食道心房调搏测定小儿窦房结及房室传导系统功能的研究

Studies of Determination of Sinus Node and A-V Conduction Systen Function in Children by Transesophageal Atrial Pacing

用食道心房调搏法测定50例正常小儿窦房结功能,包括SNRT、CSNRT、SNRTI、SACT、IHR及植物神经张力等。房室传导系统(AVCS)功能测定文氏点及2:1阻滞点。每例都进行植物神经双重阻滞前后对比研究。探讨二项功能的正常值。

The study group consisted of 50 normal children. The determination of Sinus node func- tions included SNRT, CSNRT, SNRTI, SACT, IHR and autonomic nervous system tone. The A-V conduction system function was evaluated by measurement of wenckeback point and 2:1 point of A-V conduction system. Each parameter was determined before and after com- bined autonomic blockade. Before combined blockade, the Wenckeback point and 2:1 point appeared at the HR of 175-220 bpm were 90% of the cases and 98% of the cases respectively, after combined block- ade, they were 98% of the cases and 100% of the cases respectively. It also showed the domi- nant vagus had effect on A-V node.