Objective To investigate the clinical characteristics and ECG differential diagnosis of wide QRS complex tachycardia in children. Methods A total of 24 children with sudden tachycardia and the surface 12 lead ECG examination showed wide QRS complex tachycardia in our hospital from January 2017 to February 2020 were selected for comprehensive analysis of their clinical symptoms

signs and ECG characteristics. Results The differential diagnosis of wide QRS complex tachycardia in children requires a comprehensive judgment based on the clinical symptoms

underlying diseases and various signs of the child

the main cause of wide QRS tachycardia in children was intraventricular conduction disturbances caused by hyperkalemia

while ventricular arrhythmia accounts for a small proportion. If the diagnosis direction was correct and the treatment is timely

most of them have good prognosis. Conclusions The differential diagnosis of wide QRS tachycardia in children is different from that in adults. Improving the diagnostic coincidence rate is of guiding significance to the clinical treatment and prognosis of the disease.