Out of 110,000 invitations, only 12,000 have come forward, Dr Noirin Russell added.
Dr Russell is clinical director of CervicalCheck, a smear test service which can detect the majority of cancers early.
She said: “People are afraid to interact with healthcare and come into healthcare settings now because of the fear of Covid-19, and that is deeply worrying and concerning.”
30,000 women on gynaecology outpatient list: Dr Nóirín #washyourhands Russell @russellnoirin tells #IHCA2020 that it is impossible to have functioning cervical cancer screening service without a functioning gynaecology service #CareCantWait @DonnellyStephen @paulreiddublin pic.twitter.com/sPjhoDZjZI
— IHCA (@IHCA_IE) October 10, 2020
Dr Russell said it was a problem across the health system.
“People are afraid to come forward. We need to get people to come forward and we need to ensure we have the capacity to look after them when they do,” she added.
“Covid-19 has brought home to us the importance of the ethical application of scarce resources.
“We need to have conversations about how best to deliver these scarce services.”
She said people needed to make appointments when first invited and not wait for reminder letters.
Limited capacity in testing laboratories means there needs to be a staggered approach and a social media campaign has been launched to address the problem.
She added: “We cannot have a situation where everyone who is invited all decides to come next month, we won’t have capacity in the system.
“It is about managing the scarce resources.”
In August this year 30,000 women were waiting for outpatient appointments.
Dr Russell said it was impossible to have a functioning cervical cancer screening service without a functioning gynaecology service.
“We need to address capacity within the services,” she added.
HSE chief executive Paul Reid said the health system enjoyed the trust and confidence of the Government as well as massive extra resources.
The profile of the disease continues to deteriorate. There have been an additional 32 hospitalisations and 8 ICU admissions in the past 24 hours.
We are continuing to see a high number of daily cases. https://t.co/M0Pl8Jz0wA
— Dr Tony Holohan (@CMOIreland) October 9, 2020
“It is a much more challenging phase right now,” he said.
“We are now managing the Covid cases but also in the context of managing all the other services we are restoring. People are tired and frustrated.”
They addressed a virtual conference of senior medics.
The Irish Hospital Consultants Association (IHCA) has said that the unenviable choices facing the Government due to Covid-19 will mount up if it continues to evade obvious remedies to the healthcare challenges.
Mr Reid said 450 intensive care beds should be in place in Ireland by 2022 and he had been pressing the case with ministers for more investment.
He said: “Our ICU is too tight.
“We do rely on surge and it does impact on elective care so I am making very strong arguments about strengthening that.”