Fisher J D
Pacing Clin Electrophysiol. 1985 Sep;8(5):671-7. doi: 10.1111/j.1540-8159.1985.tb05879.x.
Conventional electrophysiologic studies involve the insertion of several catheter electrodes, positioned to pace and record from the high right atrium, His bundle region, and the right ventricular apex. The present study was undertaken to determine whether similar information could be obtained during removal of temporary pacing leads previously inserted via the subclavian vein, without the need for further invasive studies. Attempts to record a His bundle potential were successful in 157 of 200 patients (79%). A His bundle potential could be recorded during low right atrial pacing on 24 of 58 attempts. The Wenckebach cycle length was compared during high and low right atrial pacing in 34 patients, and did not differ significantly. Ventricular stimulation from the right ventricular apex and right ventricular inflow tract could be performed for assessment of ventricular vulnerability. Similarly, high right atrial pacing for sinus node testing was readily accomplished. In conclusion, detailed electrophysiologic studies can be performed during termination of temporary pacing, in sufficient detail to provide results equivalent to those of a more formal study.
传统的电生理研究需要插入多个导管电极，放置在高位右心房、希氏束区域和右心室尖部进行起搏和记录。本研究旨在确定在拔除先前经锁骨下静脉插入的临时起搏导线期间，是否可以在无需进一步侵入性研究的情况下获得类似的信息。在200例患者中的157例（79%）成功记录到希氏束电位。在58次尝试中的24次低位右心房起搏期间成功记录到希氏束电位。在34例患者中比较了高位和低位右心房起搏时的文氏周期长度，差异无统计学意义。可从右心室尖部和右心室流入道进行心室刺激以评估心室易损性。同样，也可轻松完成用于窦房结测试的高位右心房起搏。总之，在拔除临时起搏导线期间可进行详细的电生理研究，其详细程度足以提供与更正式研究相当的结果。
