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Inicio Cirugía Española (English Edition) Microbiological etiology and current resistance patterns in acute calculous chol...
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Vol. 102. Issue 7.
Pages 373-380 (July 2024)
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Vol. 102. Issue 7.
Pages 373-380 (July 2024)
Original article
Microbiological etiology and current resistance patterns in acute calculous cholecystitis
Etiología microbiana y patrones de resistencia actuales en la colecistitis aguda litiásica
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Maite de Miguel-Palacioa,b,
Corresponding author
mdemiguel@psmar.cat

Corresponding author.
, Ana-María González-Castilloa,c, María Martín-Ramosa, Estela Membrilla-Fernándeza,c, Amalia Pelegrina-Manzanoa,c, María-José Pons-Frageroa, Luis Grande-Posaa,b, Juan-José Sancho-Insensera,b
a Servicio de Cirugía General, Hospital del Mar. Instituto Hospital del Mar de Investigaciones Médicas (IMIM), Barcelona, Spain
b Departamento de Cirugía, Universidad Autónoma de Barcelona, Barcelona, Spain
c Departamento de Medicina y Ciencias de la Vida, Universidad Pompeu Fabra, Barcelona, Spain
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Tables (2)
Table 1. Baseline characteristics of patients with “pure” acute calculous cholecystitis.
Table 2. Characteristics of patients from whom samples were taken (bile and/or peritoneal exudate and/or hemocultures).
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Additional material (2)
Abstract
Introduction

The current treatment for acute calculous cholecystitis (ACC) is early laparoscopic cholecystectomy, in association with appropriate empiric antibiotic therapy. In our country, the evolution of the prevalence of the germs involved and their resistance patterns have been scarcely described. The aim of the study was to analyze the bacterial etiology and the antibiotic resistance patterns in ACC.

Methods

We conducted a single-center, retrospective, observational study of consecutive patients diagnosed with ACC between 01/2012 and 09/2019. Patients with a concomitant diagnosis of pancreatitis, cholangitis, postoperative cholecystitis, histology of chronic cholecystitis or carcinoma were excluded. Demographic, clinical, therapeutic and microbiological variables were collected, including preoperative blood cultures, bile and peritoneal fluid cultures.

Results

A total of 1104 ACC were identified, and samples were taken from 830 patients: bile in 89%, peritoneal fluid and/or blood cultures in 25%. Half of the bile cultures and less than one-third of the blood and/or peritoneum samples were positive. Escherichia coli (36%), Enterococcus spp (25%), Klebsiella spp (21%), Streptococcus spp (17%), Enterobacter spp (14%) and Citrobacter spp (7%) were isolated. Anaerobes were identified in 7% of patients and Candida spp in 1%. Nearly 37% of patients received inadequate empirical antibiotic therapy. Resistance patterns were scrutinized for each bacterial species. The main causes of inappropriateness were extended-spectrum beta-lactamase–producing bacteria (34%) and Enterococcus spp (45%), especially in patients older than 80 years.

Conclusions

Updated knowledge of microbiology and resistance patterns in our setting is essential to readjust empirical antibiotic therapy and ACC treatment protocols.

Keywords:
Acute calculous cholecystitis
Empirical antibiotic therapy
Broad-spectrum antibiotic therapy
Microbiology
Multidrug-resistant bacteria
Extended-spectrum beta-lactamases
Antibiotic appropriateness
Elderly
Abbreviations:
ACC
AC
EAT
TG18
ERCP
ESBL
CI
IQR
OD
Resumen
Introducción

El tratamiento actual de la colecistitis aguda litiásica (CAL) es la colecistectomía laparoscópica precoz, asociada a una antibioticoterapia empírica apropiada. La prevalencia de los gérmenes causantes y sus resistencias han sido poco descritas en nuestro medio. El objetivo del estudio fue analizar la etiología bacteriana y sus patrones de resistencia antibiótica en CAL.

Métodos

Estudio observacional unicéntrico, retrospectivo, de pacientes consecutivos diagnosticados de CAL en 01/2012-09/2019. Se excluyeron los pacientes con diagnóstico concomitante de pancreatitis, colangitis, colecistitis postoperatoria, estudio anatomopatológico de colecistitis crónica o carcinoma. Se recogieron variables demográficas, analíticas, terapéuticas y microbiológicas, incluyendo hemocultivos preoperatorios, cultivos biliares y de exudado peritoneal.

Resultados

De un total de 1104 CAL, se tomaron muestras en 830 pacientes: biliares en 89%, de líquido peritoneal y/o hemocultivos en 25%. La mitad de los cultivos biliares y menos de un tercio en sangre y/o peritoneo resultaron positivos. Se aislaron E.coli (36%), Enterococcus spp. (25%), Klebsiella spp. (21%), Streptococcus spp. (17%), Enterobacter spp. (14%) y Citrobacter spp. (7%). Se identificaron anaerobios en el 7% y Candida spp. en 1%. El 37% de los pacientes recibieron una antibioticoterapia empírica inadecuada. Se analizaron detalladamente los patrones de resistencia para cada especie bacteriana. Las bacterias productoras de beta-lactamasas de espectro extendido (34%) y Enterococcus spp. (45%) fueron las principales causantes de la inadecuación, especialmente en pacientes >80 años.

Conclusiones

El conocimiento actualizado de la microbiología y patrones de resistencia en nuestro medio resulta fundamental para reajustar la antibioticoterapia empírica y los protocolos de tratamiento de la CAL.

Palabras clave:
Colecistitis aguda litiásica
Antibioterapia empírica
Antibioterapia amplio espectro
Microbiología
Bacterias multirresistentes
Beta-Lactamasas de espectro extendido
Adecuación antibiótica
Ancianos

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