👉 Atresia is a medical condition in which the heart muscle becomes weak and inflamed, leading to reduced blood flow. It can cause symptoms such as fatigue, shortness of breath, palpitations (stiffness) or chest pain. This condition is usually diagnosed by a doctor who examines the patient's symptoms closely and may order tests such as echocardiography or electrocardiogram to evaluate the heart muscle's health. Treatment options depend on the cause of atresia, such as