North Wales hospitals face 'extremely high demand'
North Wales hospitals are facing "extremely high levels of demand", with ambulances queuing up outside wards.
Wrexham Maelor, Glan Clywd Hospital and Ysbyty Gwynedd saw a big increase in admissions of frail and seriously ill patients on Tuesday.
Staff are working extra shifts and additional beds have been opened.
Betsi Cadwaladr University Health Board (BCUHB) asked patients "to be understanding and respectful of hospital staff".
The health board warned of "significant delays" in emergency departments and said patients have had to be held in ambulances.
Nigel Lee, BCUHB director of secondary care, said: "Before coming to an emergency department we would encourage all patients to consider whether or not their condition does require hospital-level care.
"Other NHS services, including NHS Direct Wales, your GP, high street pharmacies and local minor injuries units are able to provide advice on, and treat, a wide range of less serious ailments and conditions."