If you want to get a flavour of women's experiences of pethidine have a look at this thread on mumsnet:
here
There are some positive comments on the thead, but also PLENTY of negative ones:
"it did nothing for me, no pain relief, just intense itching"
"I felt drugged up in the worst possible way. Really out of it and not like myself at all, very hazy memories of that period of my labour."
"I was totally spaced out. I've never taken any sort of hallucinogenic drugs but I now have a pretty good idea what they do! I only had a 4 hr labour but all I remember is asking DH for water and not much else. It was all very hazy and I have no idea about anything else that happened. I came to a bit for the actually delivery but even then I don't remember much about it. I don't remember when I first saw her, I don't remember who dressed her, any of that."
"the not being able to communicate thing was the worst. I lost myself completely."
"pointless as was the pethidine. Neither touched the sides so to speak.
Didn't feel any less pain whatsoever."
"I had pethidine, did nothing for the pain of the contractions at all and just made me completely out of it."
"Had it when dd1 was born, was awful. Made me vomit all the time, was totally out of it, couldn't push, kept crying, made the labour an awful experience. "
"wful, made me vomit, pass out between still painful contractions and generally feel terrible."
"I kept talking about chasing cats up trees and then the midwives waited until DH left the room and offer me some experimental new drug which I apparently agreed to have but have no recollection of the conversation.
"Spudulika erroneously stated that opiates are not given to children and babies. It would be very cruel to operate on a young baby and not give them the appropriate pain relief"
Didn't count the posts, but I think about a third to a half were strongly negative, along the lines of the ones I've c&p'd from above.
As to the assertion that pethidine can't in any way compare with heroin - well sorry, reading the above, and having seen people under the influence of heroin I really can't see how pethidine is so different in its impact to heroin (when it hasn't been adulterated or administered in a dangerous way).
I said "we'd never sanction its use on a healthy infant in any other circumstance"
Children who are being given it for pain relief are ill or injured, which justifies its use.
But newborn babies are usually neither unwell nor have injuries which justify medicating with powerful drugs.
In any case, I don't think you understand my concerns at all. You have been very literal minded in assuming I don't like pethidine because I feel it puts my baby at serious risk - like a dose of street heroin. Actually I'm aware that pethidine has been in use in childbirth for many, many years and has a pretty good safety record. What saddens me about my daughter having it is the thought that her first interactions with me and her father, her first attempts at breastfeeding, her first experiences of life outside the womb, were done under the influence of a sedative and mood altering drug which altered her perception of what was going on around her, and blunted her ability to act on her instincts. 