Preparing for an intrauterine transfusion (IUT) can feel overwhelming, but understanding what to expect can ease anxiety and help you feel more confident going into the procedure. In skilled hands, IUTs are low-risk and often bring noticeable improvement to your baby.

Things to keep in mind:

• Risks are low (1–3%) in experienced hands
• Many babies perk up quickly after getting donor blood

What to Expect Before IUT:

• Bloodwork for cross-matching
• Procedure may be done in a surgical or ultrasound suite
• Varies: no anesthesia, local, spinal/epidural, or general

During the Procedure:

• Your belly is cleaned and prepped
• You may receive fluids, antibiotics, or calming support
• A support person may be allowed
• Some providers sedate the baby (optional, case by case)

Every hospital does things a bit differently. The key is experience and communication.

Steroid Considerations: Steroids may be given if your baby is at risk of being delivered early, especially before or around an IUT between 22–34 weeks. They help the lungs mature in case early delivery becomes necessary.

However, steroids can temporarily lower the PSV (peak systolic velocity) on an MCA Doppler scan, which may falsely reduce the MoM and delay diagnosis of anemia.

Once steroids are given, your care team should carefully time any further IUTs based on the clinical rate of red blood cell destruction, usually every 2 weeks until delivery

Note: If the first IUT would fall between 34 and 35 weeks, your care team may recommend delivery instead of transfusion, as it is often safer for the baby at that gestational age.