Tricuspid Atresia

Below you will find more information about Tricuspid Atresia from Medigest. If you believe that you are suffering from any of the symptoms of Tricuspid Atresia it is important that you obtain an accurate diagnosis from a medical professional to ensure that you obtain the correct medication or treatment for your condition. There are medical conditions that carry similar symptoms associated with Tricuspid Atresia and therefore the information provided by Medigest is offered as a guideline only and should never be used in preference to seeking professional medical advice. The information relating to Tricuspid Atresia comes from a third party source and Medigest will not be held liable for any inaccuracies relating to the information shown.


A form of congenital heart disease, Tricuspid atresia is the complete absence of the tricuspid valve, causing the absence of right atrioventricular connection. This disorder is contracted during prenatal development, when the heart does not finish developing.


The condition may be discovered during a prenatal ultrasound imaging, or when the baby undergoes examination right after birth. Cyanosis may already be present at birth and a heart murmur is usually present. Some of the tests include ECG, Echocardiogram, chest x-ray, and cardiac catheterization.


Babies with the disorder are immediately admitted to the neonatal intensive care unit (NICU) where a breathing machine (ventilator) may be used. Prostaglandin E1 is then used to maintain blood circulation in the body.

Symptoms and Signs

During the first 2 weeks of life, tachypnea may be experienced by the infant as well as poor feeding, progressive cyanosis, holosystolic murmur, superior axis and left ventricular hypertrophy. The heart size is normal though.


As above-mentioned, the disease is caused by a missing or broken tricuspid valve. Therefore, there is no outlet for blood flow from the right ventricle to the right atrium, making the blood unable to enter the lungs where it is supposed to be oxygenated.

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