Abbyloopers is a Yahoo Group which you have to join (they send you a questionnaire which keeps the trolls out!) as the actual website isn't much cop. Hate the Yahoo Groups format, but the support there is wonderful, if a little US orientated so there are a lot of insurance questions. Most of the mothers have lost babies too. But there are a few of us UK ladies there as well!
Worzel - yep, like you I spent an hour fully conscious whilst they fiddled around and cursed trying to fit my rescue cerclage. As you say, not an experience anyone would want to repeat! I hadn't even shaved my legs for about a week as spreadeagled in an operating theatre with a large team of men peering up my bits wasn't quite how I'd expected the evening of my anomaly scan to go! Still, like you, I had an amazing doctor who I fully credit with saving DC2 where most surgeons would have failed.
I even want a fourth because I am mad.. fortunately the TAC will be fine for subsequent pregnancies too as it's permanent - gotta love it! DH is less keen because of all the drama but it's not him physically living it. And my UK TAC doctor has said I should basically have normal pregnancies now, aside from the c-section requirement. So far what he says is true :)
TACs do really help with infection as you have probably read and with no infection, far less chance of pPROM. Can't believe they told you to "wait and see" with the cerclage, ugh, some doctors make me sick.
As for your questions - my TAC was done under general anaesthetic (yay!!) and I got lots of morphine afterwards (double yay!). It was a traditional open TAC, not a lap TAC - the odds are better for traditional ones. They monitored baby throughout via ultrasound and the first thing they said when I came round was that my baby was absolutely fine. In fact there was a queue of random people coming past my bed telling me this over the next few hours and it started to get funny by the end, or maybe that was the morphine Obviously there is a theoretical risk of pPROM during surgery but it is really tiny. I think out of the 200+ documented surgeries on Abbyloopers, only one did. Doesn't half play on your mind though!
The recovery was similar to a c-section as the surgery is almost identical. Everything really hurt for the first few days, and I couldn't really lift anything once I was home for the first few weeks at first. But DH had to go back to work a week after my surgery and I managed, with a lot of CBeebies to distract the children! As for work, I'm a self-employed family photographer so I just took the time off, and did my first session post surgery at about 4 weeks. I would have thought depending on your job you could go back as soon as 2 weeks if it was easy to get to and you just sit down all day. The wound stopped being sore even if I poked it at about six weeks, and stopped being sore unless I poked it around the two week mark. It's below the hairline, right where a c-section scar would be.
libelulle - Sorry to hear you had such a horrible and long NICU experience, crikey. Yes, I can see why you'd do anything to avoid that again.
I don't think there is any specific NHS criteria as it is down to the the doctor. Most do seem to expect a failed preventative TVC or some sort of congenital problem, or a scarred cervix etc. It is really hard to find a TAC surgeon, especially one with a lot of experience, and I'd guess there were no more than half a dozen. However, it's not all bad news. Some TAC surgeons are big advocates for the TAC and will fit it in many cases where a TVC could probably work too if they think the IC is genuine and the patient is willing to accept the risks. The two US surgeons, Dr. Davis and Dr. Haney both fit into that category, and Dr. Davis will do it at cost for foreign patients who don't have US insurance, I think the costs are a few thousand pounds plus flights/hotels. Dr. Davis hangs out on Abbyloopers a lot and both those doctors offer free email/telephone consultations so it could well be worth contacting them to see what they think.
I never had a failed preventative TVC (in fact I had a successful rescue cerclage) and my UK NHS doctor agreed to one. I think if anyone on the NHS would approve a TAC in your circumstances, he would. You could always email him and ask? I don't have his address to hand but you can find it on the Chelsea and Westminster website I think. He is a big advocate.
Okay, sorry for the huge essay too!! Hope it was helpful for both of you and I haven't repeated myself too much - I have pregnancy brain!