Double inlet left ventricle

Overview of Double Inlet Left Ventricle (DILV)

Double Inlet Left Ventricle (DILV) is a rare congenital heart defect characterized by both atria connecting to a single ventricle, typically the left ventricle. This condition is a type of single ventricle defect, which affects the normal flow of blood through the heart.

Anatomy and Physiology

In a normal heart, the right atrium and left atrium are connected to the right and left ventricles, respectively. However, in DILV, both atria are connected to the left ventricle. The right ventricle is often underdeveloped or hypoplastic. This abnormality leads to a mixing of oxygenated and deoxygenated blood, which can result in cyanosis and other complications.

Pathophysiology

The mixing of blood in the left ventricle causes the body to receive less oxygenated blood, leading to symptoms such as cyanosis, fatigue, and shortness of breath. Over time, this can lead to complications such as heart failure and pulmonary hypertension.

Diagnosis

DILV is typically diagnosed using echocardiography, which allows visualization of the heart's structure and function. Other diagnostic tools may include MRI and cardiac catheterization.

Treatment

Treatment for DILV often involves surgical intervention. The Fontan procedure is a common surgical approach used to redirect blood flow and improve oxygenation. Other procedures may include the Glenn procedure or Norwood procedure, depending on the specific anatomy and needs of the patient.

Prognosis

The prognosis for individuals with DILV varies depending on the severity of the defect and the success of surgical interventions. With advances in surgical techniques, many individuals can lead relatively normal lives, although they may require ongoing medical care and monitoring.

Related pages

• Congenital heart defect
• Hypoplastic left heart syndrome
• Single ventricle defect
• Fontan procedure