Q-T间期是反映心室肌除极和复极的全过程,其长短的变化,受许多因素影响,系生理变化抑或病理改变,往往难以肯定。因此,在临床应用上受到一定限制。近年来,注意观察和分析Q-Tc及J-Tc的变化,并用于临床,J-Tc由于排除了心室肌除极时限的影响,较好地反映心室肌的复极时限的改变。国内外逐渐重视Q-T间期变异的临床意义。一、植(?)神经的影响据动物实验,将狗开胸暴露星状神经节,予以左侧电刺激(切断)或切断右侧神 Q-T interval reflects the whole process of ventricular depolarization and repolarization, the length of the change, affected by many factors, the Department of physiological changes or pathological changes are often difficult to be sure. Therefore, there are some limitations in clinical application. In recent years, pay attention to observe and analyze the changes of Q-Tc and J-Tc, and for clinical use, J-Tc ventricular remodeling due to the exclusion of the time limit to better reflect the changes in ventricular repolarization time limit. At home and abroad gradually pay attention to the clinical significance of Q-T interval variation. First, the implants (?) Nerve effect According to animal experiments, the stella exposed to stellate ganglion, left electrical stimulation (cut off) or cut off the right side of God