Received date: March 07, 2013; Accepted date: June 20, 2013; Published date: June 28, 2013
Citation: Dogan M, Kucukkartallar T, Feyzioglu B, Ozdemir M, Baykan M, et al. (2013) Isolation of Anaerobic Bacteria from the Peritoneal Fluid of Patient who has Unstrangulated Umbilical Hernia. J Med Microb Diagn 2:124. doi:10.4172/2161- 0703.1000124
Copyright: © 2013 Dogan M, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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mUbilical hernia; Unstrangulation; Anaerobe; Bacterium
Anaerobic bacteria can be isolated from the human body as a component of the normal flora. These bacteria are mostly saprophytic microorganisms and may be cause infection in a variety of situations as having the predisposing factor for anaerobic infection [1-3]. These infections are usually mixed, and isolated microorganisms vary according to the localization. Anaerobic infections in humans generally originate from endogenous flora, and Bacteroides species have been mostly isolated in the clinical specimens. This was followed by Peptostreptococcus, Fusobacterium and Gram positive non-spore forming bacteria [1-3].
In the conditions that have impaired function or tissue integrity as strangulated ventral hernia in patients, peritoneal fluid can be infected with translocation of variety of intestinal microorganisms and this condition can be cause peritonitis. However, these infections are rare in uncomplicated cases such as unstrangulated hernia [1-3]. In this case report, it is emphasized that anaerobic bacteria and other bacteria can be isolated from patients with unstrangulated umbilical hernia to be cause of peritonitis.
A 94-year-old female patient was admitted to the emergency department of Meram Medical Faculty with complaining of abdominal pain. In the abdominal examination, unstrangulated umbilical hernia was observed and there was mild tenderness in the abdomen. The patient was undergone underwent surgery, and hernia was repaired under the local anesthesia because of the patient old. The liquid that has accumulated in the hernia sac was taken for Gram stain and culture. After surgery of the patient, ceftriaxone and metronidazole were ordered empirically.
Five ml from peritoneal fluid that has accumulated within the hernia sac was inoculated BACTEC plus Anaerobic F (Becton Dickinson-Maryland, USA) flask, and it was incubated at 37°C. In addition, the fluid sample was inoculated on blood agar and EMB (eosin methylene blue) agar medium for aerobic isolation and was inoculated on Schaedler agar medium (Oxoid, Hampshire, United Kingdom) for anaerobic isolation, and they were incubated at 37°C.
In the microbiological examination by Gram stain no microorganisms was observed. No microorganisms were observed in aerobic and anaerobic agar media, but the blood culture appliance (BACTEC) given positive signal. Then, the subculture were performed to Schaedler agar medium (Oxoid, Hampshire, United Kingdom) for anaerobic isolation, and were performed to blood agar and EMB agar for aerobic isolation.
Isolated facultative anaerobic bacteria were identified as E. coli and Enterococcus spp. by using conventional methods and antibiotic susceptibility testing was performed by disk diffusion method. Isolated anaerobic bacterium was identified as B. fragilis, by using conventional methods and the API 20 a panel, and An-Ident Discs tests and Antimicrobial susceptibility testing was performed by E test methods.
In the antibiotic susceptibility tests, the E. coli and B. fragilis were susceptible to the antibiotics that were ordered empirically. The therapy was continued with ciprofloxacin and metronidazole during two weeks because Enterococcus spp. was isolated. The patient was discharged by healing without any complication.
Although ventral hernias may be asymptomatic, patients may be admitted to the clinician because of abdominal pain. This pain may occur sometimes because of complications such as strangulation and incarceration [4,5]. In the presence of ventral hernias that have complications as strangulation and incarceration, peritoneal fluid may be infected with intestinal flora bacteria and it may be cause of peritonitis. These microorganisms that may lead to contaminate the abdomen are often anaerobic bacteria, gram-negative bacilli and enterococci. As much as 60%, the anaerobic bacteria can be isolated in these infections. However, if there isn’t any predisposing factor as strangulated hernia, these infections rarely observed [3,6,7].
De Ruiter et al.  have reported that isolated microorganism from 69% of cases with sepsis in abdominal fluid samples, and 70% of the isolated microorganism were mixed microorganisms that including anaerobic bacteria. Anaerobic and facultative anaerobic bacteria were commonly isolated in the peritoneal fluid samples by Stone et al. . Al-Saadi et al.  have reported that the most frequently isolated bacteria were E. coli and Bacteroides in the peritoneal fluid sample of the patients who were operated on appendectomy that most of them appendix were perforated or incarcerated. Anaerobic bacteria were isolated from peritoneal fluid samples by Dogan and Baysal and in this study; the most common isolated anaerobic bacterium has been reported as B. fragilis .
A variety of reasons, microorganisms can be isolated as cause of infection in the peritoneal fluid. However, this case was remarkable with some characteristics. As a priority, cooperation with the patient because of old age was difficult. In abdominal examination, there was no marked sign. Any complication as strangulation was unexpected with the examination. Although microorganisms were not detected in the microbiological examination of peritoneal fluid, microorganisms which can be normally found in intestinal flora were isolated by using of the anaerobic culture bottle that used for the blood culture at the routine and has an automated incubation system. One of isolated microorganisms were an anaerobic bacterium that can be overlooked most of the time because of the difficulties have been experienced to the isolation and identification of these bacteria. Explain transition these bacteria into the peritoneal fluid were not detected to any other pathology.
As a result, even if there is no complication as strangulation to patients with abdominal ventral hernia, it should be considered that anaerobic and other bacteria may be cause of peritonitis.
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