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我们应用经食道心房调搏法测定了103名正常学龄期儿童的窦房结恢复时间(SNRT)及窦房传导时间(SACT),其正常值范围分别为:SNRT910.78±132.65ms、CSNRT 255.89±75.43ms、SACT_I120.34±46.00ms、SACT_(?)92.60±26.65ms,正常值高限分别为:SNRT<1150ms、CSNRT<400ms、SACT_I<200ms、SACT_(?)<140ms。调搏频率及时间对SNRT无明显影响。SCL与Max SNRT呈明显直线相关(γ=0.84)。认为以CSNRT、SACT_(?)作为判断窦房结功能的指标较为适宜。同时探讨了儿童SNRT的测定方法。
We used the transesophageal atrial pacing method to measure the sinus node recovery time (SNRT) and the sinoatrial conduction time (SACT) in 103 normal school-aged children. The normal ranges were SNRT910.78 ± 132.65ms and CSNRT255.89 ± 75.43ms, SACT_I120.34 ± 46.00ms, SACT_ (?) 92.60 ± 26.65ms, respectively. The normal high values are SNRT <1150ms, CSNRT <400ms, SACT_I <200ms and SACT_ (?) <140ms respectively. Pacing frequency and time have no significant effect on SNRT. There was a significant linear correlation between SCL and Max SNRT (γ = 0.84). That the CSNRT, SACT_ (?) As indicators to determine the function of the sinus node is more appropriate. The method of measuring SNRT in children was also discussed.