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Prophylactic antibiotics for the prevention of meningitis after traumatic pneumocephalus
ISRCTN ISRCTN71132784
ClinicalTrials.gov identifier
Public title Prophylactic antibiotics for the prevention of meningitis after traumatic pneumocephalus
Scientific title
Acronym N/A
Serial number at source N/A
Study hypothesis Chemoprophylaxis with antibiotics is both feasible and desirable for prevention of a potentially serious disease when specific groups at risk can be defined and when a safe, effective, and affordable prophylactic agent is available. One of such potentially serious diseases is post-traumatic meningitis. The incidence of post-traumatic meningitis after head trauma ranges from 0.2 to 17.8 per cent and increases significantly in the presence of skull base fracture, pneumocephalus or cerebrospinal fluid (CSF) leak.

Considering the serious complications of the post-traumatic meningitis, the idea of chemoprophylaxis with antibiotics for prevention of post-traumatic meningitis has always been considered rational, but the efficacy of prophylactic antibiotic agents in the setting of post-traumatic CSF leakage is still controversial.
Lay summary
Ethics approval This study has been ethically approved by Sina Trauma and Surgery Research Center, Tehran University.
Study design Randomised controlled trial
Countries of recruitment Iran
Disease/condition/study domain Traumatic pneumocephalus (entrance of air into the cranium after head trauma)
Participants - inclusion criteria 1. Traumatic pneumocephalus verified by brain computed tomography (CT) scan
2. The patients should be hospitalised less than 24 hours after trauma
Participants - exclusion criteria 1. Patients who have received antibiotic therapy for other reasons
2. Individuals with penetrating traumatic brain injury, open skull fractures or operated for any causes
3. Those who are discharged from hospital with personal consent
4. All cases with life threatening lesions including severe brain, abdominal or vascular injuries and death due to other causes
Anticipated start date 01/12/2004
Anticipated end date 31/12/2005
Status of trial Completed
Patient information material
Target number of participants 186
Interventions The patients are divided into three groups:
1. Intravenous antibiotics (IV)
2. Oral antibiotics (O)
3. Placebo (P)

In the IV group, ceftriaxone 2 g twice daily (BID) plus oral placebo will be given and in the O group, azithromycin 500 mg in the first day followed by 250 mg daily plus intravenous placebo for the rest will be continued for 7 days. Antibiotics should be started in less than 24 hours after trauma.
Primary outcome measure(s) The frequency of bacterial meningitis in IV, O and P groups.
Secondary outcome measure(s) 1. The frequency of rhinorrhoea, intracranial haemorrhage and skull base fracture, volume and location of intracranial air in the population study and each of the IV, O and P groups.
2. The mortality rate in study population and each of the IV, O and P groups
Sources of funding 1. Sina Trauma and Surgery Research Center (Iran)
2. Tehran University of Medical Sciences (Iran)
Trial website
Publications Design and rationale of trial in http://www.ncbi.nlm.nih.gov/pubmed/16542035
Contact name Dr  Behzad  Eftekhar
  Address Dept of Neurosurgery
Sina Hospital
Imam Ave
  City/town Tehran
  Zip/Postcode 15116
  Country Iran
  Email eftekhar@sina.tums.ac.ir
Sponsor Tehran University of Medical Sciences (TUMS) (Iran)
  Address Sina Trauma and Surgery Research Center
Sina Hospital
Imam Ave
  City/town Tehran
  Zip/Postcode 11365/3876
  Country Iran
  Email sintrc_head@sina.tums.ac.ir
Date applied 02/03/2005
Last edited 18/02/2008
Date ISRCTN assigned 11/03/2005
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