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用50只鸽观察利尿酸(EA)或苦毒毛旋花子苷(ouabain)、缺氧和高K~+Ringer液灌注对蜗内直流电位D(DC电位)的影响。应用与双通道电位计相连的装满160mmol/L KCl溶液的微电极测定直流电位。左耳手术,外半规管壶腹的椭圆囊侧钻一小孔插入电极,于鼓阶隐窝钻一小孔,在需要摘除蜗管时插入小钩针,在测量处附近再钻一小孔将利尿酸或ouabain注入外淋巴间隙(右耳作对照)。结果表明摘除蜗管产生的壶腹部DC电位与对照组无明显差异;缺氧试验时,EA产生最大负DC电位有降低,而ouabain中毒耳几乎没有类似现象;不同浓度K~+,使EA或ouabain
Fifty pigeons were used to observe the effects of uric acid (EA) or ouabain, hypoxic and high K + Ringer solution on DC in DC. The DC potential was measured using a microelectrode filled with 160 mmol / L KCl solution connected to a two-channel potentiometer. Left ear surgery, the outer semicircular canal Ampulla oblongata drilling a small hole into the electrode side of the drum recess recess drilling a small hole, need to be removed when the cochlear small crochet, drilled a hole in the vicinity of the measurement will benefit Uric acid or ouabain was injected into the perilymph space (right ear as control). The results showed that there was no significant difference between ampulla DC potentials produced by excision of scrotum and control group. In hypoxia test, the maximum negative DC potential of EA was decreased, while ouabain poisoned ear had almost no similar phenomenon. Different concentrations of K + ouabain