不同湿热环境下猫颅脑损伤后生命体征变化及生存曲线分析

Vital signs changes and survival curve analysis of cats after craniocerebral injury under different environments of temperature and humidity

目的:研究高温高湿环境下猫颅脑火器伤后生命体征变化特点及生存时间。方法:杂种猫32只随机分为4组,火器伤后分别放入A(25℃、相对湿度50%),B(35℃、相对湿度85%),C(38℃、相对湿度90%),D(40℃、相对湿度95%)4种环境中。每隔10min记录1次血压、心率、呼吸频率及体温,到6h时结束实验。结果:常温枪伤组实验过程中生命体征稳定,随着温度及湿度的增加,各组动物相同时间点的体温、呼吸及心率均明显不同(P<0.05)。A,B组动物在伤后6h内均全部获得生存;C组1.5～2.0h开始死亡,至5h动物全部死亡,平均存活时间为(3.4±0.8)h;D组0.5～1.0h开始死亡,至2.5h动物全部死亡,平均存活时间为(2.0±0.5)h。结论:高温高湿环境对颅脑火器伤时的生命体征和生存时间影响显著。

AIM:To investigate the changing characteristic of vital signs and survival time of cats after craniocerebral injury in the environment of high temperature and humidity. METHODS:Thirty two cross bred cats were randomly divided into four groups and put into the following environments respectively after fire arm injury: A (25 ℃, relative humidity 50%); B(35 ℃, relative humidity 85%);C(38 ℃, relative humidity 90%); D(40 ℃, relative humidity 95%).The blood pressure, heart rate, respiratory frequency and body temperature were recorded every 10 minutes until 6 hours later. RESULTS:The vital signs in the gunshot wound under normal temperature group observed in the experiment were stable, and along with the increase of temperature and humidity, the body temperature and respiratory frequency and heart rate of cats in each group were significantly different at the same point of time (P< 0.05). The cats in group A and B were survival in 6 hours, while the cats in group C began to die after 1.5-2.0 h and all died 5 hours later, and the mean survival time was (3.4±0.8) h. The cats in group D began to die 0.5-1 h later and all died after 2.5 hours, and the mean survival time was (2.0±0.5) h. CONCLUSION:The environment of high temperature and humidity can significantly affect the changes of vital signs and survival time of the cats with craniocerebral injury.