Tanaka T, Seki A, Fujii J
Jpn Heart J. 1978 Sep;19(5):712-8. doi: 10.1536/ihj.19.712.
The effect of amyl nitrite (AN) on the vectorcardiographic T loop was studied in 17 cases who had negative T waves in the left chest leads of ECG. Thirty sec after AN inhalation the maximum T vector was displaced to the left and anteriorly in 15 and to the left and posteriorly in 2 cases. The magnitude of maximum spatial T vector was decreased and the spatial T loop became more circular. Changes in the amplitude of T loop projected to the scalar lead X were closely related with changes in the heart rate which would represent the sympathetic tone.
对17例心电图左胸导联T波倒置的患者，研究了亚硝酸异戊酯（AN）对心电向量图T环的影响。吸入AN后30秒，15例患者的最大T向量向左前方移位，2例向左后方移位。最大空间T向量的幅度减小，空间T环变得更圆。投影到标量导联X上的T环振幅变化与代表交感神经张力的心率变化密切相关。
