钠和温度对离体犬冠状动脉张力的影响。
Effects of sodium and temperature on tension in isolated canine coronary artery.
作者信息
Yoshida K, Fujii Y, Ina H, Fujioka S, Maseki T, Abe T, Tokuno H, Tomita T
机构信息
Department of Cardiovascular Surgery, Kiryu Kousei General Hospital, Kiryu, Japan.
出版信息
J Anesth. 1991 Jan;5(1):56-9. doi: 10.1007/s0054010050056.
The effects of sodium and temperature on tension of isolated canine coronary arterial strips were studied. In 20 mEq. l(-1) K solution, the strength of tension was inversely related to the Na concentration. At 37 degrees C, the tension was significantly increased at 70 mEq. l(-1) Na and below. The tension was gradually suppressed by lowering of the temperature from 37 degrees C to 10 degrees C. At 10 degrees C, tension did not developed significantly at Na concentrations between 127 mEq. l(-1) and 12 mEq. l(-1). It was concluded that the decrease in Na concentrations increased the tension of the canine coronary artery and the lowering of temperature supressed the tension inducted by the decrease in Na concentrations.
研究了钠和温度对离体犬冠状动脉条张力的影响。在20 mEq·l⁻¹钾溶液中，张力强度与钠浓度呈负相关。在37℃时，钠浓度为70 mEq·l⁻¹及以下时张力显著增加。温度从37℃降至10℃时，张力逐渐受到抑制。在10℃时，钠浓度在127 mEq·l⁻¹至12 mEq·l⁻¹之间时张力无显著变化。得出的结论是，钠浓度降低会增加犬冠状动脉的张力，而温度降低会抑制因钠浓度降低而引起的张力。
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