The most common ECG finding of an acute pulmonary embolism is sinus tachycardia; however, the classic finding is an S wave in lead I, Q wave in lead III and inverted T waves in lead III (S1Q3T3 ...

ECG: T-wave inversion and LV hypertrophy are variable based on location and pattern of hypertrophy: LVH: ... atrial fibrillation and malignant arrhythmias in HCM. Morphologic assessment.