A full term female infant was born after 41 weeks of gestation. with a birth weight of 3815g and normal Apgar scores (9-10-10). Immediately after birth tachycardia was noted. An electrocardiogram (ECG) showed a heart rate of 300 beats per minute (bpm) and narrow QRS complexes. https://danddcollectiblers.shop/product-category/toddler/