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患者男性,75岁,临床诊断病态窦房结综合征。附图为Ⅰ、Ⅱ、Ⅲ导联同步记录,P_1—P_(10)为窦性 P 波,频率100次/min,P-R 间期0.18s。P′_1—P′_9。为房性早搏,其中 P′_(1、2、3、5、9)呈阻滞性。P′_1期前间期(p-p′时间)0.40s,虽未能下传至心室,但顺向性隐匿性传导激动了房室交界区,使下一次窦性激动 P_2下传至房室交界区时遇此绝对不应期而不能下传,酷似Ⅱ°A-VB。P′_1在逆传时,在窦房交界区与窦性激动发生干扰,故未打乱窦性节律,此房早呈插入性。P′_2期前间期0.40s,也未能下传至心室,与P′_1不同的是逆传侵入窦房结内,并使窦房结提前激动,使窦性周期重建,出现不完全代偿间歇。P′_(3、5)期前
Male patient, 75 years old, clinically diagnosed as sick sinus syndrome. The figure for Ⅰ, Ⅱ, Ⅲ lead synchronization records, P_1-P_ (10) for the sinus P wave, the frequency of 100 beats / min, P-R interval of 0.18s. P’_1-P’_9. For atrial premature beats, P ’_ (1,2,3,5,9) was blocked. P’_1 pre-period (pp ’time) 0.40s, although not down to the ventricle, but the occult conduction of the humor atrioventricular junctional area, so that the next sinus rhythm P_2 transmitted to the atrioventricular junction When the district meet this absolutely refractory period and can not be downloaded, exactly like Ⅱ ° A-VB. P’_1 at the time of retrograde, sinus node junction with sinus disturbances, it did not disrupt sinus rhythm, this room had early insertion. P’_2 period of 0.40s before, but also failed to download to the ventricle, and P’_1 is different from the invasion of the sinus node invasion, and the early activation of the sinus node, the sinus cycle reconstruction, there is incomplete Intermittent compensation. P ’_ (3,5) ago