Related Experiment Video
Updated: Jul 19, 2026
A Mouse Model of Single and Repetitive Mild Traumatic Brain Injury
Published on: June 20, 2017
Influence of concomitant injuries on post-concussion symptoms after a mild traumatic brain injury - a prospective
V Ouellet1,2,3, V Boucher1,2, F Beauchamp1,2,3
1CHU De Québec-Université Laval Research Center, Quebec, Canada.
Abstract:
Objectives: To compare post-concussion symptoms (PCS) and return to normal activities between mild Traumatic Brain Injury (mTBI) patients with or without concomitant injuries at 7-and 90 days post-mTBI.Methods: Design: Sub-analysis of a multicentre prospective cohort study.
Participants And Setting:
patients with mTBI from 7 Canadian Emergency Departments.
Procedure:
Research assistants conducted telephone follow-ups using the Rivermead Postconcussion Symptoms Questionnaire (RPQ) at 7-, 30- and 90 days post-mTBI.
Main Outcome:
Presence of PCS (RPQ: ≥3 symptoms) at 90 days.
Secondary Outcomes:
RPQ score ≥21, prevalence of individual RPQ symptoms and patients' return to normal activities, at 7- and 90-days. Adjusted risk ratios (RR) were calculated.Results: 1725 mTBI patients were included and 1055 (61.1%) had concomitant injuries. Patients with concomitant injuries were at higher risk of having ≥3 symptoms on the RPQ (RR:1.26 [95% CI 1.01-1.58]) at 90 days. They were also at higher risk of experiencing specific symptoms (dizziness, fatigue, headaches and taking longer to think) and of non-return to their normal activities (RR:2.11 [95% CI 1.30-3.45]).Conclusion: Patients with concomitant injuries have slightly more PCS and seemed to be at higher risk of non-return to their normal activities 90 days, compared to patients without concomitant injuries.
