Most lower extremity muscles had the strongest effect on frontal axis, sagittal axis takes the second place, the third is vertical axis.
下肢大多数肌肉对额状轴作用最大，矢状轴次之，垂直轴最小。
Conclusion QRS prolongation and frontal plane QRS axis deviation after contrast medium injection may be a marker of myocardial ischemia.
结论注射造影剂后QRS时间延长及QRS额面电轴的变化可能是急性心肌缺血的标志。
Methods QRS duration and frontal plane QRS axis were measured before and after injection of contrast medium in 34 patients with left coronary artery disease identified by coronary angiography.
方法观察34例经冠状动脉造影确诊为左冠状动脉狭窄而右冠状动脉无病变的冠心病患者，注射造影剂前后QRS时间和额面电轴的变化。
Objective To investigate the age trend of the frontal QRS axis in a normal population and its effect on QRS-wave amplitude in the limb leads.
目的调查和评估正常人额面QRS电轴的年龄趋势以及对肢体导联QRS波振幅的影响。
Chongqing Medical University, Chongqing Objective To investigate effects of contrast medium injection on QRS duration and frontal plane QRS axis during coronary angiography.
目的探讨冠心病患者冠状动脉造影剂注射对心电图QRS时间及QRS额面电轴的影响。
Conclusions:The frontal flaps should be designed along the axis of supratrochelear vessels, so the whole nasal defect can be repaired by bilateral frontal flaps simultaneously;
结论：额部皮瓣应设计在旁正中的滑车上动脉血管走行轴线上； 可同时用两侧额部皮瓣行全鼻缺损的修复；
Conclusions:The frontal flaps should be designed along the axis of supratrochelear vessels, so the whole nasal defect can be repaired by bilateral frontal flaps simultaneously;
结论：额部皮瓣应设计在旁正中的滑车上动脉血管走行轴线上； 可同时用两侧额部皮瓣行全鼻缺损的修复；
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