Rayleigh Bug is now down to her last 2 weeks on Sabril (Vigabatrin). She will be on this medicine for a total of 2 months, give or take during the weaning process, when it's all said and done.
Last week Bug had her mandatory vision test. Eye exams are required by the FDA for any patient taking Sabril. For Bug, because she's only on the medication for 2 months, she was required to have one during the medication period and then she will have to have a second one done in August - a few months after she's done with Sabril. These eye exams are required because Sabril has several different side effects on vision.
The most common side effect on the eyes from Sabril is the loss or decrease of peripheral vision. If there is a decrease or loss to the peripheral vision due to the Sabril then it is permanent damage and will not be restored.
Other side effects include damage to the rods and the cones in the retina (that read light and darkness, black & white and color), overall decrease in vision and total loss of vision.
So, back to Bug! Last Tuesday she had an ERG (electroretinagram) on her eyes. Her pediatric neuro-opthomologist had her under anesthesia and placed small electrodes on her eyeballs. She sits in a dark room for 30 minutes to get a base reading on her rods and to calm the entire retina. Then they have a red light on to see how her eyes process that. Next is a soft white light, then a brighter white light, then a strobe light.
The test itself was really easy on Bug. She wasn't sore or anything for the electrodes and she wasn't nearly as groggy throughout the day like we thought she would be.
The ERG has to be evaluated by a trained person, computers cannot read it - yet, and it takes a while so we had a follow up appointment with her ped neuro-opthomologist (what a mouthful!) for that Friday.
During the exam Dr. Mike and his nurse used different lights and contrast tools for Bug to recognize and track and she did better than she usually does so that was enlightening! They also noted that her nystagmus has really calmed down, her eyes didn't shake once during the exam. It's very occasional now.
Dr. Mike explained that Bug's rods in her retina are responsible for seeing in the dark and seeing black and white images. Her rods are at 100%, so they're perfect and not affected by the medicine at all!
Then he said that her cones, responsible for seeing light and bright objects, are 1/3 to 1/2 depleted. He said that this could absolutely be caused by the medicine. He's not able to tell us for sure because she didn't have an ERG prior to starting Sabril so he doesn't have a previous test to compare these results to and see if it's something new or was always there. We really hope that the depletion was caused by Sabril because if it is then there is a good chance they will heal back to 100% after she's done taking Sabril.
Bug started her new medicine for infantile spasms last Monday. It's called Sabril, also known as Vigabatrin. It's a powder that we mix with water and dispense to her through a syringe. For the first 3 days she was on a half dose of 6ml worth of Sabril and then on day 4 she started the full dose.
She will only be on Sabril for 2 months. The longer you're on Sabril to more likely you are to encounter the side effects. A common side effect with Sabril is vision loss or vision impairment. We will be seeing Bug's neuro-opthomologist once a month for the 2 months she's on the Sabril so he can monitor her eyes.
The first few days that Bug started Sabril she was so drowsy, sleeping more than 15 hours a day. But that wore off and she gained her energy back... with a vengeance! She is now going through a little bout of insomnia. It's another side effect of Sabril but is supposed to wear off with time as she gets used to the new medicine in her system. In the meantime her neuro, Dr. Coleman, suggested we give her 1mg of Melatonin at night (along with the Clonodine) to help her sleep. Melatonin is a natural hormone the body produces to help you sleep, it's just an over the counter supplement at pharmacies. It's really helping! I mean, she's still not back to sleeping through the night but she's sleeping more than she's awake overnight now and that's a huge improvement since 2 days ago!
Bug's neuro also that he talked to the epileptologist here in Oklahoma and he suggested we try Vimpat if Sabril doesn't work. So it's nice to know we have another option before steroids.
Bug will have an EEG the first week of February to see if her background activity has changed. From what we can tell her seizures/spasm activity has gone way way down!
We'll see...
Yesterday Bug had an EEG and followup doctor appointment with her neuro right after. The EEG went well and she slept at the right time to get a clear reading.
When we saw Dr. Coleman, her pediatric neurologist, he looked solemn and said that he had bad news.
He proceeded to tell Michael and I that Bug's background has changed and is no longer normal. Instead, it is spiking even when she is not seizing and there is also some slowing in activity. And now the spike activity is happening on both hemispheres rather than just the right side like previous EEGs.
He said that this is noticeable with Infantile Spasms but that her seizures don't physical appear to be Infantile Spasms. Her neuro told us that she is experiencing spasm seizures. This is when she has her head drops and includes the seizures when she opens her eyes, makes wide arm movements and smacks her lips while blinking and opening eyes wide.
The treatment for these spasm seizures is to wean her off of Trileptal within the next 10 days because it does nothing for this seizure type. It is not hurting but it isn't helping. During that time we have increased her diet ratio from 3:1 to 3.5:1 (more fat and less carb). The Ketogenic Diet has shown great success is reducing spasm seizures for so many kids so we are focusing on getting her ketone levels really high again with more fat in the meals. Her ketones have been moderately high for the last few weeks but are only occasionally at their highest anymore.
We will give the 3.5:1 ratio 1 full week and if she is still having the spasm seizures we will go up to a 4:1 ratio (if her body is tolerating the diet, that is). And if she continues to have the spasms after 1 week on 4:1 then we will wean her off the diet and start a new treatment.
The new treatment options are this:
Sabril: Medical name is Vigabatrin. It is a short term medicine that Rayleigh would take every day for 2-3 months. It is specifically for spasms. Sabril can cause liver problems, irritability, sleep issues, and there is a more common effect of visual impairment. It is known to decrease her peripheral vision slightly. Like I said, she would take this medicine for 2-3 months (while continuing Clobazam) and then she would be weaned off the medicine and Clobazam would be the maintenance medicine. Supposedly whatever results she gains while on Sabril will remain when she is weaned off the medicine and stay on Clobazam.
ACTH: This is a steroid. It would a shot, that Michael and I would give her daily for 4-8 weeks. She would be on the steriod and Clobazam at the same time. It is similar to Sabril in that they are both short term but should produce long term results. The ACTH is known to significantly suppress the immune system so the neuro has already advised that if/when we go down this route that we should keep Bug in as much as possible during that time. The steroid also has side effects of causing high blood sugar levels, irritability, and sleep issues. The steroid requires a hospital stay to start so they can show us how to do the shots and monitor her levels to make sure that Bug's body is handling the steroid alright.
Rayleigh will have another EEG in 2 weeks if the spasms start to look controlled by the diet or 4 weeks if we need to start one of the treatment options.
Her neuro said that is completely up to Michael and I as to whether we'd prefer to try the medicine or the steroid start.
The worst part of this visit with the neuro was not this information though. The worst part, was that the neuro told us that Bug will always be developmentally delayed. There is an extremely high chance that she will never catch up. There is a slight possibility that she may still sit up, still talk and even may walk in her future. Chances of her talking before age 4 are very very slim and chances of her sitting or trying to walk won't improve until 5-8 years old. Michael and I were just devastated. Yesterday was a very hard day for both of us. The only thing that cheered us up all day was that Bug kept giggling. Like she was trying to tell Mommy & Daddy to be happy and that everything will be fine.
We are in a much better place with all of this today. I don't know why this happened to our baby girl but we will NEVER stop loving her and we do not love her any less than we did before. She is an amazing little girl and just a ball of love. Bug is a joy to be around.
Tomorrow is Christmas and we will focus on making this a wonderful holiday for our baby Bug. We will shower her with gifts from Santa to entertain her and hopefully help with her development and intrigue her to want to play!
Merry Christmas to all! May God bless your family during this holiday season :)
