Allisabovelove,
Not to put too fine a point on your discovery, but fructose, found in abundance in Gatorade is the principal ingredient in anti-emetics. To be certain, I can correspond a quality and ease of a bowel movement to having had my dose of "Gatorade" daily. This is important enough to make it a habit. Other sources of liquid in the course of the day are important and should be encouraged. I stopped eating rock salt the first time somebody poisened my food with it. For all the salt craving I had, I felt it made food taste bad and still do to a degree. My point is allowing a child to eat salt to his or her satisfaction is not a good indicator of how much they need. The danger is either way, but in America at least, nobody is likely to die from salt deprivation considering they add it to everything from apple sauce to yogurt. I have to plead ignorance when it comes to how much MORE salt is needed by CF patients compared to the non CF population. I don't think we need more, but that is a blind guess. When it comes to sweating out salt, I have no problems extruding all the salt the next CFer does, but for a long time I was almost hydrophobic. Not really, but water burns going down as do most water + products, so milk is a big part of my liquid intake. I don't recommend this but it is something that has worked for me. I probably own stock in Bessy's Utters but I also probably could walk the Sahara for days on a quart of water. Wait, I did walk the Sahara three full days with a quart of water! One of the sorry "benefits" of CF is the ability to conserve liquids in the body.
That last sentence is really important. If nothing special is done to condition the stool for a CFer with CF GI Syndrome, it will tend to be drawn of water. The Bowel is supposed to draw 93% of the water out of the average stool. Anybody who has mixed a batch of brownies knows 7% liquid will moisten a lot of powder into something too soft to be called a formed stool. As it turns out, the extended time transiting the colons allows the last traces of liquid to be absorbed by the colon. Without improving the bowel transit time, the stool needs some conditioning. Your Milk of Magnesia is a great choice for a little one but it is mostly an osmotic laxative like Mirilax. It coats the lining of the bowel and the barrier prevents all the moisture from being re-absorbed. Bulking and ozmotic laxatives need moisture in the form of ingested liquids. Mirilax is mixed with a prescribed amount of liquid, which you should consider as solid as steak, and a solid the weight and volume of that mixed drink. I wish I knew more about Lactulose in terms of clinical long term use. What is cool about Lactulose is like PEG, it remains intert through the digestive tract. It also acts as a very mild but persuasive contact (stimulant) laxative. Anybody using Lactulose or not using it for good reasons, please help!! From all I have read, it almost sounds too good. It isn't cheap and it used as a detoxicant against amonia. Amonia is nasty in the liver and really nasty in the gut when an amonia gas producing bacteria takes hold. Lactulose is supposed to be used in chronic use for CF patients but I aint found anybody yet who's benefitting from it. Ask the doctor about this one!
Electrolyes in a drink get sent through the gut. Water and the small amount of electrolytes needed are drawn quickly into the blood stream long before it goes through the stomach. The excess water and electrolytes pass on into the intistines. The small intestines can bring on all the misery that is found in the large intestine. As for Gatorade passing through the small intestine, it moves freely, possibly drawing in a little more water and dumps with everything else undigested into the large bowel. It is possible that your DS is still making meconium. CF GI Syndrome is charactarized by "meconium ilius equivelent" or a sticky blockage in the bowel. Even if there isn't, and most times it doesn't make a big sticky ball, your DS is making the stuff in a thin layer lining the intestines and bowels. That thin sticky film may not move for years. Poop could be sliding over it right now. It usually doesn't make a great "slide" in fact the feces adhere to the bowel wall and like a tongue laid on a frozen pipe, it peels off some skin each time it moves through the bowel. Electrolytes will keep moisture in DS's poop and will make his tummy feel better.
LL