The body surface sinusnodeelectrogram (SNEb) was recorded in 116 young healthy students by using programme double time constant amplifier.
采用程控双时值放大器非叠加实时检测法，检测116例健康大学生的体表窦房结电图。
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This study reports the results of sinusnodeelectrogram (SNE) by electrode catheterization and directly measured sinoatrial conduction lime (SACT_D) in 48 patients.