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不完全性房间束阻滞心电图表现为 P 波增宽超过0.11秒,呈双峰,两峰间距大于0.04秒。单凭心电图难与心房肥大区别。但这种图形若间歇出现,则强烈提示不完全性房间束阻滞。病例男,78岁,时感心慌,血压110/70mmHg,心律齐,心音低钝。B 超探查见两侧房室腔均扩大。心电图示窦性心律,电轴+30度,P-P 及 R-R间期匀齐,周期约0.85秒,P-R 间期0.18秒,固定,见附图。图上条为Ⅱ导联描记,见连续出现的双峰 P 波同插一个单峰 P 波。双峰 P 波时限为0.15秒,前峰高于后峰,两峰间距0.06秒,固定不变;单峰 P 波时限为0.07秒。图中条为 V_1导联描记,见一连串正负双向 P 波间插一个正向 P 波。双向 P 波的 Ptf=-0.06mms.QRS 综合波均为室上型,时
Incomplete room bundle blockade ECG showed P wave broadening more than 0.11 seconds, a bimodal, two peaks spaced greater than 0.04 seconds. ECG difference alone and atrial hypertrophy difference. However, if this pattern appears intermittently, it is strongly suggested that incomplete room bundle block. Male, 78 years old, feeling flustered, blood pressure 110 / 70mmHg, heart rate Qi, heart sound low blunt. B ultrasound probe to see both sides of the atrioventricular cavity are expanded. Electrocardiogram shows sinus rhythm, electrical axis +30 degrees, P-P and R-R interval homogeneous, period of about 0.85 seconds, P-R interval of 0.18 seconds, fixed, see the attached figure. The upper part of the figure for the lead description Ⅱ, see the continuous emergence of double-peaked P wave with a single peak P wave. Bimodal P wave duration of 0.15 seconds, before the peak is higher than the peak after the peak spacing of 0.06 seconds, unchanged; unimodal P wave time limit of 0.07 seconds. Figure V_1 leads for the stripe description, see a series of positive and negative bidirectional P wave interpolation between a positive P wave. Bidirectional P wave Ptf = -0.06mms.QRS complex waves are supratentorial, when