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Abstract The current study was designed to evaluate the validity of (TREM-1) in diagnosis of Spontaneous Bacterial Peritonitis in cirrhotic patients and follow up after treatment for cirrhotic patients admitted to Tropical Medicine department at Ain Shams University hospitals during the six months period starting from August 2017 to February 2018. Sixty patients were enrolled in this study. All of them were subjected to Complete history taking, thorough clinical examination, laboratory investigations including (complete blood picture, C reactive protein, liver and renal profiles, abdominal ultrasonography, ascitic fluid sampling for ascitic cell count, biochemical assay (ascitic fluid albumin, LDH, glucose and total proteins levels), ascitic fluid culture and sensitivity and measurement of TREM-1. The studied patients were classified into two groups: 1. group 1 (control): includes 30 patients had ascites due to various liver diseases but did not have any evidence of infected ascites, bacterascites or spontaneous bacterial peritonitis. 2. group 2 (SBP): included 30 patients diagnosed with spontaneous bacterial peritonitis based on fever, abdominal tenderness, leukocytosis, elevated CRP, ascitic cell count > 250 cells and ascitic culture and sensitivity. Ascitic TREM-1 was measured before treatment, Then those patients received empirical antibiotics in the form of third generation cephalosporins for 5 days or until the results of ascitic culture and sensitivity become available then the patients received the antibiotics according to cultures. Followed second ascitic sample for measurement of TREM-1 was taken after treatment. Monitoring of the response was guided by improvement of clinical signs (fever and abdominal tenderness) and improvement of ascitic cell count taken after 48 hours from the start of antibiotic treatment. Among the 30 patients with SBP, 20 patients were males (66.7%) and 10 patients were females (33.3%). The mean and SD of age among the studied patients in SBP group was 53.9±8.5 years. Hepatitis C virus was the most common etiology of chronic liver disease in patients of SBP group (83%). In the current study (in SBP group), the main presenting symptoms among the patients with SBP were abdominal pain which was presented in (93%) and fever in (60%) of patients. The most common clinical sign was lower limb edema which was presented in all patients on general examination. While on abdominal examination, 60% of patients had tense ascites and 56.7% of patients had abdominal tenderness. Additionally, jaundice, enlarged spleen, enlarged liver and hepatic encephalopathy were noted in patients with SBP at a frequency of 60%, 70%, 86.7% and 30% respectively, 40% of patients had history of hematemesis. Abdominal pain, tenderness and fever were found to have significant statistical difference when compared with patients with non-infected ascites. All cases of chronic liver disease were diagnosed according to clinical, biochemical, and/or imaging findings. The severity of cirrhosis was categorized by Child-Pugh’s classification where Child class B and Child class C were represented in 26.7% and 73.3% of patients with SBP respectively. Moreover, the mean of MELD score between SBP group was 18.8 (±7.2). As regard the laboratory findings, the total leucocytic count was significantly higher in patients with SBP than in patients with non-SBP. The level of AFP and INR were significantly higher in patients with SBP than in patients with non-SBP. The serum albumin was significant lower in SBP patient than in control. Serum CRP and ESR were significantly higher in patients with SBP (44.7±35 and 33.1±19.6 respectively) than in patients with non-SBP (14.8±17.8 and 18.4±15.3 respectively). No difference between the two group in AST, ALT, Bilirubin and renal functions tests. In the current study ascitic fluid samples were obtained under complete aseptic conditions for ascitic fluid analysis which include routine appearance, biochemical tests, cell count, culture and the level of TREM-1. As regards ascitic fluid chemistry, all ascitic samples were transudate. In SBP group, the mean of ascitic fluid cell count and LDH level were significantly higher in comparison to the control group. The present study showed that the mean of ascitic fluid ascitic fluid albumin was significant lower in SBP patients. In our study, A high statistical significant difference was observed in ascitic fluid LDH and cell count in the SBP group patients before and after the treatment, ascitic fluid LDH and cell count levels were significantly higher before treatment than after treatment. The current study showed that there was high statistical significant difference between the two group in the base level of TREM-1 in which the mean was 1280 (1136.9) with level range between (580 - 4500) in SBP versus mean 129.9 (51.9) with level range between (60 - 250) in the control group, this result support the validity of TREM-1 in diagnosis of SBP. Also this study showed a statistical significant difference in the level of TREM-1 before and after treatment in the SBP patients in which the mean of TREM-1 before treatment was 1280.6 (1136.9) with level range between (580 - 4500) versus mean 376.2 (78.4) and level range between (260 - 560) after the treatment, this result support the prognostic value of TREM-1 in follow up the SBP patient. The ascitic culture and sensitivity taken from the studied patients was negative in all patient in control group with ascitic cell count less than 250 cells/mm3, while in SBP group showed that 18 patients had culture negative neutrocytic ascites (60%) and 12 patients had monomicrobial bacterascites (40%). The most frequently isolated microorganism was E. coli that was detected in three patients (10%) followed by Klebsiella, Staph coagulase negative, Acintobacter spp., Streptococcus Viridans, where each of them was isolated in two patients (6.7%). Our study on the 30 patients with ascitic SBP showed significant improvement in ascitic fluid TREM-1, cell count and culture 5 days after starting antibiotic treatment (cefotaxime 2gm every 8 hours). There was 12 patients (40%) with positive ascitic culture where ceftriaxone, imipenem, meropenem and cefotaxime were sensitive in 54.6% of patients while tazocin and gentamicin were sensitive in 45.5% and 36.4% of patients respectively, vancomycin, levofloxacin and ciprofloxacin were sensitive in 27.3% of patients. Although the third generation cephalosporins are still effective as first-line therapy as it was effective in treatment of infected ascites in our study with culture sensitivity about 55%.So, third-generation cephalosporins, especially Cefotaxime that can present at good concentration in the peritoneal fluid, continue to be the gold-standard antibiotic treatment for patients with infected ascites especially in community-acquired infections. |