ATRIOVENTRICULAR WENCKEBACH PERIODICITY IN ATHLETES - INFLUENCE OF INCREASED VAGAL TONE ON THE OCCURRENCE OF ATYPICAL PERIODS
ATRIOVENTRICULAR WENCKEBACH PERIODICITY IN ATHLETES - INFLUENCE OF INCREASED VAGAL TONE ON THE OCCURRENCE OF ATYPICAL PERIODS
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DOI：
10.1016/s0022-0736(87)80026-2
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发表时间：
1987-07-01
影响因子：
1.3
通讯作者：
KONISHI, G
中科院分区：
文献类型：
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作者：
KINOSHITA, S;KONISHI, G
对37名房室文氏周期运动员进行了PP与RR间期关系的研究。在大多数运动员中，当PP间期逐渐延长时，RR和PR间期通常也逐渐延长，直到发生阻滞的P波，导致出现非典型文氏期，最后一个RR间期延长（变体I）。在20名运动员，突然显着延长PR间期偶尔发生，这通常是由一个封闭的P波（变种II）。在5名运动员中，一旦发生PR间期突然显著延长，PR间期明显延长并维持一段时间，然后PR间期突然缩短而无P波阻滞（变体III）。上述发现似乎是由迷走神经张力的自发性变化引起的。有人建议，纵向分离和隐匿性折返房室结发生在非典型文氏周期的变体II和III，但不是在其他时期。
In 37 athletes with atrioventricular (AV) Wenckebach periodicity, the relationship between PP and RR intervals was investigated. In most athletes, when PP intervals gradually lengthened, RR as well as PR intervals usually also gradually lengthened until a blocked P wave occurred, resulting in the occurrence of an atypical Wenckebach period with prolongation of the last RR interval (variant I). In 20 athletes, sudden marked prolongation of a PR interval occasionally occurred, which was usually followed by a blocked P wave (variant II). In five athletes, once sudden marked prolongation of a PR interval occurred, markedly long PR intervals were maintained for some time, and then a PR interval suddenly shortened without a blocked P wave (variant III). It appeared that the above findings were caused by spontaneous variations in vagal tone. It was suggested that longitudinal dissociation and concealed reentry in the AV node occurred in atypical Wenckebach periods of variants II and III, but not in the other periods.