Wondering if you had any success in obtaining those Grangegorman records?
If not, you may wish to try this contact (which worked for me). Please note, as the address suggests it will require the submission of a Freedom of Information request:
Freedom of Information Officer
Health Service Executive
224 Conolly Norman House
North Circular Rd
DUBLIN 7, D07 VPT0
I Did have an email address for the person concerned, but after my computer crashed last year, I lost a lot of docs. BUT, I do have an email address for Health Service Executive's FOI section (I think): mh.dncc.hse.ie
I hope this helps.