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Objective To systematically evaluate the clinical effect of prone position mechanical ventilation on the improvement of oxygenation in patients with severe pneumonia. Methods Pubmed, Embase, Cochrane Library, CNKI, Wanfang Data and VIP database were searched from the time of database built up until December 10th, 2017. All the published randomized controlled trials (RCTs) about the effects of prone position ventilation on the oxygenation of severe pneumonia patients were screened, and were confirmed by the literature reference citation retrieval. Inclusion and exclusion criteria had been used to review and rank the literature. After evaluating the quality of included studies, the data was extracted from RCTs and given a Meta-analysis using RevMen 5.1. Results Twelve RCTs with 650 cases were included. Eleven of them were Chinese literature while 1 was in English. Ten studies showed that the prone position ventilation had a significant influence on improving partial pressure of oxygen [weighted mean difference (WMD) =9.93, 95% confidence interval (95%CI) = 2.92-16.95, P = 0.006], publication bias was found in these studies. Seven studies showed that the prone position ventilation had a significant influence on partial pressure of carbon dioxide (WMD =9.99, 95%CI = 1.81-18.18, P = 0.02), publication bias was found in these studies. Seven studies showed that the prone position ventilation had a significant influence on oxygenation index (WMD = 31.22, 95%CI = 26.06-36.39, P < 0.000 01), publication bias was found in these studies. Two studies showed that the prone position ventilation had a significant influence on oxygen saturation of blood (WMD = 2.12, 95%CI = 1.24-3.00, P < 0.000 01), no publication bias was found in these studies. Conclusion Prone position ventilation can effectively improve the patients' oxygenation index, partial pressure of oxygen, and oxygen saturation of blood, and reduce the partial pressure of carbon dioxide.
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Objective To investigate the clinical values of Dynamic changes of evaluation of central venous pressure (△CVP) combining with the pulse Doppler records of early mitral dilatation of blood flow velocity and peak atrial systolic blood flow velocity ratio (E/A) in the diagnosis and prognosis assessment of septic patients.Methods The study totally enrolled patients who were admitted to Intensive Care Unit of the Central Hospital of Puyang during January 2013 to June 2016.By the standard of 28 days,all the cases were divided into the survival group and the dead group.All patients admitted in the intensive treatment unit (ICU) in the same period were recorded of the acute physiology and chronic health evaluation system Ⅱ (APACHE Ⅱ) score and sequential organ failure score (SOFA).Observe the dynamic changes of the two groups of patients on central venous pressure (△CVP) and E/A changes record into the family,after 6 hours and 24 of the related E/A value on each node,at the same time record the related CVP values,calculated the absolute value of the dynamic change of each node in the comparison after 6 h and 24 hours,the records of the node values mapped the receiver-operating characteristic curve (ROC) to evaluate the value of each index for prognosis.Results A total of 233 cases of sepsis patients enrolled,28 d survival of 122 cases,survival rate was 52.4％;111 cases died,mortality was 47.6％.The ICU blood lactate,APACHE Ⅱf,SOFA score of the dead group was significantly higher than the survival group,and their stay in ICU was significantly shorter than the survival group (P＜0.05),other clinical features of the difference was not statistically significant(P＞0.05).The E/A value differences between the dead group and survival group into the ICU 0h and 6h were 0.54±0.17,0.69±0.24;0.57±0.28,0.85±0.25 (P＜0.05),the ROC curve analysis is 0.792,0.818,and there are different CVP change value △h2 CVP change value △h1,24 hours and after 6 hours of the patient,namely:5.67 ± 4.16,7.82 ±4.81;6.58±3.89,8.82±2.40 (P＜0.05) the area under the ROC curve it was,0.778,0.705,wherein when the 6h,the cutoff value E/A 0.75 area taken under the ROC curve (AUC) was 0.818 for the highest single index,the sensitivity and specificity were forecast 74.16％,95.45％,which the ICU 6 when E/A area under the ROC curve of dynamic changes in the value of a ACVP with CVP (AUC) of up to 0.844;0.471 to take their cut-off point,the sensitivity of the prognosis was 88.32％,specificity degree of 90.71％,better predictive strength thanthe other indicators,as well as sensitivity and specificity.Conclusion Early E/A can be used as prognostic evaluation of sepsis as new and important indicator,combining with dynamic changes of the early CVP as an early assessment of the clinical condition of patients with sepsis,and can be prediction of the prognosis of patients,as well as reference for the therapeutic intervention on high-risk patients.
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Objective To explore the effect of adipose-derived stem cells (ADSCs) on inflammatory factors in rats with lipopolysaccharide (LPS)-induced acute lung injury (ALI) and the possible mechanism of anti-inflammatory. Methods Seventy male Sprague-Dawley (SD) rats were randomly divided into normal control group (n = 10), LPS model group (n = 30), and ADSCs intervention group (n = 30) by random number table. ALI model was reproduced by intraperitoneal injection of 8 mg/kg LPS, and the rats in ADSCs intervention group received tail vein injection of 300 μL ADSCs 30 minutes after the model reproduction, the samples of normal control group were harvested immediately without any intervention, and the specimens in remained two groups were taken at 6, 24, 72 hours respectively. Arterial partial pressure of oxygen (PaO2) and lactate level in femoral artery were determined. Enzyme-linked immunosorbent assay (ELISA) was used to detect the serum myeloperoxidase (MPO) and interleukin-10 (IL-10) in the blood of left ventricle. Lung wet/dry weight (W/D) ratio was detected by thoracotomy, and the pathological changes of lung tissue were observed under an optical microscope. Western Blot was used to detect the protein expression of nuclear factor-κB (NF-κB) in lung tissue of rats. Results Compared with the normal control group, the damage degree of lung tissue of LPS model group was significantly heavier from 6 hours, and lung W/D ratio, blood lactate, MPO, IL-10 and expression level of NF-κB in lung tissue were significantly increased respectively, while PaO2 was decreased significantly. Compared with LPS model group, the damage degree of lung tissue of ADSCs intervention group was significantly reduced from 6 hours, and lung W/D ratio, blood lactate, MPO, and NF-κB expression in lung tissue were significantly decreased, while PaO2 was increased significantly, and it became normal at 72 hours [lung W/D ratio: 5.33±0.29 vs. 5.77±0.42 at 6 hours, 5.14±0.46 vs. 5.43±0.38 at 72 hours; blood lactate (mmol/L): 3.6±1.0 vs. 5.7±1.1 at 6 hours, 3.1±1.0 vs. 3.8±1.2 at 72 hours; blood MPO (μg/L): 1.50±0.90 vs. 2.70±1.85 at 6 hours, 0.46±0.30 vs. 0.71±0.22 at 72 hours; NF-κB (gray value): 0.40±0.11 vs. 0.50±0.09 at 6 hours, 0.24±0.03 vs. 0.33±0.06; PaO2 (mmHg, 1 mmHg = 0.133 kPa): 78.0±4.1 vs. 74.5±3.2 at 6 hours, 89.3±9.4 vs. 81.9±3.4 at 72 hours; all P < 0.05]. The IL-10 level was significantly higher than that of LPS model group only at 24 hours (ng/L: 27.75±15.49 vs. 17.52±6.56, P < 0.05). Conclusion ADSCs can effectively relieve the inflammatory response of ALI induced by LPS, probably by inhibiting the expressions of NF-κB and blocking the release of inflammatory cytokines.
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Objective To investigate the role of recombinant human growth hormone (rhGH) in the treatment of patients with multiple organ dysfunction syndrome (MODS). Methods Thirty eight patients with MODS routinely treated with antibiotics and nutrition support were divided into two groups: the rhGH group and control group. The rhGH group was treated by subcutaneous injection of 5 U rhGH for two weeks. Results On the 7th day of treatment, the score of APACHE Ⅱ in the rhGH group was much higher than the control group, the levels of ALT, AST, BUN and Cre did not change much compared with the control group. The level of albumin in the rhGH group increased ( P
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Objective To study the influence of carboxymethyl-chitosan (CM-chitosan) on phenotype and proliferation of chondrocytes stimulated by recombinant human interleukin-1? (rhIL-1?), and explore its mechanism. Methods Chondrocytes were isolated and cultured. 10 ng/ml IL-1? with or without CM-chitosan of varied concentrations were added into the culture medium. After 24 h, changes of proliferative ability of chondrocytes were tested by MTT and flow cytometry. Proteoglycan synthesis was measured by incorporation of Na235SO4 into chondrocytes, nitric oxide (NO) production was detected by Greiss reaction, mRNA expression of typeⅠ、Ⅱcollagens, Aggrecan and inducible NO synthase (iNOS) were examined by semi-quantitative reverse transcription-polymerase chain reaction (RT-PCR). Results CM-chitosan could significantly antagonize IL-1?-induced inhibitory effect on proliferation of chondrocytes, restore proteoglycan synthesis of chondrocytes, decrease NO production of IL-1?-induced chondrocytes, increase the mRNA expression of typeⅡcollagen and Aggrecan, but decrease the expression of typeⅠcollagen and iNOS. The effects of CM-chitosan were in a dose-dependent manner. Conclusion CM-chitosan can maintain the proliferation and phenotype of IL-1?-induced chondrocytes.