Ahhh. That's my sigh of relief at finally being back in the land of electronic communication! :) Although, I am borrowing Drew's laptop at the moment, as he is trying to resurrect mine. Something about not reading the hard drive.... We do not have an internet connection at the CrossBridge house, so this is the first time we have been able to connect and send an update, other than texts from our phones.
So, we made it to Charleston late Wednesday afternoon and got settled in at the CrossBridge house. It is so comfortable, and we are so thankful that it was available to us. Rebekah did well during her pre-op procedures yesterday (Thursday) and even suffered through a second blood draw after part of the first blood draw clotted.
Dr. Bradley, Rebekah's surgeon, came to talk with us yesterday afternoon and really surprised us! We had been prepared to discuss the removal of Rebekah's right lung, and that was not his plan at all! Because Rebekah has not had any issues with infections or pneumonia in her lung(s), Dr. Bradley is content to just leave her lung intact and watch it. If in the future Rebekah's collateral arteries grow, or if technology develops to allow the use of that lung, he would be in favor of attempting to connect it to her pulmonary artery. If Rebekah begins to develop chronic lung infections or other lung problems, Dr. Bradley would reconsider removing her lung at that time.
Drew and I are very satisfied with this approach. Of course, we want whatever is best for Rebekah, but we were disappointed with all the talk of removing the lung. That would have left Rebekah with no chance at all to ever use that lung. While Rebekah may never use the lung, at least she will have some kind of a chance if the lung is not removed.
Now for the long explanation of Rebekah's heart. This information was all brand new to us, so we were a little overwhelmed with the complete turn around after our meeting with Dr. Bradley. The short story is that Rebekah is completely and totally unique. There is not (or has not been) another documented person with Rebekah's unique anatomy combination of Truncus and a missing pulmonary artery. Even a visiting professor from London, who only studies the anatomy of children with heart defects has never seen or heard of this type of combination. SO....all of that leads to a lot of uncertainty as to what might or might not happen when Rebekah's heart is repaired and whether or not her body will tolerate the repair.
So let me tell you what we know for sure that Dr. Bradley will be doing. At this time, Rebekah should be intubated and prepped and surgery should be starting at any time. Dr. Bradley said that it will take him about an hour to work his way through the scar tissue left from Rebekah's first surgery. After that, Rebekah will be placed on ECMO (the heart/lung bypass machine) while Dr. Bradley works on creating a pulmonary artery from the right side of Rebekah's heart to her left lung. He will be using a tube-graft, which is made from a Gore-tex material and a human donor valve. This conduit will allow the blood from the right side of Rebekah's heart (unoxygenated) to flow into her working lung, receive oxygen, and then will return to the left side of her heart to be pumped out through what will become her aorta (the "trunk" that originally supplied both her body and her lung with blood).
Now comes the tricky part. See, in a straightforward Truncus repair, the next step would be to close the large VSD (ventricular septal defect), which is the hole Rebekah has between the right and left sides of her heart. BUT, because Rebekah's conduit will only be supplying blood to her left lung, the concern is that too much pressure will build on the right side of her heart. Imagine a balloon in a small box with a straw in one side. The straw represents the pulmonary artery that is only going to Rebekah's left lung (instead of splitting into both lungs). Now as you begin to inflate the balloon (pumping blood into the right side of her heart), about half of it (or more) will flow through the straw, but after a while the balloon will begin to expand and have nowhere to go. Over time, it would create too much pressure for the balloon and eventually it would burst. Now, imagine that a hole was in the side of the box. There is now an escape vent for that extra pressure to flow into and relieve the stress on the balloon. That, in a nutshell, is a good picture of the concerns Dr. Bradley has about Rebekah's heart.
So, Dr. Bradley will create the conduit and then run a Flow Test to check the pressure inside the right half of Rebekah's heart. If the pressures are high, he will be leaving the VSD open, or at least partially open, in order to allow blood to flow into the left side of Rebekah's heart and relieve some of the pressure. The last thing anyone wants to do is create high pressures (essentially high blood pressure) in her heart. Over time, that would certainly lead to heart failure. On the other hand, leaving the VSD open will result in Rebekah's oxygen saturations remaining low and will increase the likelihood of her remaining on oxygen after surgery.
Now, you may be thinking of the biggest question that we had after Dr. Bradley explained all of this: What will happen with Rebekah long-term? Well, the answer is that no one knows. :) As Rebekah grows, so will her lung (obviously), and as her lung grows larger, it will have the capacity to hold a greater volume of blood. If (when) that happens, Dr. Bradley would be able to close the VSD, possibly even in the cath lab and not during open heart surgery, because her left lung would be able to hold the full volume of blood from the right side of her heart. Of course, if at any time there were collateral arteries that formed to the right lung, they would be used to form a pulmonary artery and would give Rebekah the use of both lungs.
In the short-term, the main concerns are for Rebekah's recovery after surgery and what kind of stress this surgery will put on her heart and lung. No one has wanted to make any kind of speculations about the recovery time, although we are all hoping that it will go smoothly and quickly! Dr. Bradley called in his best team for this surgery - seriously! We were told by several people this morning that the team Dr. Bradley put together for Rebekah is the best there is. Apparently he has different people that he calls depending on the complexity of the surgery, and we got the "A-list."
Just a few minutes ago, we were paged with our first update. The surgery began on time, and Rebekah was stable. Everything is going as planned. The earliest we can hope for this surgery to be completed is around 1:30 this afternoon, but could be as late as 3:30, depending on how things go.
Our biggest prayer today is for wisdom. There is no cut-and-dried technique for Dr. Bradley to follow in Rebekah's heart surgery. A lot of his work today will be trial-and-error, and just plain "gut feeling." He has been working miracles for a long time, and we have been told he just has a sense of how things are going to work when he is in the OR. Please pray for wisdom and divine guidance as he determines the best course of repair for Rebekah's heart. Also, pray for Dr. Bradley's assistants, Cathy and Zeh (pronounced like "hay" with a z), the anesthesia team, the nurses, and the rest of the OR staff as they monitor Rebekah.
Thank you so much for caring and praying for our little girl. You have no idea what an encouragement it was to check facebook today and see all of the posts and requests for prayer that have gone out for Rebekah. Also, thank you for the prayer vigils that are going on today. I know of at least two churches whose members have signed up for around the clock prayer times during today. Thank you all so much for your prayers!
Nancy