This prospective multi-institutional cohort study evaluated the use of chemical venous thromboembolism (cVTE) prophylaxis in high-risk pediatric trauma patients.
VTE events are uncommon in pediatric trauma, affecting less than 1% of the general population, yet they can have serious consequences.1
In critically injured adolescent trauma patients, pharmacologic prophylaxis against VTE is a viable strategy. However, the effectiveness of this prevention relative to its potential risks remains unverified in this group. While recent recommendations have introduced high-risk criteria for cVTE use, these criteria have yet to be evaluated prospectively.
This study therefore, aimed to determine the safety and efficacy of cVTE based on established high-risk criteria.
The primary outcome assessed was the overall rate of VTE, categorized based on the administration and timing of cVTE. The secondary outcome focused on the safety of cVTE, evaluated through instances of bleeding or other complications associated with anticoagulant use.
The study included 460 paediatric trauma patients from eight Level I pediatric trauma centres. The median age was 14.5, and the majority of participants were male (68%). The cohort exhibited a median Injury Severity Score of 23, reflecting significant trauma severity.
The following findings were recorded:
- Among the participants, 54.5% received cVTE, 13.5% of whom received it within 24 hours of admission
- A delay in cVTE administration was associated with a higher number of high-risk factors and a greater Injury Severity Score
- The primary reason for delayed cVTE was central nervous system bleeding (30.2% of cases)
- In terms of outcomes, the overall rate of VTE was 5.4%, with occurrences distributed as follows: 1.6% among those receiving cVTE within 24 hours, 6.9% in those who received treatment after 24 hours, and 5.3% for those who did not receive cVTE at all
- No bleeding complications were observed while patients received cVTE
The analysis indicated a significant association between the time to cVTE initiation and VTE risk, with each hour of delay correlating with a higher likelihood of developing VTE (odds ratio, 1.01).
Importantly, no bleeding complications were reported during the administration of vCTE.
The study concludes that cVTE prophylaxis, when guided by defined high-risk criteria, is safe for paediatric trauma patients and does not lead to significant bleeding complications.
However, delays in the initiation of cVTE are associated with increased VTE risk. Therefore, improving the timing of prophylaxis and addressing barriers to implementation may enhance the prevention of VTE in pediatric trauma patients, emphasizing the need for protocol optimization in clinical practice.