10yr old boy who presented with mild wheeze and shortness of breath. Vitals signs: BP 105/60 RR 20 T 36.4 Sats 99%. Describe and interpret this ECG. LITFL Top 100 ECG
SVTs are supraventricular tachycardias, that can be either atrial tachydysrhythmias (such as atrial fibrillation) or atrioventricular tachydysrhythmias. This document concerns the latter.