HEART-RATE RESPONSES OF THE MOLE RAT (SPALAX-EHRENBERGI) IN HYPERCAPNIC, HYPOXIC, AND COLD CONDITIONS
HEART-RATE RESPONSES OF THE MOLE RAT (SPALAX-EHRENBERGI) IN HYPERCAPNIC, HYPOXIC, AND COLD CONDITIONS
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DOI：
10.1086/physzool.54.1.30155800
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发表时间：
1981-01-01
期刊：
影响因子：
--
通讯作者：
AR, A
中科院分区：
文献类型：
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作者：
ARIELI, R;AR, A
将窝鼹鼠静息时的心率与白鼠在常氧、高碳酸血症和低氧条件下、热中性和寒冷条件下的心率进行比较。鼹鼠在热中性和含氧量正常时的心率为142±。标准差/15 分钟白鼠心率 < 0.5 且.apprx。 0.4 同等大小的正常哺乳动物的预期值。心率呈心律失常。摩尔率的心率在 PCO2 = 36 托以下时对高碳酸血症不敏感。鼹鼠在热中性和缺氧条件下心率能够增加至 PO2 32 托。它能够在寒冷和缺氧（10℃；41托）下保持稳定的心率。白老鼠不能。与其他啮齿类动物相比，鼹鼠在缺氧情况下维持和增加心率的能力非常突出。
Heart rate of the fossorial mole rat at rest was compared with that of the white laboratory rat at normoxic, hypercapnic and hypoxic conditions in thermoneutrality and cold. Heart rate of the mole rat in thermoneutrality and normoxia was 142 .+-. SD/15 min. It was < 0.5 the heart rate of the white rat and .apprx. 0.4 the expected value for a normal mammal of its size. The heart rate was arrhythmic. Heart rate of the mole rate was insensitive to hypercapnica up to PCO2 = 36 torr. The mole rat was able to increase its heart rate in thermoneutrality and hypoxia down to PO2 of 32 torr. It was capable of maintaining a stable heart rate in cold and hypoxia (10.degree. C; 41 torr). The white rat could not. The mole rat was prominent compared with other rodents in its ability to maintain and increase heart rate in hypoxia.