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无症状性室性早搏的昼夜规律及临床意义 被引量:1

Day and night regularity of ventricular premature contraction without underlying organic heart diseases and its clinical significance
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摘要 目的 :探讨小儿无症状性室性早搏 (VPC)的昼夜变化规律与自主神经功能状态的关系及其临床意义。方法 :对30例无症状性VPC患儿进行 2 4小时动态心电图 (DCG)监测 ,自主神经功能及心室晚电位检查。结果 :13/30例 (4 3 % )为日间型VPC ,10 /30 (30 % )为夜间型VPC。 13例日间型中 ,12例属交感性VPC ,10例夜间型均属迷走性VPC。日间型VPC频率与心率呈正相关 (r =0 .6 7,P <0 .0 5 ) ,夜间型VPC频率与心率呈负相关 (r =- 0 .6 9,P <0 .0 5 ) ,本组 2 0例做心室晚电位检查均正常 ,未发现器质性心脏病。结论 :无症状性VPC日间型可能是交感神经张力增高所致 ;而夜间型与迷走神经张力增高有关 。 Objective:To investigate the relationship between day and night regularity of asymptomatic ventricular premature contraction (VPC) and the activity of autonomic nervous system and its clinical significance. Methods: Thirty children with the absence of underlying organic heart disease were examined with 24 hour dynamic electrocardiogram (DCG),the function of autonomic nervous system and ventricular late potentials (VLP).Results:The rate (43% ,13/30) was the day type VPC ,12 out of the 13 resulted from increased activity of sympathetic nerve .The rate (30%,10/30) was the night type VPC ,all of them resulted from the activity of the vagus nerve enhanced. There was a positive correlation between VPC frequency of day type and heart rate (r=0.67, P<0.05) and a negative correlation between VPC frequency of night type and heart rate (r=-0.69,P<0.05). 20 out of the 30 cases were examined by VLP. All of them were normal. Conclusion:Asymptomatic VPC of day type possibly resulted from increased activity of sympathetic nerve. However ,asymptomatic VPC of night type could be related to the activity of the vagus nerve enhanced. The type asymptomatic VPC usually had a good prognosis.
出处 《重庆医科大学学报》 CAS CSCD 2000年第2期171-173,共3页 Journal of Chongqing Medical University
关键词 室性早搏 动态心电图 昼夜规律 儿童 Ventricular premature contraction Dynamic electrocardiogram Day and right regularity
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