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In July 2016, a mass-casualty stabbing attack took place at a facility for disabled persons located in Sagamihara City (Kanagawa Prefecture, Japan). The attack resulted in 45 casualties, including 19 deaths. The study hospital dispatched physicians to the field and admitted multiple casualties. This report aimed to review the physicians’ experiences and to provide insights for the formulation of response measures for similar incidents in the future.
This incident involved 30 emergency teams and 12 fire department teams, including those from neighboring fire departments. Five physicians from three medical institutions, including the study hospital, entered the field. The Simple Triage and Rapid Treatment (START) method was used on the field. The final field triage category count was: 20 red, four yellow, two green, and 19 black tags. All the casualties (n = 26) except for the 19 black tag casualties were transported to one of six neighboring medical institutions.
The median age of the transported casualties was 41 years (interquartile range [IQR] = 35.5 – 42.0). Three casualties (21.4%) were in hemorrhagic shock on arrival at the hospital. Twelve patients had multiple cervical stab wounds (median four wounds; IQR = 3.75 – 6.0). A total of 91.7% of these stab wounds were in mid-neck Zone II region. Of the 12 patients with cervical stab wounds, four (33.3%) required emergency surgery, and the rest were sutured on an out-patient basis. One patient had already been sutured on the field. All patients requiring emergency surgery had deep wounds, including those of the carotid vein, thyroid gland, nerves, and the trachea. Eight of the casualties were hospitalized at the study institution. Five of them were admitted to the intensive care unit. There were no deaths among the casualties transported to the hospitals.
Regional core disaster medical hospitals must take on a central role, particularly in the case of local disasters. Horizontal communication and interactions should be reinforced by devising protocols and conducting joint training for effective inter-department collaborations on the field.
Maruhashi, T, Takeuchi, I, Hattori, J, Kataoka, Y, Asari, Y. The Tsukui (Japan) Yamayuri-en facility stabbing mass-casualty incident. Prehosp Disaster Med. 2019;34(2):203–208
We quantified an absolute imbalance of the medical risks and the support needs for children at each disaster-based hospital in Kanagawa immediately following the occurrence of a large earthquake by using the risk resource ratio (RRR) and need for medical resources (NMR).
The RRR and NMR of 33 disaster-based hospitals were estimated through dividing the estimated number of pediatric victims by the number of critically patients. We calculated the ratio of the NMR of each hospital.
The total number of pediatric victims in Kanagawa was estimated at 8,391. The total number of vacant beds for pediatric victims was 352. The median RRR and NMR of the total number of pediatric victims were 27 and 224. The median RRR and NMR of the number of critically ill pediatric patients were 27 and 12.
The absolute imbalance of the RRR and NMR for children in Kanagawa was quantified. This suggests that we might embark on preparedness strategies for children in advance. (Disaster Med Public Health Preparedness. 2018;13:672–676)
Abnormalities of p53 tumour suppressor gene are detected in a diversity of malignancies and play an important role in their pathogenesis. Hypopharyngeal carcinoma is the most morbid among head and neck squamous cell carcinomas because of the high incidence of treatment failures and because a biological marker predictive of the treatment failures remains elusive. The expression of p53 protein in 46 hypopharyngeal squamous cell carcinomas was examined histochemically and p53 immunoreactivity was found in 19 of 46 cases (41.3 per cent). The rate of second primary tumour development was significantly higher in the p53-positive group than in the p53-negative group (p = 0.039), whereas that of tumour recurrence was not significantly different between the two. Moreover, there was no statistically significant difference in either overall or disease-free survival between the p53-positive and -negative groups. These results indicate that although p53 expression significantly correlates with second primary tumour development in patients with hypopharyngeal squamous cell carcinomas, it is not predictive of the clinical outcome.
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