CONCERNED expectant mothers and patients flooded the Mount Carmel helpline, causing the system to be blocked at times over the weekend.
Thousands of patients have been left in limbo after the announcement on Friday that the hospital would close after a liquidator was appointed.
A leading maternity rights group said the closure raised serious concerns because it meant there was no longer a private independent medical option for women seeking care outside of the HSE.
AIMS Ireland (AIMSI) has urged Mount Carmel to give clarity on what will happen to expectant mothers who now have to transfer and whether they will be given a choice of hospital and consultant.
"AIMSI would like to see assurances made for women who are currently booked into Mount Carmel," a spokeswoman said.
"NMH and the Coombe have both opened their doors for women transferring. However, there remain many unanswered questions – will women have a choice between which public Dublin hospital they transfer to?
"Will women be able to avail of private obstetric-led care as they did with Mount Carmel? Will women have a choice of a specific obstetrician?"
The Irish Nurses' and Midwives' Organisation claimed over the weekend that the hospital was on course to break even by the end of this year, despite its financial troubles.