【Abstract】ObjectiveTo evaluate the main CT features, the morbidity of CT signs and the anatomic-pathologic bases of secondary pyogenic peritonitis (SPP). MethodsTwentyfour patients of the SPP were retrospectively studied. Emphasis was placed on the spiral CT manifestations of the SPP correlating with their anatomic-pathologic bases and the occurrence as well as the signs of primary lesions which resulted in the SPP. ResultsThe main CT manifestations of SPP revealed as follows: the thickened peritoneum, 16 in 24 cases (66.7%), of which 14 cases were smooth and 2 cases were irregular; the ascites, 15 in 24 cases (62.5%); the free air within peritoneal cavity, 9 in 24 cases (37.5%); the edema and thickening involved in the greater omentum, 8 in 24 cases (33.3%); the small bowel mesentery, 5 in 24 cases (20.8%); and the bowels’ wall, 5 in 24 cases (20.8%); the adhesions of bowels, 6 in 24 cases (25.0%). The CT manifestation of the promary lesions, which caused SPP, and the complications were shown as follows: the signs of primary lesion, 13 cases (54.2%); the inflammatory changes in retroperitoneal cavity 13 cases (54.2%); the involvements of chest 13 cases (54.2%); and the abscess in peritoneal and pelvic cavity 6 cases (25.0%). ConclusionThe main significant CT signs of SPP could be concluded as follows: thickened peritoneum, ascites, free air within peritoneal cavity, edematous and thickened greater omentum, the small bowel mesentery, and the bowels’ wall, as well as the adhesions of bowels. So, the CT scan can present plenty of CT signs, which are significant and very helpful for making an appropriate diagnosis of SPP.
目的 探讨结核性腹膜炎（TBP）及癌性腹膜炎（CP）的螺旋CT表现，提高其诊断及鉴别诊断水平。 方法 回顾分析2009年9月－2010年9月经手术病理、穿刺活检或综合手段证实的22例TBP和45例CP患者的CT影像资料，采用χ2检验比较各种CT征象在两种病变中的发生率，结合病理、临床结果进行分析。 结果 TBP组及CP组患者大量腹水所占比例差异有统计学意义（36.4%、75.6%，χ2=9.703，P=0.002）；两组壁腹膜、肠系膜增厚构成比差异有统计学意义，TBP组以壁层腹膜均匀增厚、肠系膜污迹样改变为主，CP组壁层腹膜以结节、块样增厚为主；两组大网膜厚度差异有统计学意义。 结论 以壁层腹膜改变为基础，综合大网膜、肠系膜及腹水改变CT征象对两种病变的诊断及鉴别诊断具有重要意义。
Objective To investigate predictive value of procalcitonin (PCT) and C-reactive protein (CRP) levels for spontaneous bacterial peritonitis (SBP) in patients with liver cirrhosis ascites. Methods The clinical data of 140 patients with liver cirrhosis ascites treated in our hospital from January 2012 to January 2016 were retrospectively analyzed. According to the presence of SBP, these patients were divided into SBP group and non-SBP group. The clinical data were compared between these two groups. The receiver operating characteristic (ROC) curve was constructed to assess their sensitivities and specificities of PCT and CRP for diagnosis of SBP. Results The PCT and CRP levels of the SBP group were significantly higher than those of the non-SBP group (P<0.05). The differences of serum ALT, AST and white cell count between the SBP group and the non-SBP were not statistically significant (P>0.05). The ROC curve analysis showed that the area under the ROC curve of PCT and CRP were 0.895 and 0.926, their corresponding cut-off value 2.1 μg/L and 24.8 mg/L, the sensitivities were 86.9% and 89.5%, the specificities were 85.1% and 83.5%, respectively. Conclusion Abnormally elevated PCT and CRP levels might have an important detective value for SBP in patients with liver cirrhosis ascites.
ObjectiveTo investigate whether continuous quality improvement (CQI) measures can reduce the episodes of peritonitis. MethodsWe analyzed the data of 114 cases of peritoneal dialysis related peritonitis from January to December 2011 before applying CQI measures and 72 cases from January and December 2012 after applying CQI measures in West China Hospital. Then we studied the episodes, cause and pathogenic bacteria species of peritonitis in peritoneal dialysis patients. We implemented the process of reducing the episodes of peritonitis by applying PDCA four-step design: plan-do-check-act. ResultsThe episodes of peritonitis were reduced from per 60.8 patient-months (0.197/patient-years) to per 66.6 patient-months (0.180/patient-years) after applying CQI measures. The positive rate of pathogenic bacteria culture was both 50.0% before and after applying CQI measures, in which 66.7% were gram-positive cocci. The curing rate of peritonitis was increased from 57 case/times (76.3%) to 87 case/times (79.2%). Switching to hemodialysis rate was reduced from 17 cases/times (14.9%) to 10 cases/times (13.9%). Death cases was reduced from 9 cases/times (7.9%) to 5 cases/times (6.9%). ConclusionThese results show that the incidence of peritoneal dialysis related peritonitis decreases and the curing rate increases through CQI measures.
Objective To investigate the change of pathogenic distribution and drug resistance in peritoneal dialysis associated peritonitis (PDAP). Methods The clinical data of all the patients undergoing continuous ambulatory peritoneal dialysis and suffered from PDAP between January and December in 2014 was retrospectively collected, and the pathogens, drug resistance, outcomes and underlying causes were analyzed. Results A total of 64 patients had 72 cases of PDAP. Only 36 strains (50.0%) had positive culture results, among which 24 strains (66.7%) were Gram-positive bacteria strains, 7 strains (19.4%) were Gram-negative bacteria strains, and 5 strains (13.9%) were fungi. For Gram-positive bacteria strains, the resistance rates to vancomycin, linezolid and rifampicin were all 0%; the resistance rate to levofloxacin, gentamycin and cefazolin was 14.3%, 26.3% and 50.0%, respectively. For Gram-negative bacteria strains, the resistance rates to amikacin and imipenem were both 0%; the resistant rate to gentamycin, ceftazidime, levofloxacin and ampicillin was 28.6%, 28.6%, 42.9% and 100.0%, respectively. Conclusions The pathogenic spectrum and drug resistance in PDAP have been markedly changed. Selection of antibiotics should be chosen according to the characteristic of the pathogenic spectrum and drug resistance of each center. Great effort is still needed to improve the culture positive rate of the effluent dialysate and to improve the recovery rate of peritonitis.
Objective To investigate the pathogenesis of acute lung injury in rats induced by intra-peritoneally injection of perforative peritonitis ascitic fluids（PPAF） and the role of L-arginine （L-Arg） in acute lung injury in this model. Methods Perforative peritonitis （PP） models were established in 60 rats and PPAF were collected. Forty-eight rats were randomly divided equally into NS group，PPAF group, and L-Arg group. Rats were randomly subjected to death at 7 h and 12 h. Peripheral blood WBC were counted，levels of NO and malondialdehyde （MDA） in serum were examined. Lung injury score and wet/dry ratio were evaluated， and level of myeloperoxidase （MPO） in lung tissues and lung cell apoptosis were tested. Results WBC count of peripheral blood, levels of NO and MDA in serum， level of MPO in lung tissue, lung injury score， wet/dry ratio， and lung cell apoptosis rate in PPAF group were significantly higher than that in NS group at each time point（P＜0.01）. Level of NO in serum in L-Arg group was higher than that in PPAF group （P＜0.01）， but lower level of MDA in serum， lower level of MPO in lung tissue and lung injury score，lower wet/dry ratio， and lung cell apoptosis rate were observed in L-Arg group（P＜0.05）. In PPAF group and L-Arg group， level of NO in serum， wet/dry ratio, and lung cell apoptosis rate were higher at 12 h than that at 7 h（P=0.000）. Serum NO level was in negative correlation with serum MDA level （r=-0.257，P=0.021）， MPO level in lung tissue（r=-0.444， P=0.011），and lung cell apoptosis（r=-0.351， P =0.010） in PPAF group and L-Arg group， but serum MDA level was in positive correlation with cell apoptosis（r=0.969， P＜0.001） in each group. Conclusions Acute lung injury rats model can be established by intra-peritoneally injection of PPAF. Enhanced oxidizing reaction and cell apoptosis take part in the occurrence of acute lung injury. L-Arg plays a protective role in acute lung injury.
Objective To study the effect and intrinsic mechanism of acute suppurative peritonitis associated ascitic fluid (ASPAAF) on experimental liver injury of rats. Methods Thirty-two male or female Sprague-Dawley (SD) rats were randomly divided into two groups: ASPAAF group (n=16) and control group (n=16), in which 8 ml ASPAAF or normal saline (NS) were injected into the peritoneal cavity, respectively. The rats were killed at each time intervals after peritoneal cavity injection (6 h and 12 h) respectively in two groups and specimens were made to detect the levels of serum TNF-α, endotoxin and liver function (AST, ALT and STB). The level of TNF-α in liver tissues was measured. The pathological change of liver was observed by microscope. Results The levels of TNF-α, endotoxin, ALT, AST and STB in serum and the levels of TNF-α in liver tissues at different time points were markedly higher in ASPAAF group compared with those in control group (P＜0.05), and these indexes increased with increasing time in ASPAAF group (P＜0.05). In ASPAAF group, hepatic tissue appeared hydrops, even spotty necrosis and the changes at 6 h and 12 h were not obvious different. No abnormal pathological change of hepatic tissue was found in control group. Conclusion ASPAAF can induce the injury of the liver in rats, which may involved in TNF-α and endotoxin.