Pop T, Fleischmann D
Z Kardiol. 1977 Mar;66(3):142-5.
40 patients were examined with the extrastimulus method at 3 different driving rates (80, 100 and 120/min). It was found that the atrial conduction velocity during the relative refractory period sometimes explains a paradoxical conduction of a premature atrial beat. The AV-node conduction is mainly determined by the correlation between the functional refractory period of the right atrium (FRPRA) and the effective retractory period of the AV-node (ERPAVN). With increasing driving rate the FRPRA shortened while ERPAVN lengthened. This explains why in this study the number of patients in which the ERPAVN could be reached progressively increased from 23 at a driving rate of 80/min to 31 and 33, respectively, at the driving rates of 100 and 120/min.
采用额外刺激法对40例患者在3种不同驱动频率（80、100和120次/分钟）下进行检查。发现相对不应期的心房传导速度有时可解释房性早搏的矛盾传导。房室结传导主要由右心房功能不应期（FRPRA）与房室结有效不应期（ERPAVN）之间的相关性决定。随着驱动频率增加，FRPRA缩短而ERPAVN延长。这就解释了为何在本研究中，能够达到ERPAVN的患者数量从驱动频率80次/分钟时的23例，分别逐渐增加至驱动频率100次/分钟和120次/分钟时的31例和33例。
