qrs interval造句
造句与例句
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- In theory a pacemaker like this will shorten the QRS interval, thus bringing the timing of contraction of the left and right ventricles closer together and slightly increasing the ejection fraction.
- These direct cardiac effects include decreased heart rate ( i . e . cardiovascular depression ), decreased contractility, and decreased electrical conductivity ( i . e ., increased PR, AH, HV, and QRS intervals ).
- It's difficult to see qrs interval in a sentence. 用qrs interval造句挺难的
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