WOW!! I thought I had heard all the words /issues about the GI tract. You taught me something new. I am so sorry for you to have this problem, but it is one problem I don't have...yet. What causes this? Is it similar to a tortuous colon? Also called redundant splenic or hepatic flexure. It's an extra long large colon on either side of the transverse colon.
Yours sounds very painful before and after surgery. I hope you have some great helpers in your life.

I seemed to get gastroparasis...the best cure was to add electrolytes to my liquid intake

Lewis

My doctor said don't do the surgery and wait as long as you can. Surgery causes severe bloating and you might need another surgery in a year or two.

the nissen fundo is mixed, it works well for most, but put your bed on a slant, cut out caffiene, that's the hardest part, PPI's in moderation, I've had that backfire, wipe out my good GI bio-bugs, had to get freeze dried breast milk to reset that part of my GI...again that damn caffiene, I bought an extra three years, cutting out caffiene...but maybe the cure is worse than the disease?

@kim1003 and others.. back in 2015 my local GI said a Nissen was what I needed to fix my Severe GERD problems . So I believed him.. bad decision as after the Nissen I was in the local hospital 9 days, had several tests after, was losing weight 50# in 2 months.. I went to Mayo MN.. they said "postoperative gastropanesis " after 3 tests that first day.. they gave me a way to cope.. small meals often..no lying down for 2 hours after eating.. tilt bed, etc.. they say 1 in 6 Nissen surgeries fail.. nerves in the hairnet arrangement around the stomach are damaged.. never to regenerate.. we often hope for the miracle cure.. but slow eating... not stuffing yourself..are things you should have learned as a child... try them before surgery.. if going out to eat..take half home for later. FOR 9 Years now every meal is a challenge.. I fight to gain weight.. ken

wow, that's cool, and I almost forgot about that, but back then I used popsickles and blue ice, I'd put them on my tummy laying there, cause it would cause the bowel I guess to "shrink" the coolness of it, and in doing so "contact" and that would stop that stupid what it's called, that swollen tummy, and I'd move them around and they'd shrink and get things to move along....popsicles to eat, and popsickles to lay on my tummy, and ...what's that swollen tummy thing? anyway, sure seemed to help. now here's another thing that I used for my gastroparesis, and that's a tenz unit, but gotta be careful cause it can cause the tummy to tighten up and tense up, maybe aggravate IBS, but a tenz to make my muscles "move" put one on one side or the other or the small of the back and such, and turn it on, keep the juice low enough that it's not stinging, and see if that helps, I think that it helped me...still not sure, oh yes, one more I bought freeze dried breast milk from a lady on the web, and added that and that probioltics, there's like two hundred to four million different probiotics and that seemed to help me go from constipation to gooey poo, to regular bowel movements...all those little bugs and such, there's a ton of live organisms, and I read that they are using fecal implants from donors, so I got thinking, okay where to we get them in the first place, well from mom, right? and it can't all be in utero, cause the blood and such from the placenta and that chord thingee, so how...so I asked Charlie my brother and he said well breast milk, so I go hmmm, and starting doing research, and wow, amazing. Also raw milk from cows, but goats is better, but if you can snag some raw breast milk, maybe from a friend, or some freeze dried that's the best, and I think that all those bugs might help with the action and motility, the entire process...
but then I don't know, all I know is that it helped me a lot ,and those PPI kill off the good bugs, and things like SIBO and such, and misery and pain and that breast milk sure helped me a ton of a lot, almost fixed that part of me...life is good again~

Anyone experiencing gastro issues post Covid?

You have my sympathy.

Has anyone had a successful Fundo surgery? All I read is horror stories. Anyone try Lynx ?

Well I had to have it. I would never go back to the horrible symptoms I had. Racing heart, fire in my gut so bad I needed a new esophagus flap, stomach protruding into my chest making it hard to breathe, bending over and food coming out, aspiration in my sleep, never being able to lay down. Every surgery has risks. You just need know if you're willing to take them. I do have other problems with my digestion I've had since before my surgery. But the slow digestion and the other stuff seems to be worse now. I also have mesch protruding into my chest since my latest CT. I'm hoping she used a dissolvable mesch so it will just dissipate. The hernia problems are gone.