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本图有下列特点:1.除第2行Ⅱ导联外,夹有QRS波的P-P间期(即P-QRS-P)和不夹有QRS的P-P间期分别约为0.64和0.68秒,2.第2行位于ST段的P波明显提前,其形态与窦性P波不同,振幅较低,且有代偿间歇,考虑为房性早搏;3.全图P(P′)与QRS无固定关系,P-R间期不等,而R-R间期基本相等,心室率为42次/分,
The figure has the following characteristics: 1. Except for the lead in the second row, the PP interval with QRS wave (ie, P-QRS-P) and PP without intervening QRS are about 0.64 and 0.68 seconds respectively, 2. The second row of P wave in the ST segment significantly advanced, its shape and sinus P wave is different, the amplitude is lower, and compensatory intermittent, consider atrial premature beats; 3. The whole picture P (P ’) and QRS No fixed relationship, PR interval range, while the RR interval is basically equal, ventricular rate was 42 beats / min,