Intramuscular Injection of Mesenchymal Stem Cell for Treatment of Children With Idiopathic Dilated Cardiomyopathy

Inclusion Criteria: * Children of both genders with established clinical and echocardiographic diagnosis of dilated cardiomyopathy whose parents accept to participate in the trail. * They should have symptoms and /or signs of heart failure, despite optimized medical treatment. * Ejection fraction of left ventricular should be less than 50%, but more than 20%. Exclusion Criteria: * associate coronary artery disease. * any history or suspicion of a toxic , pharmacologic or deposit etiology. * associated malignant or pre -malignant systemic disease. * associated hematologic disorder. * a history of sustained ventricular tachycardia or fibrillation. * a history of syncope during the previous year, or with an active infectious disease or positive tests to viral disease.