±8.0) h vs (86.3±44.5) h and PICU stay time (2.5±1.7) days vs (5.3±3.6) days, both P<0.05; decreased PVPI at immediately enter PICU and 6h, 12h, 18h, 24h post-operation as (4.9±1.3 vs 6.4±1.5),(5.1±1.8 vs 6.5±1.3),(4.8±2.0 vs 6.5±1.6),(4.4±1.1vs 6.9±1.8), (4.4±2.5 vs 6.5±2.2) respectively, all P<0.05; Lower ELWI at 12h and 18h post-operation as(20.9±6.1) ml/kg vs (26.8±5.7) ml/kg and(19.1±5.5) ml/kg vs (26.7±5.5)ml/kg, both P<0.05. Group R had no patient received re-occlusion of MAPCAs after operation, while Group D had 3. No death, no catheter-related complication occurred in either group. Conclusion: MAPCAs may increase extravascular lung water, pulmonary vascular permeability and cause lung perfusion, therefore affect the early recovery of complete repair of pediatric TOF. PICCO monitoring may conduct bedside quantitative observation of lung perfusion, combining with ELWI and PVPI, clinicians may identify and manage MAPCAs as necessity for rapid recovery in relevant patients.
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Objective · To analyze the assessment value of pulmonary vascular permeability index (PVPI) and procalcitonin (PCT) levels to the severity and prognosis of acute respiratory distress syndrome (ARDS) associated with septic shock.Methods·Clinic data of 100 ARDS patients admitted to Affiliated Hospital of Nantong University was analyzed retrospectively.The clinical data was collected as follows:gender,age,infection site,acute physiology,chronic health evaluation Ⅱ (APACHE Ⅱ),sequential organ failure (SOFA) score,serum PCT level,and hemodynamic parameters which were monitored by pulse indicator continuous cardiac output (PiCCO).Patients with septic shock associated with ARDS patients were divided into mild,moderate and severe groups.The patients were divided into survival group and death group according to the 28-day prognosis,and the differences in the parameters between two groups were analyzed,to evaluate PVPI and PCT in predicting the severity and prognosis of septic shock associated ARDS.Results · There were significant differences in PVPI and PCT between ARDS group associated with septic shock and not (P=0.000).PVPI and PCT increased with the severity of ARDS,and there was a statistically significant difference between the ARDS groups in different degrees of PVPI (P=0.000).Pearson correlation analysis showed that PVPI was positively correlated with APACHE Ⅱ score and SOFA score (r=0.554,P=0.000;r=0.431,P=0.000),and PCT was positively correlated with APACHE Ⅱ score and SOFA score (r=0.313,P=0.004;r=0.320,P=0.004).Receiver operating characteristic (ROC) curve analysis showed that the area under the ROC curve of the prognosis of ARDS patients with sepsis was significantly higher than those of the two groups.Conclusion · PVPI can assess the severity of ARDS in patients with septic shock,and PVPI and PCT are predictive factors of prognosis.The combination of PVPI and PCT contributes to early stage diagnosis of ARDS associated with septic shock.
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Objective To investigate the value of extravascular lung water index (EVLWI) and pulmonary vascular permeability index (PVPI) in the diagnosis and treatment of acute respiratory distress syndrome(ARDS).Methods From February 2015 to October 2016,selected 80 patients with ARDS in Danzhou Municipal People's Hospital,including 19 cases mild patients,28 cases moderate cases and 33 cases severe cases.The patients' EVLWI,PVPI,acute physiology and chronic health score system Ⅱ (APACHE Ⅱ)score,lung injury score (LIS) were detected.Results The score of APACHE Ⅱ in severe group was 22.81(21.91,25.40) points,significantly higher than that in mild group (19.81 (18.12,21.10) points) and moderate group(20.07 (19.01,22.02),P =0.002).The LIS,EVLWI and PVPI in Severe group were 2.01(1.83,2.11) points,17.01 (14.82,23.02) ml/kg and 3.82 (3.01,5.01),significantly higher than that in mild group (1.01 (0.98) points,1.7412.71 (10.89,13.67) ml/kg,2.71 (2.36,2.94)) and moderate group (1.52 (1.36,1.91) points,14.21 (13.10,16.60) ml/kg,3.01 (2.52,3.03),P ＜ 0.05),LIS,EVLWI and PVPI in moderate group were significantly higher than the mild group (P＜0.05).The mortality rate of 28 d in moderate and severe group was 32.14％ (9/28) and 51.52％ (17/33),which was significantly higher than that in mild group 0.00％(0/19) (P＜0.05).EVLWI and PVPI were 19.12(17.22,22.96) ml/kg and 3.71(3.08,5.22) in patients with death,which were significantly higher than those in survival 14.19 (11.20,16.59) ml/kg and 2.97(2.31,3.10) (P=0,021 and 0.016);EVLWI was positively correlated with PVPI,LIS and APACHE Ⅱ score(rs =0.411,0.323 and 0.304,P＜ 0.001).PVPI was positively correlated with LIS and APACHE Ⅱ score (rs =0.346,0.297,P＜0.001).No correlation between LIS and APACHE Ⅱ score (P＞0.05).Conclusion EVLWI and PVPI have certain apphcation value in the diagnosis and treatment of ARDS,and it is related to the patient's condition and prognosis.
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Objective To examine the effect of rapid infusion test guided by extravascular lung water index (EVLWI) on hemodynamics in critically ill patients at different states in order to guide volume resuscitation.Methods A prospective observation was conducted.Forty critically ill patients admitted to Department of Critical Care Medicine of Tianjin Third Central Hospital from June 2012 to April 2014 were enrolled.Based on the levels of EVLWI and pulmonary vascular permeability index (PVPI) and the cardiac function,the patients were divided into four groups:septic patients with normal EVLWI and PVPI (n =17),septic patients with increased EVLWI and PVPI (n =3),septic patients with increased EVLWI and normal PVPI (n =4),and coronary heart disease and heart failure patients with normal EVLWI and PVPI (n =16).The rapid infusion test was conducted in all patients using lactated Ringer solution 250 mL,followed by infusion of crystalloid with rate of 150 mL/h.The conditions of mechanical ventilation and vasoactive drugs were not changed during study.The changes in EVLWI,intrathoracic blood volume index (ITBVI),and cardiac index (CI) before capacity load,at immediate capacity load,and 15,45,105 minutes after load were determined by pulse indicator continuous cardiac output (PiCCO).On the base of volume status before and after the liquid infusion,the standard for the changes were:stroke volume (SV) increased by 12％-15％,central venous pressure (CVP) greater ≥ 2 mmHg (1 mmHg =0.133 kPa),CI ＞ 15％,and ITBVI change greater than 10％.Results There were no statistically significant differences in the observed indicators at the each time point before and after rapid infusion test among the four groups (all P ＞ 0.05).In septic patients with normal EVLWI and PVPI group,ITBVI was slightly increased by 5.4％-9.7％ from 15 minutes to 45 minutes after rapid infusion test.In coronary heart disease and heart failure patients with normal EVLWI and PVPI group,the EVLWI was increased by 11.9％,5.9％,and 14.7％ respectirely at 15,45,and 105 minutes,ITBVI was slightly increased by 6.4％ at 45 minutes,CI was increased by 29.5％ immediately after rapid infusion.In septic patients with increased EVLWI and PVPI group,CVP was increased by 8 mmHg immediately,EVLWI was increased significantly by 15.8％ at 45 minutes,ITBVI was slightly decreased by 10.0％ at 45 minutes,CI was increased by 24.7％ immediately,and increased by 17.0％ at 105 minutes,and PVPI was increased by 15.6％-28.1％ at 15-105 minutes after rapid infusion.In septic patients with increased EVLWI and normal PVPI group,CVP was increased by 1.5 mmHg at 15 minutes,EVLWI was increased immediately,which was increased by 17.4％,24.0％,and 31.4％ respectively at 15,45,and 105 minutes,ITBVI was increased by 13.9％ at 15 minutes,CI was increased by 16.1％ at 15 minutes after rapid fluid infusion.Conclusions Rapid fluid replacement in critically ill patients with crystalloid,regardless of whether the EVLWI was normal or increased,the short-term response was affected by the volume and cardiac function of patients.Different status of patients showed different volume effect curve:no significant changes in hemodynamic parameters were found in patients with normal EVLWI and volume parameters.In patients with potential cardiac dysfunction,CI and EVLWI increased significantly; regardless of PVPI increased or normal,EVLWI and CI were increased in patients with elevated EVLWI; two different changes could be found in the two types of pulmonary edema while ITBVI was increased.
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Objective To discuss the jointly therapeutic effects of 6％ hydroxyethyl starch 130/0.4 (voluven) and furosemide on acute lung injury induced by paraquat (PQ) in swine.Methods The ALI/ ARDS models were established with 20％ PQ (20 mL) intraperitoneal injection in 18 healthy female piglets and randomly divided into three groups: voluven group (A), furosemide group (B) and voluven + furosemide group (C) (n =6 in each group).The heart rate (HR), mean arterial pressure (MAP), extravascular lung water index (ELWI), pulmonary vascular permeability index (PVPI), partial pressure of carbon dioxide (PaCO2) and oxygenation index (PaO2/FiO2) among the three groups were carefully measured by PICCO (pulse indicator continuous cardiac output) before modeling (baseline), just aftermodeling (t0), and 2 h (t2), 4 h (t4), 6 h (t6) and 8 h (t8) after trearment.Needle biopsies of lung tissue were made before modeling and at t0 and t8 and prepared for microscopy observation after Hematoxylineosin staining method (HE staning).Repeated measurement data were compared among repeated measures by the ANOVA and the difference between groups was compared by one-wey ANOVA.Results (1) The HR and MAP of all animals increased obviously while the oxygenation index declined significantly at modeling just made (t0) compared to those before modeling (all P ＜ 0.05).At the same time, the HR and MAP of A and B groups were significantly lower than those of C group after treatment (all P ＜ 0.05), while the oxygenation index of A and B were significantly higher (all P ＞ 0.05).(2) The ELWI and PVPI of all animals increased obviously at modeling just made (t0) compared to those before modeling (all P ＜ 0.05).The ELWI and PVPI were decreased after treatment.And at the same time, the ELWI and PVPI of A and B groups were significantly lower than those of C group after treatment (all P ＜ 0.05).(3) The alveolar tissue showed obviously injured changes at modeling just made (t0).The injury was relieved 8h after trearment, which was most markedly in group C.Conclusions With the combination of 6％ hydroxyethyl starch 130/0.4 and furosemide administered, the acute lung injury induced by paraquat poisoning can be effectively relieved, promoting gas exchange, and improve oxygenation.
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Objective To observe the effects of continuous blood purification(CBP) on extravascular lung water and permeability index in patients with severe extrapulmonary acute respiratory distress syndrome (ARDSexp).Methods Fifteen patients with severe ARDSexp were treated with CBP.The level of extravascular lung water index (EVLWI) and pulmonary vascular permeability index (PVPI) was measured before and after treatment,and at the same time the changes of inflammatory indicators were recorded.Results Compared with that before treatment,EVLWI and PVPI was decreased obviously after treatment (P ＜ 0.01),the level of C-reactive protein and interleukin 6 (IL-6),calcitonin and systemic inflammatory response syndrome score and the acute physiology and chronic health Ⅱ score was significantly decreased (P ＜ 0.01).Conclusion CBP can improve the level of EVLWI,PVPI and inflammatory indicators and also the prognosis of severe ARDSexp.
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Objective In order to extrapolate the respiratory dysfunction of patients in early stage of acute organophosphorus pesticide poisoning (AOPP),transpulmonary thermodilution technique was used in swine models of severe acute dichlorvos poisoning (SADP) to evaluate respiratory function.Methods Twenty healthy female swine were randomly divided into dichlorvos ( n =7 ),atropine ( n =7 ) and control (n =6) groups.In the dichlorvos group,the swine were administered with 80％ emulsified dichlorvos (100mg/kg) via the gastric tube toinduce SADP.In the atropine group,swinewere administered with dichlorvos,and 0.5h later,atropine was injected to obtain and maintain atropinization.The swine of control group were administered with saline solution instead.Arterial and venous blood samples were collected 0,0.5,1,2,4 and 6 hours after modeling for blood gas analysis and detecting acetylcholinesterase levels.Both extravascular lung water index (EVLWI) and pulmonary vascular permeability index ( PVPI ) were measured by using PiCCO (pulse indicator continuous cardiac output ). At the termination of the experiment,the animals were sacrificed and the lung wet/dry weight ratio was determined and histopathological changes of lung tissue were also observed under microscope.Results In the dichlorvos group,EVLWI and PVPI were substantially increased from 0.5 h to 6 h after modeling but PaO2/FiO2 decreased from 0-6 h after modeling.In the atropine group,EVLWI and PVPI increased initially,but then they decreased 1 h afterwards and PaO2/FiO2 was also gradually decreased from 0-1 h.In both dichlorvos group and atropine group,the EVLWI was negatively correlated with PO2/FiO2 and positively correlated with PVPI.Compared with the control group,the lung wet/dry weight ratio increased markedly in the dichlorvos group and mildly increased in the atropine group.Meanwhile,the histopathological changes of lung tissue were obvious in the dichlorvos group and mild in the atropine group.Conclusions SADP swine experienced substantial changes in respiratory function. EVLWI was a reliable and valuable indicator for evaluating respiratory function in the early stage of AOPP.
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Objective To explore the effective mechanism of tumor necrosis factor-?(TNF-?) and interlukin-8(IL-8) in experimental lung damage by observing changes of TNF-? and IL-8 concentration in lung tissue during abdominal infection. Methods The cecal ligation and perforation were utilized to make the abdominal infection in rats.The rats were sacrificed respectively at 0,24,48,72,96 and 120 hours after operation. The pulmonary vascular permeability and the amount of different cells in bronchoalveolar lavage fluid(BALF) were examined. The concentrations of TNF-? and IL-8 in BALF, lung tissue and plasma were assayed. Results The pulmonary vascular permeability and the neutrophil percentage of BALF increased progressively. The concentrations of TNF-? and IL-8 significantly increased in plasma, lung tissue and BALF. Significant correlation was respectively present between the TNF-? levels and the IL-8 levels in lung and BALF. The levels of TNF-? and IL-8 in lung and BALF were not correlated respectively with those in plasma. Conclusions TNF-? and IL-8 may be implicated in the inflammatory reaction of lung during early stage of abdominal infection. Lung injury derived from intestinal infection could be early discovered through assaying TNF-? and IL-8 concentration in BALF.
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In the control rabbits 6 h after smoke inhalation injury, the pulmonary vascular permeability and the circulating platelet aggregation percentage increased distinctly, pathological changes of trachea and lung were marked. In the other 2 groups, ginsenosides (25 mg/kg, iv) or ketoprofen (12 mg/kg, iv) were given 15 min after injury, 6 h after treatment, although both drugs decreased, the aggregation percentage of circulating platelets, only ginsenosides did alleviate the augmented pulmonary vascular permeabil ity and the pathological changes of trachea and lung. In the similar model of smoke inhalation injury in rats, ginsensi-des increased the PGI2 level in arterial blood and reduced the ratio of TXA2/ PGI2 1 h after treatment.
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Acute fulminant pancreatitis was produced in dogs by injection of autobile into the main pancreatic duct.After injection, the phospholipase A2 (PLA2) activities in serum, lung lymph and bronchoalveolar lavage fluid (BAL) were elevated significantly, lung lymph flow and pulmonary transvascular protein clear ance increased progressively, protein content and cell numbers in BAL were significantly higher than those in control animals.Furthermore, lung index, wet to dry lung weight ratio, extravascular lung water to bloodless dry lung weight ratio increased significantly as compared to control animals.Pretreatment with PLA2 inhibitor, chloroquine,blocked the changes mentioned above.This experiment suggests, (1) PLA2 activity in lung lymph fluid as well as in serum and BAL is elevated in acute hemorrhagic pancreatitis.(2) Elevated PLA2 activity may increase the pulmonary vascular permeability.(3) PLA2 is the major factor leading to pulmonary edema in acute hemorrhagic pancreatits.(4) Phagocytes contribute to the lung injury induced by PLA2 to some extent.