The doctors at Riley have Shawn penciled in for next Thursday, April 11, 2013 for his next procedure. They are going to proceed with what is called the Hybrid procedure and not the traditional Norwood approach.
Stage I, Part 1
The first stage of the procedure will be to remove the stent placed in this atrial septum at birth and perform an atrial septectomy to create a permanent hole for communication between the upper two chambers. This will ensure that he is mixing oxygenated blood and non-oxygenated blood sufficiently. Next they will band his pulmonary arteries so to restrict blood flow and not flood his lungs and starve his body of blood. This will all happen on Thursday. He will need to go on bypass for a short time to allow for the septectomy. This is typically not necessary but they feel differently in Shawn's case since the current stent is quite long and may be interfering with proper drainage from the heart.
Stage I, Part 2
The second part of this procedure will happen the following day or early the next week. They will place a stent in his ductus (PDA) to allow him to get off of the prostaglandin medication that is keeping it open. There is potential for major side effects with prolonged exposure to this medication. After next week his heart should look like the picture above except for the atrial septum stent where he'll just have a hole and not a stent.
Stage II, Part 1 (Norwood) & Part 2 (Glenn)
The idea of the Hybrid approach (and the main reason it's Shawn's best option) is to minimize the trauma to the heart right after birth. It allows some time for the heart to grow stronger and in Shawn's case his lungs to heal. The doctors believe that if they went right into the Norwood after birth then his heart would not be strong enough after the surgery to over power the pressures in his lungs. The typical Stage II of the Hybrid approach would combine the Norwood and the Glenn, as previously described, into one large procedure at 4 - 6 months of age. This will differ for Shawn as well. Instead of one large trauma to the heart at 4 - 6 months the thinking is to break this stage into two smaller traumas to the heart and continue to give his lungs the maximum amount of time to heal. They will do all the steps of the Norwood at around 4 months then he'll come back at 8 - 9 months old for the steps of the Glenn. Both procedures have been previously explained in the "
About HLHS" page.
Stage III, Fontan
The third and final stage will be
as previously described at 2 - 4 years.
All of this is subject to change depending on the success of the procedures and the state of his recoveries.
Going into this morning I was hoping to feel relief and excitement that we would finally have a plan going forward. Now that I know what I know I am just afraid. The idea that he will have 5 major procedures within his first year of life is just flat out scary.