温度对冬眠动物五道眉松鼠心脏功能的影响  

Effect of Temperature on the Heart Function of the Five-Strip Eyebrow Squirrel

作　　者：刘东海[1] 张秋实[1] 刘丽艳[1] 郑建军[1] 唐世英[1] 张游[1] 丁玉昆[1] 张平[1] 

机构地区：[1]承德医学院,承德067000

出　　处：《生物医学工程学杂志》2003年第1期101-103,共3页Journal of Biomedical Engineering

摘　　要：利用离体做功心脏模型 ,研究温度对哺乳类冬眠动物—五道眉松鼠心脏功能的影响。用四道生理记录仪测定不同温度下的生理参数 :左心室收缩压峰值 ( L VSP)、左心室舒张末期压 ( L VEDP)、左心室内压变化率峰值(± dp/ dtmax)。结果表明 ,五道眉松鼠心脏力学性能随温度的变化曲线与非冬眠动物相似 ,但其心脏收缩功能随温度的变化范围较大 。This is an in vitro study designed to assess the effect of temperature variation on the heart function of the five-strip eyebrow squirrel-amammal of the hibernating kind.A heart model of exsomatizing action and for determining the physiological parameters with four physiological recorders was used to measure the LVSP,LVEDP and (±dP/dt max), respectively. It was found that the curves of the squirrel's heart mechanics property in relation to temperature variation are similar to the curves of the non-hibernating animals'. But, the squirrels' heart contraction function changes with in a much wider range,suggesting that their hearts are more tolerant of temperature variation.

关 键 词：温度 冬眠动物 五道眉松鼠 心脏功能 影响 

分 类 号：R318.52[医药卫生—生物医学工程]