Bactibilia e infección del sitio quirúrgico posterior a colecistectomía abierta / Bactibilia and surgical site infection after open cholecystectomy

Introducción: La bactibilia es la presencia de bacterias en bilis vesicular y está relacionada con la aparición de complicaciones sépticas y con el desarrollo de infección en herida quirúrgica de la colecistectomía. En este estudio investigamos si la bactibilia se correlaciona con infección de herida posterior a colecistectomía abierta. Material y métodos: Estudio observacional, descriptivo, de pacientes sometidos, entre enero y diciembre de 2006, a colecistectomía abierta en forma electiva por colecistitis crónica litiásica, a quienes se les realizó cultivo de bilis en el transoperatorio. Se identificaron dos grupos: con cultivo biliar negativo (grupo 1) y con cultivo biliar positivo (grupo 2). Las variables estudiadas fueron edad, sexo, resultados del cultivo, absceso, celulitis, seroma y hematoma. El análisis estadístico incluyó c2 de Pearson o prueba exacta de Fisher y t de Student. Resultados: Se estudiaron 80 pacientes (n = 40 por grupo), 24 hombres (30%) y 56 mujeres (70%), en quienes se practicó colecistectomía abierta y que contaban con cultivo biliar para el análisis. La morbilidad general fue de 42.5%. La tasa de infección del sitio quirúrgico fue de 11.25%. En el grupo 1, dos pacientes presentaron abscesos y dos celulitis; en el grupo 2, cuatro abscesos y uno celulitis. No hubo diferencia significativa al comparar la infección del sitio quirúrgico entre ambos grupos. Conclusiones: La presencia de bacterias en los cultivos de bilis vesicular no se correlacionó con el desarrollo de infección en herida quirúrgica posterior a colecistectomía.

BACKGROUND: Bactibilia is the presence of bacteria in gall bladder bile and may play a role in the appearance of septic complications. It has been related to increased rates of surgical site infection after cholecystectomy. In this study we investigated whether bactibilia correlates with the presence of surgical site infection after cholecystectomy. METHODS: In this observational and descriptive study we investigated those patients operated by open cholecystectomy because of chronic cholecystitis. Patients had bile culture during surgery (January-December 2006). There were two study groups: patients with negative biliary culture (group 1) and patients with positive biliary culture (group 2). Variables were age, gender, biliary culture reports, abscess, cellulitis, seroma, and hematoma. Statistical analysis included Pearson chi(2) or Fisher's exact test. For independent variables, Student t-test was used. RESULTS: Eighty patients were included (n = 40 per group). There were 24 males (30%) and 56 females (70%) who had open cholecystectomy and had biliary culture. General morbidity was 42.50% and surgical site infection rate in general was 11.25%. There were two patients with abscesses and two patients with cellulitis in group 1. There were four patients with abscesses and one patient with cellulitis in group 2. There was no statistically significant difference when comparing surgical site infection in both groups. CONCLUSIONS: The presence of bacteria in gall bladder cultures does not correlate with the development of surgical site infection after open cholecystectomy.

Significance of CEA Levels in Peripheral Venous Blood, Drainage Venous Blood, and Gallbladder Bile in Perdiciting Hepatic Metastases of Colorectal Cancer

Despite major diagnostic advances, 10-30% of hepatic metastases of colorectal carcinoma remain undetected. In this study, CEA levels of peripheral (p-CEA), drainage venous blood(d-CEA) and gallbladder bile(b-CEA) in patients with colorectal cancer were determined to examine the significance of their CEA levels in predicting hepatic metastases. From January 1993 through May 1996, p-CEA, d-CEA and b-CEA were obtained in 50 colorectal carcinoma patients without gallbladder pathology. Synchronous hepatic metastases were found in 5 patients(Hm group) and 45 cases had no hepatic metastasis. Among the 27 cases who followed up over 2 years, metachronous hepatic metastases(Hr group) were found in 6 cases and remaining 21 cases had no metastases(Ho group). Elevation of p-CEA, d-CEA, and b-CEA was significantly correlated with lymph node metastases and hepatic metastasis. The b-CEA levels were significantly correlated with p-CEA(r=0.533926, p 40 ng/ml had hepatic metastases(5 synchronous, 6 metachronous). However it is impossible to establish the possible of b-CEA because of high false positive and negative rate in predicting metachronous hepatic metastases. In conclusion, it is suggested that d-CEA could be highly sensitive indicator for selecting high-risk patients of metachronous hepatic metastases of colorectal cancer.