3-4 months baby with hea rate 250/min, QRS complex less than 0.07 sec and no P wave, Diagnosis will be: (A) SVT, (B) Sinus tachycardia, (C) PSVT with block, (D) VT
Answer is A. SVTs are the most common symptomatic arrhythmias in all children including neonates.SVTs usually haveRate > 200 beats/minuteNormal or narrow (<0.07 sec, A wide QRS > 0.07 sec ours the diagnosis of ventricular tachycardia).Ventricular complexes on the surface ECG.