Effects of sodium and temperature on tension in isolated canine coronary artery |
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| Authors: | Katsuhiko Yoshida Yuhsuke Fujii Hiroshi Ina Susumu Fujioka Takashi Maseki Toshio Abe Hiroyuki Tokuno Tadao Tomita |
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| Institution: | (1) Department of Cardiovascular Surgery, Kiryu Kousei General Hospital, Kiryu, Japan;(2) Department of Thoracic Surgery, Nagoya University, Nagoya, Japan;(3) Department of Physiology, School of Medicine, Nagoya University, Nagoya, Japan;(4) Department of Cardiovascular Surgery, Kiryu Kousei General Hospital, 6-3, Orihime-cho, Kiryu, 376, Japan |
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| Abstract: | 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°C, the tension was significantly increased at 70mEq·l
–1 Na and below. The tension was gradually suppressed by lowering of the temperature from 37°C to 10°C. At 10°C, tension did not developed significantly at Na concentrations between 127mEq·l
–1 and 12mEq·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.(Yoshida K, Fujii Y, Ina H, et al.: Effects of sodium and temperature on tension in isolated canine coronary artery. J Anesth 5: 56–59, 1991) |
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| Keywords: | Coronary artery Sodium Hypothermia Tension |
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