Atrium

Ventricular Septal Defect Atrium Ventricular Septal Defect (VSD) is a congenital heart defect in which there is an opening in the wall of the heart’s lower chambers, also known as the ventricles. This opening allows oxygen-rich and oxygen-poor blood to mix in the heart, causing the heart to work harder to pump enough blood to the body’s organs. VSDs can be small and cause few symptoms, or large and cause symptoms such as shortness of breath, fatigue, poor growth and increased risk for infection. Treatment for VSD depends on the size and severity of the defect, and may involve medications, lifestyle changes, and surgery. Early diagnosis and treatment of VSD are important to prevent long-term complications.