RESULTS astemizole could slower the heart rate of mice, prolong P-R and Q-T interphase, even arise the complete AV block and sinus beat stop with the dose increase.

结果阿司咪唑使多数小鼠心率减慢，P R间期和Q T间期延长，随剂量增加，甚至可引起完全性房室传导阻滞和窦性停搏。

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Objective To study structure of the unstable periodic orbits (UPOs) of R-R interval signals of heart during orthostatic standing, and to reveal the dynamic characters of heart rate variability (HRV).

目的研究立位心脏R- R间期信号的非稳定周期轨道的结构，进一步探讨心率变异（HRV）的动力学特征。

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The variation of R wave amplitude has little relation with cardiac output, heart pumping function, especially with pulmonary wedge pressure.

波振幅的改变与心输出量及心脏的泵血功能，尤其是肺动脉楔压之间无明显关系。

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Barrie James, from Torquay, who has had two heart attacks, was charged by G24, a private parking company that runs the Toys R Us car park in Plymouth.

BBC: Toys R Us parking firm G24 cancels heart patient's charge

Jack's mother drew a message on the car's dusty windshield that read: "Kyndall we r looking wont stop love you mom, " and signed it with a heart.

NPR: 1 Calif. Hiker Still Lost, 1 Found And Recovering

R. responded to these setbacks with his infamous court-packing plan, but a change of heart by Justice Owen J.

NEWYORKER: Partners