患者,女,70岁,病历号035062,1985年3月11日因冠心病,脑动脉硬化症,病窦综合征入院。据心电图可见四种P波,1.窦性P波:有P_ 1.4—6.8—10.14—16.呈直立状,时间0.08s.P_14.5.8.14未能下传,并和交界性搏动发生绝对性干扰。下传之P—R0.16s,可测出窦性P—P 1.30—1.50s,为窦性心动过缓伴不齐。2.房性P’波:P_7.11—13属之,呈正负双向之外形,为起源于心房之异位P’波,P’—R0.15s,P’—P’较固定于1 .56s(38次/分),为房性逸搏心律。3.交界性P’波:R_1—7.10.16为交界性 Patients, female, 70 years old, medical record number 035062, March 11, 1985 due to coronary heart disease, cerebral arteriosclerosis, sick sinus syndrome admission. According to the electrocardiogram can be seen four kinds of P wave, 1. sinus P wave: P 1.4-6.8-10.14-16 was erect, time 0.08s.P_14.5.8.14 failed to descend, and with borderline beats absolute Sexual interference. Download P-R0.16s, can be measured sinus P-P 1.30-1.50s, sinus bradycardia with missing. 2. Atrial P ’wave: P_7.11-13 belongs to the positive and negative two-way shape, originating from the atrium of the ectopic P’ wave, P’-R0.15s, P’-P ’is fixed at 1 .56s (38 beats / min), atrial escape rhythm. 3. Boundary P ’wave: R_1-7.10.16 is borderline