Overview:

• T wave: represents ventricular repolarization
• Normal T waves: asymmetric & generally in same direction as QRS
• T waves in right-precordial leads (V1-V2) differ in infants & adults

T waves in V1-V2:

• Term newborn infants: upright T waves
• 7-days-old: inverted T waves
• RVH: upright T waves <7 y/o
• 7-years-old: upright T waves
• Persistent juvenile T wave pattern: continued asymmetric T wave inversion >7 y/o only in V1-V3