Injury is a major cause of worldwide child mortality. This retrospective nationwide study aimed to evaluate the characteristics of paediatric injured patients in Japan and their in-hospital mortality trends from 2009 to 2018. Injured patients aged <17 years were enrolled. Data were extracted from the Japan Trauma Data Bank. In the Cochran-Armitage test, in-hospital mortality significantly decreased during the study period (p < 0.001), except among patients <1 year old, and yearly reductions were observed among those with an Injury Severity Score ≥16 and survival rate ≥50% (p < 0.001). In regression analyses, patients who underwent urgent blood transfusion within 24 h after hospital admission (odds ratio (OR) = 3.24, 95% confidence interval (CI) = 2.38–4.41) had a higher in-hospital mortality risk. Higher survival probability as per the Trauma and Injury Severity Score was associated with lower in-hospital mortality (OR = 0.92, 95% CI = 0.91–0.92), a risk which decreased from 2009 to 2018 (OR = 6.16, 95% CI = 2.94–12.88). Based on our results, there is a need for improved injury surveillance systems for establishment of injury prevention strategies along with evaluation of the quality of injury care and outcome measures.
Introduction It remains unclear whether trauma centers are effective for the treatment of injured pediatric patients. The aim of this study was to evaluate children’s mortality before and after the establishment a trauma center by using standard mortality ratios (SMR) and a modified observed-expected chart. Methods This was a single center, retrospective chart review study that included injured pediatric patients (age <16 years) who were transported to our trauma center by the emergency medical services from 2012 to 2016 in Japan. Results Our study included 143 subjects: 45 (31%) were preschoolers aged < 6 years, and 43 (30%) had an injury severity score (ISS) ≥ 16. After the trauma centers established, the number of patients increased (70% increase per month), as did the number of the patients with an ISS of 41–75. The percentage of indirect transportations was significantly higher in the trauma center than in the non-trauma center (49% vs. 28%; p < 0.05). The SMR was significantly lower in the trauma-center than in the non-trauma center (0.461 vs. 0.589; p < 0.05). The mean value of the modified observed-expected chart was significantly higher in the trauma-center than in the non-trauma center (4.6 vs. 2.3; p < 0.05). For the patients who were directly transferred to our center, the transfer distance was greater in the trauma-center than in the non-trauma center (6.8 vs. 6.2 km; p < 0.05). The time interval from hospital admission to initiation of computed tomography (15.5 vs. 33 minutes; p < 0.05) and to definitive care (44 vs. 64.5 minutes; p < 0.05) decreased in the after group compared to the non-trauma center. Conclusions The results of our study revealed that the centralization of pediatric injured pediatric patients in trauma centers improved the mortality rate in this population in Japan.
Traumatic brain injury (TBI) is the major cause of mortality and morbidity in severely-injured patients worldwide. This retrospective nationwide study aimed to evaluate the age- and severity-related in-hospital mortality trends and mortality risks of patients with severe TBI from 2009 to 2018 to establish effective injury prevention measures. We retrieved information from the Japan Trauma Data Bank dataset between 2009 and 2018. The inclusion criteria for this study were patients with severe TBI defined as those with an Injury Severity Score ≥ 16 and TBI. In total, 31,953 patients with severe TBI (32.6%) were included. There were significant age-related differences in characteristics, mortality trend, and mortality risk in patients with severe TBI. The in-hospital mortality trend of all patients with severe TBI significantly decreased but did not improve for patients aged ≤ 5 years and with a Glasgow Coma Scale (GCS) score between 3 and 8. Severe TBI, age ≥ 65 years, fall from height, GCS score 3–8, and urgent blood transfusion need were associated with a higher mortality risk, and mortality risk did not decrease after 2013. Physicians should consider specific strategies when treating patients with any of these risk factors to reduce severe TBI mortality.
Background Emergency medical service (EMS) providers are the first medical professionals to make contact with patients in an emergency. However, the frequency of care by EMS providers for severely injured children is limited. Vital signs are important factors in assessing critically ill or injured patients in the prehospital setting. However, it has been reported that documentation of pediatric vital signs is sometimes omitted, and little is known regarding the performance rate of vital sign documentation by EMS providers in Japan. Using a nationwide data base in Japan, this study aimed to evaluate the relationship between patients’ age and the documentation of vital signs in prehospital settings. Methods This study was a secondary data analysis of the Japan Trauma Data Bank. The inclusion criterion was patients with severe trauma, as defined by an Injury Severity Score ≥ 16. Our primary outcome was the rate of recording all four basic vital signs, namely blood pressure, heart rate, respiratory rate, and level of consciousness in the prehospital setting among different age groups. We also compared the prehospital vital sign completion rate, that is, the rate at which all four vital signs were recorded in a prehospital setting based on age groups. Multivariate analysis was performed to evaluate factors associated with the prehospital vital sign completion rate. Results We analyzed 75,777 severely injured patients. Adults accounted for 94% (71400) of these severely injured patients, whereas only 6% of patients were children. The rate of prehospital recording of vital signs was lower in children ≤5 years than in adult patients for all four vital signs. When the adult group was used as a reference, the adjusted odds ratios of vital sign completion rate in infants (0 years), younger children (1–5 years), older children (6–11 years), and teenagers (12–17 years) were 0.09, 0.30, 0.78, and 0.87, respectively. Conclusions Analysis of the nationwide trauma registry showed that younger children tended to have a lower rate of vital sign documentation in prehospital settings.
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