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Novel Diagnostics in Revision Arthroplasty: Implant Sonication and Multiplex Polymerase Chain Reaction
Published on: December 3, 2017
[Sensitivity and antibiotic resistance in infections of the musculoskeletal system]
Argenis Mata-Hernández1, Adrián Huematzin Rivera-Villa, Adrián Miguel-Pérez
1Hospital de Ortopedia, Unidad Médica de Alta Especialidad "Dr. Victorio de la Fuente Narváez", Instituto Mexicano del Seguro Social, Ciudad de México, México. ruben.torres@imss.gob.mx.
Background:
Infections of the musculoskeletal system are a devastating complication for patients, due to it's long rehabilitation process and even sometimes the removal of the implant, the chronicity of infection, is often due to lack of coverage in empirical antibiotics.
Methods:
A retrospective, observational, descriptive cohort study was performed. All cultures form musculoskeletal system infected patients reported of sensitivity and resistance of germs isolated were analyzed.
Results:
A total of 143 positive results were included. Reported more frequent germ Staphylococcus aureus accounted for 75 positive cases, followed by Escherichia coli with 31 positive results. Antibiotics with better sensitivity according to the type of microorganisms were trimethoprim-sulfamethoxazole and vancomycin, levofloxacin and linezolid, gentamicin, erythromycin and amikacin. Regarding antibiotic resistance, those reported with the highest percentage were penicillin G, amoxicillin with clavulanic acid and ampicillin.
Conclusions:
We recommend using empirical treatments in musculoskeletal system infections, trimethoprim-sulfamethoxazole are the best choice because they have the same sensitivity compare with vancomycin and a resistance rate of 7.6%. Betalactamics have a high percentage of resistance and low sensitivity so we must consider alternatives.
Insights
Empirical antibiotic treatment for musculoskeletal infections is crucial. Trimethoprim-sulfamethoxazole offers good sensitivity and low resistance, making it a recommended choice over highly resistant beta-lactams.
Area of Science:
- Infectious Diseases
- Orthopedic Surgery
- Microbiology
Background:
- Musculoskeletal infections pose significant challenges, including prolonged recovery and implant removal.
- Chronic infections often result from inadequate empirical antibiotic coverage.
- Developing effective treatment strategies is vital for patient outcomes.
Purpose of the Study:
- To analyze antibiotic sensitivity and resistance patterns in musculoskeletal infections.
- To identify optimal empirical antibiotic choices for these infections.
Main Methods:
- Retrospective, observational, descriptive cohort study.
- Analysis of germ sensitivity and resistance from infected musculoskeletal system cultures.
- Inclusion of 143 positive culture results.
Main Results:
- Staphylococcus aureus (75 cases) and Escherichia coli (31 cases) were the most frequent pathogens.
- Trimethoprim-sulfamethoxazole, vancomycin, levofloxacin, and linezolid showed good sensitivity.
- Penicillin G, amoxicillin/clavulanic acid, and ampicillin exhibited high resistance rates.
Conclusions:
- Trimethoprim-sulfamethoxazole is recommended for empirical treatment due to high sensitivity and low resistance (7.6%).
- Vancomycin demonstrates comparable sensitivity to trimethoprim-sulfamethoxazole.
- High resistance rates in beta-lactams necessitate alternative treatment considerations.
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