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There's currently no cure for autosomal recessive polycystic kidney disease (ARPKD).
But treatments are available to manage the condition's associated symptoms and any complications that may occur, such as:
If there's a significant risk your baby will be born with underdeveloped lungs (pulmonary hypoplasia), particularly if your baby is premature, treatment can begin before they're born.
You may be given steroids during your pregnancy.
This stimulates the development of your baby's lungs and helps them work more efficiently if they're born prematurely.
After birth, it's likely your baby will be immediately admitted to an intensive care unit (ICU), where they'll be placed on a ventilator to assist their breathing.
They may also be given a type of medication called a surfactant, which helps prevent tiny air sacs inside the lungs known as alveoli collapsing.
The more working alveoli your baby has, the better their ability to breathe.
Breathing difficulties can be made worse if your baby's enlarged kidneys press on their diaphragm, the sheet of muscle in the abdomen that helps with breathing.
In a few cases, the doctor treating your baby may recommend removing one of their kidneys to relieve the pressure.
Despite advances in treatment, pulmonary hypoplasia is a very difficult condition to manage in babies with ARPKD.
In some cases, your baby may need to stay in hospital for weeks or months.
Even with the best efforts of the medical team, around 1 in every 3 babies will die as a result of the condition.
An angiotensin-converting enzyme (ACE) inhibitor is the most widely used treatment for babies and children with high blood pressure.
ACE inhibitors reduce blood pressure by reducing the pressure across the filtering units of the kidney (glomeruli).
Possible side effects of ACE inhibitors can include:
Most of these side effects should pass in a few days, although some people have a dry cough for longer.
As well as ACE inhibitors, there are lots of other medications that may also be used to control blood pressure in children with ARPKD, such as calcium channel blockers, beta blockers and diuretics.
Many children with ARPKD also have problems affecting their liver, such as swelling and scarring.
Scarring in the liver can make it difficult for blood to flow through it, and this can mean that blood is forced through blood vessels in your child's stomach or gullet (oesophagus) instead.
These blood vessels, known as varices, are smaller and more fragile than the blood vessels in the liver and can burst under high blood pressure.
If your child has bleeding from these varices, urgent treatment will be needed to stop the bleeding.
This will usually involve passing a thin, flexible tube called an endoscope down their mouth and oesophagus, and either placing a small band around the base of the varices or injecting a special medication "superglue" to make the blood clot.
If your child has particularly severe liver problems, they may need a liver transplant.
If they also need a kidney transplant, both procedures may be combined into a single operation.
If your child's condition progresses to a stage where their kidney function is significantly affected, they'll usually need a number of different treatments to manage the various problems this can cause.
For example, your child may need treatment for the following problems:
Many people with ARPKD will eventually develop kidney failure at some point in their life.
When kidney failure occurs, your child will need to have their kidneys replaced or treatment to compensate for their loss of kidney function.
There are currently 2 effective treatments that can be used on a long-term basis:
A person only needs 1 kidney to survive, so unlike many other types of organ donation, a living person can donate a kidney.
Close relatives usually make the best match, so you may want to consider getting yourself tested to see if you're a suitable candidate for donation.
You could also ask your relatives if they'd consider having themselves tested to see if they could donate one of their kidneys.
If your child has ARPKD, their kidneys will be vulnerable to injury. A sudden knock or blow to their kidneys could cause bleeding, leading to severe and intense pain.
Your child may therefore be advised to avoid playing contact sports, such as football and rugby.
Some over-the-counter medicines, such as non-steroidal anti-inflammatory drug (NSAID) painkillers, can also be harmful if your child has ARPKD.
Make sure you check with your doctor before giving your child any new medication.
