Evaluation of blast injury in animals in closed cabins
10.3969/j.issn.1009-0754.2017.03.001
- VernacularTitle:密闭舱室内爆炸致兔损伤的伤情分析
- Author:
Liyang LIU
1
;
Ming HU
;
Cheng XU
;
Jiahai CHEN
;
Jing WANG
;
Longgang LIU
;
Jun LI
;
Dike RUAN
Author Information
1. 第二军医大学海军临床医学院骨科
- Keywords:
Blast injury;
Closed cabin;
Injury evaluation;
Rabbit
- From:
Journal of Navy Medicine
2017;38(3):193-198
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the main features and distribution pattern of blast injury in animals in close cabins of the ship.Methods The multi-cabin ship model was built by scale of 1:1 and typical internal structures were simulated as the practical ship.Seventy-six experimental rabbits were placed in the cabins.The animals were divided into 4 groups,by the sequence of live ammunition the first,rude ammunition the second,small caliber ammunition the first,large caliber ammunition the second.Then,the animals were randomly designated into 5 sub-groups,by the way of their positions in different cabins,and their positions in front of cabinets or behind cabinets.Two types of caliber live and rude ammunitions were exploded in the cabin.Then close observations were made on the death and injury of the animals.Results Total mortality rate of the animals was 59.2％,and the mortality rate of the live ammunition group was 63.2％,and there was no statistical significance,as compared with that of the nude ammunition group(55.3％) (P =0.05).The mortality rate of the large caliber group was.73.7％,which was higher than that of the small caliber group(44.7％),and statistical significance could be seen when comparisons were made between the 2 groups (P =0.010).There was no statistical significance in the mortality rates of various cabins in the explosions of small caliber ammunition (P =0.128).The mortality rates of various cabins in the explosions of large caliber ammunition were not identical (P =0.000),with the mortality rate of the explosion cabin being the highest,the neighboring cabin and the next-door cabin came the next.The main culprits for the mortalities were shock wave and blast fragments which caused severe injury to important organs of the body.Conclusion In the multi-cabin configuration of the ship,the integrated cabin structure and inboard cabinets could offer significant protection to personnel inside.The mortality rate caused by large caliber ammunition was significantly larger than that of the rate caused by small caliber ammunition.However,there was no statistical significance in the mortality rates caused by live ammunition and nude ammunition.The above casualty features provided a new research orientation in the protection and medical care of personnel onboard,when explosions occurred in the close cabins of the ship.
