Evaluation of Professional Practices in the Management of Blunt Abdominal Trauma in Children in the Pediatric Emergency

Blunt Abdominal Trauma in Children, Identifying Intra Abdominal Injuries

Blunt abdominal trauma, Pediatric emergency, Intra-abdominal injuries

The aim of our study is primarily to evaluate the professional practices over the last years in the pediatric emergencies of the Nancy's Hospital for the BATiC. This, in order to identify the traumatic mechanisms and the initial clinical elements which would make it possible to detect the patients at low risk of developing visceral lesions. Then, a management could be proposed which would rationalize the use of additional examinations and would favor the monitoring and the clinical reassessment after the initial management of a minor trauma. The study of the data will then aim to establish a composite score (anamnestic and clinical) of initial evaluation, from which could result a uniform management protocol (clinical, biological and imaging) of the minor BATiC, of the intermediate BATiC and the major BATiC, applicable to pediatric emergencies at the Nancy's Hospital.

For children aged 1 to 18, trauma is one of the leading causes of death, ahead of cancer and congenital malformations. The traumatic mechanisms are mainly accidents on public roads (car accidents, two-wheel accidents, accidents involving a pedestrian), sports accidents (especially cycling and horse riding), falls from a high height or onto a blunt object, and intentional or unintentional direct hits. Mortality is mainly correlated with involvement of the skull, thorax and abdomen and there is a clear male predominance (sex ratio 2 to 3 boys / 1 girl). In France, blunt abdominal trauma in children (BATiC) is a frequent reason for consultation in pediatric emergencies. It accounts for 20 to 30% of childhood trauma, among which 10 to 30% result in potentially life-threatening intra-abdominal injuries (IAI). In order of frequency, the organs most affected are the spleen, the liver, kidneys and the pancreas. Rarely, hollow organs such as the small intestine, the duodenum, the colon, or the stomach can be affected. In rarer occasion, sores of the mesentery may be seen to. BATiC is opposed to penetrating abdominal trauma, which accounts for only 5 to 15% of abdominal trauma in children. It is frequently part of a multiple trauma defined by a child who has suffered a trauma whose kinetics are likely to cause at least two lesions, at least one of which can be life-threatening. While multiple trauma accounts for only 14% of childhood trauma, it is nonetheless the main cause of death after the age of 1. For several years, this has motivated the establishment of emergency treatment protocols under the impetus of the development of trauma centers. Therefore, polytrauma has well-codified diagnostic criteria and precise and systematic management, applicable to pediatric emergencies. Regarding the isolated BATiC, the management is less unequivocal. Although it is more frequent, BATiC with low or medium kinetics does not benefit from any clear management protocol. Indeed, the management of a child admitted for BATiC in the pediatric emergency room does not necessarily take into account the traumatic mechanism. The course of action currently adopted involves at least an initial clinical evaluation, sometimes repeated after a period of monitoring. Then it is frequently supplemented by the performance of a blood test and imaging aimed at detecting possible IAI. In current practice, some practitioners choose this systematic approach of BATiC, including complementary examinations from the outset, in order to never ignore an IAI. Others seem to support a more reserved attitude to the use of complementary exams when the initial assessment is reassuring. It is clear that many abdominal traumas are not complicated by any visceral injury. Especially when the traumatic mechanism is minimal and when the initial clinical evaluation does not identify elements of seriousness. In these different situations, carrying out additional examinations may indeed seem excessive. Therefore, there is a great heterogeneity of BATiC and a strongly practitioner-dependent care which does not always take into account the minor traumatic mechanism. Establishing a validated management protocol for BATiC, as can be the case with polytrauma, is difficult due to the great diversity of traumatic mechanisms and their variable kinetics. All the more so since the same mechanism does not systematically expose people to the same lesions depending on the child's age and its morphological characteristics. It is fundamental to take into consideration the anatomical and physiological specificities of the growing child which define his fragility in the face of abdominal trauma. Another difficulty lies in the anamnestic collection of facts which may be limited due to the child's age, his apprehension (hospital environment, reaction of the caregiver), the medical context (general condition, underlying pathology, psychological state) and the social context (particular case of mistreatment). This is all the more difficult when the trauma is not seen by a third party at all. Several studies have already sought to define predictive scores for IAI. These scores are established after performing additional laboratory tests and almost always include performing an abdominal ultrasound. They have the advantage of reducing the use of the scanner, thus exposure to ionizing rays, but do not simplify the management of minor trauma for which it would be possible not to perform additional examinations at all, if they are defined beforehand. Retrospective study of the anamnestic and clinical elements of patients without any IAI could allow the identification of clinical situations in which the performance of complementary examinations is not necessary. In this way, the course of action for minor trauma could be simplified by promoting surveillance and clinical reassessment rather than the routine use of additional tests, thereby reducing the time spent in the pediatric emergency room.

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