A Cornish MP is demanding an urgent meeting with Health Secretary Patricia Hewitt over job losses at the Royal Cornwall Hospital.
Further details of the cuts are to be released on Wednesday
Three hundred jobs are due to go and some theatres and wards will close as a result of a deficit of more than £8.1m.
Falmouth and Camborne Lib Dem MP Julia Goldsworthy said she thought health ministers might be unaware of the gravity of the situation.
The hospital trust will be speaking at a press briefing on Wednesday.
Ms Goldsworthy said: "Clearly I don't think they understand that this is the only acute hospital in Cornwall and perhaps they are not aware of the huge impact this is going to have on frontline services.
"So I am going to be writing to the minister asking for an urgent meeting and calling for a debate on the issue perhaps where it can be raised on the floor of the House."
Hospital staff were told at briefings on Tuesday that staff in secretarial and managerial jobs were set to go through voluntary redundancies, with theatres and wards also to close.