this link has been posted before - but I think it's worth repeating - a great Pogues resource -
http://www.poguetry.com/ Dark Streets of LondonElectroconvulsive therapy, or ECT is the current euphemism for "electroshock therapy;" so the place where they gave ECT would be a mental institution. Shane spent at least some time at St. John of Gods, a mental hospital in Dublin, a theme which recurs thoughout his writing (see "Cotton Fields," "Sunnyside of the Street," and "St. John of Gods"). In A Drink With Shane MacGowan (2001, Grove Press, ISBN: 0-8021-37900-3, p.86) Shane relates that he did not receive ECT while he was institutionalized, but it was in use at the hospital:
.Victoria: "Did you have ECT?"
Shane: "No, but they were prepared to use it if someone wasn't controllable by any other method. So, I'll always sign a petition against ECT... I think it's disgusting" [ellipsis in the original].