文献摘要信息 od pressure,SBP),舒张压(diastolic blood pressure,DBP)和心动间期(heart period,HP).记录给药前1 h内血压和心动间期作为给药前基础值.然后每组SHR经胃瘘管分别给予0.5的羧甲基纤维
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其余心率、QRS间期、Q-T间期的数值以及窦性心动过缓、窦性心动过速和心电轴左偏等发生率，两组之间均无差异（P＞0．05）。
No significant differences were found in the heart rate, QRS intervals, Q T intervals, sinus bradycardia, sinus tachycardia and left axis deviation between exposed and control groups ( P >0 05).
顺向型房室折返性心动过速时，出现两种不同的R-P-间期和P-波或房性融合波。
There were two kinds of R-P-period and P-wave or atrial fusion wave in anterior AVRT.
应用经食管超声心动图测量肺静脉血流频谱曲线收缩早期逆向R波峰值流速（PVR）和收缩期S波峰值流速（PVS） ，分析PVR和PVS与其前心电图R R间期的关系。
The peak velocities of the early systolic reversal wave (PVR) and the systolic forward wave (PVS) were measured. The relationships between the preceding R-R intervals and PVR, PVS were analyzed.
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