Right-to-Left Cardiac Shunt

A right-to-left cardiac shunt is an abnormal passage of blood within the heart or the great vessels in which poorly oxygenated blood crosses to the left side without first passing through the lungs. It is usually related to congenital heart defects.

Why it matters: as blood low in oxygen mixes into the general circulation, a bluish coloring of the lips and skin, fatigue, or shortness of breath with exertion may appear.

When to see a doctor? With bluish coloring, unusual tiredness while feeding or playing in children, or difficulty breathing, an evaluation without delay is advisable.

Which specialist treats it? The cardiologist and, in children, the pediatric cardiologist study the condition; the cardiovascular and thoracic surgeon operates when correction is required. Resolving these questions with these professionals allows you to understand each case with the clarity needed.