Objective To analyse the effects of rapid atrial pacing on P wave duration and dispersion.

目的分析快速心房刺激对P波时限及离散度的影响。

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Methods: We measured the maximum P-wave duration and P-dispersion from the 12-lead surface electrocardiogram of 40 patients with IPAF and 40 age-matched healthy control subjects.

方法：对确诊IPAF病例和年龄匹配的健康人各40例，测量体表心电图12导联最大P波时限及P波离散度。

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The surface body electrocardiogram(ECG) manifestations of biatrial pacing are that P wave duration shortens, the polarity of P wave changes to negative, PR interval gets shorter correspondingly.

双房同步起搏体表心电图表现为P波时限短、负向或正负双向，PR间期相应缩短。

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The duration of the technology wave for real-time analytics may well be infinite in this case, but likely not restricted to one company as with computing speed seems to be commoditized quickly these days.

FORBES: How Disruptive is SAP HANA?

While I think you probably lost most readers with kondratieff wave- I had to revisit myself to recall duration, the relationship between technology and culture is very interesting.

FORBES: How Disruptive is SAP HANA?