Related Experiment Video
Updated: Aug 25, 2026

Investigating Alterations in Caecum Microbiota After Traumatic Brain Injury in Mice
Published on: September 19, 2019
[Antibiotic treatment for traumatic brain injury patients without positive bacterial cultures]
Goro Nagashima1, Jun Sasaki, Masao Kuzume
1Department of Neurosurgery, Fujigaoka Hospital, Showa University, 1-30 Fujigaoka, Aoba-ku, Yokohama-city, Kanagawa 227-8501, Japan. goro-n@po1.dti2.ne.jp
Abstract:
Prophylactic administration of antibiotics is prevalent for traumatic patients including head injury, when the patients have contaminated wounds, CSF leakage, and multiple injuries. In cases with prolonged fever and inflammatory signs, other antibiotics must be selected without confirming the infections by cultures. Usually, 1st or 2nd generation cefalosporins are selected as empiric therapy for traumatic patients, but, successive antibiotics are usually selected according to the situation. In this study, we analyzed 60 cases of head injured patients with Glasgow Coma Scale under 12, in terms of the selection of antibiotics and the reasons for the antibiotic selections. CEZ > PIPC > FMOX were used for initial treatment without any culture results. The second selection was made without any positive culture results in 85.7%, and tertiary selection without culture results in 50% of the patients. CPR > CFSL > FMOX > PAPM/BP were mainly used as second selection, and IPM/CS > CPR = PIPC were mainly used as tertiary selection. In cases with traumatic brain injuries, it is important to prevent antibiotic resistances. 1) by selecting appropriate antibiotics, 2) by using antibiotics after excluding catheter related infections, 3) by not using antibiotics and performing frequent cultures when no apparent infection focuses are detected.
Insights
Antibiotic selection for head-injured patients often lacks culture confirmation, leading to empiric use of cefalosporins and other agents. Preventing antibiotic resistance in traumatic brain injury requires careful selection and judicious use of antimicrobials.
Area of Science:
- Infectious Diseases
- Trauma Surgery
- Pharmacology
Context:
- Prophylactic antibiotic administration is common in trauma patients, especially those with head injuries, contaminated wounds, cerebrospinal fluid (CSF) leakage, or multiple injuries.
- Empiric antibiotic therapy, often initiated with 1st or 2nd generation cefalosporins, is frequently used for traumatic patients, particularly when prolonged fever or inflammatory signs are present without confirmed infections.
- Subsequent antibiotic selections are typically guided by clinical status rather than definitive culture results.
Purpose:
- To analyze antibiotic selection patterns and the rationale behind these choices in 60 head-injured patients with a Glasgow Coma Scale (GCS) score under 12.
- To evaluate the frequency of culture-confirmed infections influencing antibiotic choices in this patient cohort.
- To identify strategies for preventing antibiotic resistance in traumatic brain injury (TBI) cases.
Summary:
- Initial antibiotic treatments (cefazolin [CEZ], piperacillin [PIPC], or)}$.
- Subsequent antibiotic selections, such as Cefoperazone/Sulbactam (CFSL) or Imipenem/Cilastatin (IPM/CS), were often made without positive culture results (85.7% for second-line, 50% for third-line).
- The study highlights a trend of empiric antibiotic use, with limited reliance on microbiological data for treatment adjustments in head-injured patients.
Impact:
- Emphasizes the critical need to prevent antibiotic resistance in traumatic brain injury patients through appropriate antibiotic selection.
- Recommends strategies including judicious antibiotic use, exclusion of catheter-related infections, and the use of frequent cultures when infection sources are not apparent.
- Informs clinical practice regarding antibiotic stewardship in the management of head-injured patients.
Related Concept Videos
Brain Abscess l: Introduction
Traumatic Brain Injury l: Introduction
Bacterial Meningitis I: Introduction
Acute Pyelonephritis II: Diagnostic Studies and Management
Bacterial Meningitis
Bacterial Meningitis II: Pathophysiology