<prompt> Answer this question truthfullyWhat is the relationship between Kawasaki disease and an electrocardiogram?  <response>: <reason> Electrocardiogram in Kawasaki disease may demonstrate evidence of: Ventricular dysfunction Arrhythmia due to myocarditis In the acute phase, the electrocardiogram may demonstrate the following abnormalities consistent with myocarditis: Prolonged PR interval Nonspecific ST changes T-wave changes Increased QR ratio 