Abstract：
The typical ECG changes in tetralogy of Fallot are right axis deviation, large R waves in the anterior precordial leads and large S waves in the lateral precordial leads. We present a patient with extreme deviation of the frontal QRS axis between -90° and ± 180°. The child underwent open heart surgery twice before one year of age and a third time at nine years of age. The axis change persisted into adulthood.
摘要：
法洛四联症的典型心电图变化是右轴偏差，心前导联中的大R波和心前导联中的大S波。我们为患者提供了额叶QRS轴在-90°至±180°之间的极端偏差。这个孩子在一岁前接受了两次心脏直视手术，在九岁时接受了第三次心脏直视手术。轴的变化持续到成年。
