Total Anomalous Pulmonary Venous Return (TAPVR)
Total anomalous pulmonary venous return (TAPVR) is a congenital heart
defect. This means that your child is born with it. It happens as the baby’s heart
develops during the first 8 weeks of pregnancy.
In this condition, the 4 blood
vessels (pulmonary veins) that carry oxygen-rich (red) blood to the heart from the
aren’t connected correctly. Normally these blood vessels should be connected to left
upper chamber (atrium) of the heart. Instead, they’re connected somewhere else.
There are different types of TAPVR. The type your child has depends on where the pulmonary
veins are connected.
This condition causes oxygen-rich
blood from the lungs to mix with oxygen-poor (blue) blood from the body. This keeps
oxygen-rich blood from being carried all over the body. Your child can't live with
long-term. They need oxygen-rich blood all over the body.
Other heart defects often occur with TAPVR. They actually help infants have enough oxygen in
their blood until they can have surgery. These other defects include:
Atrial septal defect. In this condition, an opening is
between the 2 upper chambers of the heart (atrial septum). This causes oxygen-poor
and oxygen-rich blood to be mixed.
The ductus arteriosus is a blood vessel that carries blood
away from the heart in a developing baby. It often closes soon after birth. If it
stays open, it’s called a PDA. Sometimes it stays open with TAPVR. This causes
oxygen-poor and oxygen-rich blood to be mixed.
Single ventricle. In this condition,
there is only 1 ventricle instead of the normal 2.
Most of the time, the cause of TAPVR isn’t known. It may occur with other heart or
body system problems.
The symptoms of TAPVR may seem like
symptoms of other health conditions. Your child’s healthcare provider must diagnose
with this condition.
Newborns with TAPVR will have blue
coloring of their skin, lips, and nailbeds (cyanosis). This happens in the first hours
or days of their life. How severe your child’s condition is depends on how much blood
able to get to their body.
Other symptoms can be a bit
different for each child. They can include:
- Fast or troubled breathing
- Fast heart rate
- Cool, clammy skin
- Tiredness and little movement
- Poor feeding
- Poor pulses
- Enlarged liver
- Heart murmur
A healthcare provider may first
spot TAPVR in a baby during an ultrasound in pregnancy. After birth, if your child
signs of TAPVR, a pediatric cardiologist or neonatologist will check them. A pediatric
cardiologist is a doctor with special training to diagnose and treat heart problems
babies and children. A neonatologist is a doctor with special training to diagnose
treat problems in newborns. These include babies born premature and full-term.
Next, your child’s healthcare
provider may do tests to check for heart problems. The tests your child needs depend
their age and condition. They also depend on the provider’s preferences.
A chest X-ray may show changes in the heart and lungs caused by TAPVR.
An ECG records the electrical
activity of the heart. It also shows abnormal rhythms (arrhythmias) and finds heart
muscle stress. These problems may be caused by TAPVR.
This test uses sound waves
to make a moving picture of the heart and heart valves. An echo can show the
structural changes of TAPVR and abnormal connections of the pulmonary veins.
A cardiac catheterization gives
detailed information about the structures in the heart. In this test, a small, thin,
flexible tube (catheter) is put into a blood vessel in your child’s groin. Then the
healthcare provider guides it to your child’s heart. There, they will inject your
child with contrast dye to see the heart more clearly. Your child’s provider will
give them medicine to help relax and prevent pain (sedation). Your child’s blood
pressure and oxygen levels will be checked during the procedure. Your child may not
need this test if a diagnosis is made during the echo.
CT and magnetic resonance angiography (MRA)
A CT and MRA can show detailed
information about the pathways and connections of the pulmonary veins.
Treatment will depend on your child’s symptoms, age, and overall health. It will also
depend on how severe the condition is.
All children with a TAPVR will need
to have surgery to fix it. Your baby may need to go into the intensive care unit (ICU)
At first, your baby may get the following care:
- Supplemental oxygen or a machine
that helps your baby breathe (ventilator).
- Prostaglandin therapy. This
medicine keeps the ductus arteriosus open and lets blood flow through the heart.
This medicine isn’t used in all types of TAPVR.
- Different medicine to support the
function of the heart.
- ECMO (extracorporeal membrane
oxygenation). This method gives both cardiac and respiratory support for babies
who can't maintain oxygen levels on a ventilator.
This procedure can be used to
diagnose and treat some heart defects. To treat TAPVR, your child’s healthcare
provider may do a test called a balloon atrial septostomy. This test makes it easier
for oxygen-rich blood to get to the left side of the heart and then the rest of the
The surgery is done through a
cut (incision) through the breastbone (sternum) and into the chest. Your baby will
connected to a heart-lung machine during surgery. This device does the work of your
baby's heart and lungs during surgery. The details of the surgery depend on the type
of TAPVR your baby has. Your child’s healthcare provider will explain the procedure
to you. Some babies with severe forms of TAPVR may need surgery shortly after birth.
The complications of TAPVR include:
- Enlarged heart
- Lung problems, including respiratory failure and high blood pressure in the lungs
- Abnormal heart rhythms
- Heart failure
- Slowed growth and development
- Enlarged liver
- Need for another surgery
Your child will likely stay in the
hospital until TAPVR is repaired. Your child’s healthcare team will give you directions
about special treatments or medicines your child needs before your child leaves the
hospital. For instance, your child may need special formula and supplemental feedings
help with their growth. Your child’s healthcare team will also help you plan for home
healthcare if you need it.
Many children with TAPVR will grow
and develop normally after they have surgery. Talk with your child's cardiologist
how much and what kinds of physical activity your child can safely do. Your child
still need to see a heart doctor for regular checkups for the rest of their life.
child’s follow-up care should be at a center that specializes in congenital heart
defects. Ask your child's healthcare provider about your child’s outlook.
Your child may also need the following care:
- As children grow, they may need more
surgeries and cardiac catheterizations.
- Your child's heart doctor may give
your child antibiotics before surgeries or dental procedures. This is to prevent
infections. But this often isn’t needed.
- Some children have delayed
development. Talk with your child’s healthcare provider about their development. Your
child may need to be checked for issues.
When to Call a Healthcare Provider
Call your child's healthcare provider if:
- Your child's skin, lips, or fingernails become blue
- Your child has trouble breathing or feeding
- In TAPVR, the 4 blood vessels that
carry oxygen-rich blood to the heart from the lungs aren’t connected correctly.
- This condition prevents oxygen-rich
blood from being pumped to the body.
- Your child can't live with TAPVR
long-term because people need oxygen-rich blood all over their body.
- All children with TAPVR will need
surgery. This is done to restore normal blood flow through the heart.
- Many children with TAPVR will grow and
develop normally after they have surgery.
- Your child will need to see a heart
doctor for regular checkups for the rest of their life.
Tips to help you get the most from a visit to your child’s healthcare provider:
- Know the reason for the visit and what you want to happen.
- Before your visit, write down questions you want answered.
- At the visit, write down the name of a
new diagnosis, and any new medicines, treatments, or tests. Also write down any new
directions your provider gives you for your child.
- Know why a new medicine or treatment is prescribed and how it will help your child.
Also know what the side effects are.
- Ask if your child’s condition can be treated in other ways.
- Know why a test or procedure is recommended and what the results could mean.
- Know what to expect if your child does not take the medicine or have the test or procedure.
- If your child has a follow-up appointment, write down the date, time, and purpose
for that visit.
- Know how you can contact your child’s
healthcare provider after office hours. This is important if your child becomes ill
and you have questions or need advice.