Tetralogy of fallot(patient information)

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Tetralogy of Fallot

Overview

What are the symptoms?

What are the causes?

Who is at highest risk?

When to seek urgent medical care?

Diagnosis

Treatment options

Where to find medical care for Tetralogy of Fallot?

What to expect (Outlook/Prognosis)?

Possible complications

Prevention

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editors-In-Chief: Priyamvada Singh, M.B.B.S. [2], Keri Shafer, M.D. [3]; Atif Mohammad, M.D.; Assistant Editor-In-Chief: Kristin Feeney, B.S. [4]

Overview[edit | edit source]

Tetralogy of Fallot refers to a type of congenital heart defect. Congenital means present at birth. Tetralogy of Fallot is classified as a cyanotic heart defect because the condition causes low oxygen levels in the blood. This leads to cyanosis (a bluish-purple color to the skin).

The classic form of tetralogy includes four related defects of the heart and its major blood vessels:

At birth, infants may not show signs of cyanosis. However, later they may develop sudden episodes (called Tet spells) of bluish skin from crying or feeding.

Tetralogy of Fallot is rare, but it is the most common form of cyanotic congenital heart disease. Patients with tetralogy of Fallot have a higher incidence of major non-heart congenital defects.

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What are the symptoms of Tetralogy of Fallot?[edit | edit source]

Patients with ventricular septal defects may not have symptoms. However, if the hole is large, the baby often has symptoms related to heart failure.

The most common symptoms include:

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What causes Tetralogy of Fallot?[edit | edit source]

The cause of most congenital heart defects is unknown. Many factors seem to be involved.

Factors that increase the risk for this condition during pregnancy include:

Possible Complications?[edit | edit source]

Exams and Tests[edit | edit source]

A physical examination with a stethoscope almost always reveals a heart murmur.

Tests may include:

Treatment options[edit | edit source]

Surgery to repair tetralogy of Fallot is done when the infant is very young. Sometimes more than one surgery is needed. When more than one surgery is used, the first surgery is done to help increase blood flow to the lungs.

Surgery to correct the problem may be done at a later time. Often only one corrective surgery is performed in the first few months of life. Corrective surgery is done to widen part of the narrowed pulmonary tract and close the ventricular septal defect.

Surgery for a VSD with no symptoms is controversial. This should be carefully discussed with your health care provider.

When to Contact a Medical Professional?[edit | edit source]

Most often, this condition is diagnosed during routine examination of an infant. Call your infant's health care provider if the baby seems to be having difficulty breathing, or if the baby seems to have an unusual number of respiratory infections.

Outlook (Prognosis)[edit | edit source]

Call your health care provider if new unexplained symptoms develop or the patient is having an episode of cyanosis (blue skin).

If a child with tetralogy of Fallot becomes blue, immediately place the child on his or her side or back and put the knees up to the chest. Calm the baby and seek medical attention immediately.

Prevention[edit | edit source]

There is no known prevention.

Sources[edit | edit source]

http://www.nlm.nih.gov/medlineplus/ency/article/001567.htm


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