Thanks to Kathryn for keeping the updates going while Toby was at Mott's and I was away from computerland. We made it home and are attempting to organise house and schedule to include the new gadgets and activities. Both were pretty full already without a lot of room to squeeze in more. Or so I thought. But God has LOVINGLY ordained that we should try and so we will shake up those priorities a little more.
As for what exactly happened, I will try to sort it out.
On Monday, the 20th, Tobias weighed 8 lbs 10 ounces, having lost half a pound for the second time in as many months. By the time he was admitted on Wednesday, he was down another 4 ounces to 8 lbs 6. The official diagnosis is "failure to thrive" and the goal of the hospitalization was to determine both the cause and the cure. It was best to do this in an environment which enabled close monitoring of his entire package of health conditions because sometimes the treatment which helps one symptom can worsen another.
The doctors felt that there were three possibilities for cause, either singly or in combination.
1. He has high caloric needs. (This is practically a given because of his bpd and the extra work he puts into breathing.)
2. He was not taking in enough calories.
3. He is not able to benefit properly from the calories he consumes.
The verdict is: all of the above.
Toby was released from the NICU way back in June being bottle fed breast milk enriched from the normal 20 calories per ounce to a 24 calorie formula. After a month, he seemed to develop the strength he needed to nurse and became a completely breastfed baby. But it turns out that he actually has a weak suck. The problem did not surface right away since I had been pumping more milk than he needed and the large supply enabled him to get enough without a lot of effort. But as he continued a pattern of not stimulating enough milk production, the supply decreased. (God is the original creator of "supply and demand" systems.) So he was definitely not getting enough nourishment and the situation was deteriorating more rapicly as the reflux problems increased and he kept down less of what he took in. I had tried supplementing him last month with 24 cal bottles, but he will no longer accept a bottle. This was confirmed by the hospital staff as multiple nurses tried without success, the final judgement being made by the occupational therapist and the lactation consultant who feel that it is very unlikely that he will be persuaded to change his mind.
The good news is that no problems were found with the physical structure of his gastro-intestinal system. He does continue to have reflux problems. This is not uncommon with preemies with bpd as the breathing challenges place additional stress on the stomach. Judging by Toby's behavior, it can be quite painful in addition to causing him to spit up. He has added another medicine to alleviate this and it seems to be helping. The prayer is that this will be all that is necessary as each step up in treatment is accompanied by increasing negatives.
While in the hospital, he was fed by gavage again just as he was in the NICU. He had some nice steady weight gains and was released a full pound heavier than when he arrived- 9 lbs 6 ounces. We are continuing this feeding system at home with feedings every 3 hours. I had some practice in the hospital inserting the tube up his nose and down into his stomach. It remains in place between feedings, except when he decides to pull it out. He is quite skilled at both resisting its insertion and removing it, skills I credit to his NICU days when he spent quite a bit of time perfecting them.
Toby has begun learning to drink from a cup. It is a high hurdle for him at his adjusted age of 4 months and with his breathing difficulties. But it looks like the best hope for an alternative delivery system which will enable him to be free of the gavage tube. I am hoping he learns quickly. Despite a careful and thorough tape job by the nurse, he had removed the ng tube within an hour of leaving the hospital. So I have already gotten additional practice inserting it. It is definitely a job for two people- earplugs recommended.
Additionally, physical therapy of some type is recommended to strengthen his oral muscles. I do not yet have details about that, though I do have a few tools to begin working with him.
Some hospital photos:
resting comfortably

a quick EKG during the elevated potassium level scare

and exhausted after unsuccesfully resisting insertion of an iv

We are thankful to be home. We are thankful that Toby's problems were detected and diagnosed before the situation snowballed any more. We are thankful for good doctors and nurses and hospitals and family and friends. And we are thankful for the hint of roundness Toby is beginning to show.