A mother brings her 5-year-old boy to see you as a General Physician. On examination, he has red eyes, dry, cracked lips and a rash on his hands and feet. He also has cervical lymphadenopathy. What is the most impoant investigation to rule out a serious complication of this condition?

Kawasaki disease (Mucocutaneous Lymph node Syndrome) Risk to develop coronary aery vasculitis Risk of MI due to presence of aneurysms in coronary aery. So echocardiography is useful Complications of persistent coronary aery aneurysms include rupture, thrombosis and recanalization, and stenosis at the outflow area. Complication like Myocardial ischaemia and pericarditis can be diagnosed with E.C.G Rx= Aspirin +IV Ig