Junior doctors in Cumbria are on strike today as part of a long-running dispute with the Government over weekend working.
They joined thousands of colleagues across England in a 48-hour walkout that began at 8am this morning.
No operations are expected to be cancelled at Carlisle's Cumberland Infirmary or the West Cumberland Hospital in Whitehaven but NHS bosses are warning some appointments may be affected.
In south Cumbria, the NHS trust says it has contacted patients who will be affected.
"We're out here today because we fear that the new contract which the Government is imposing upon us will not be safe for us or our patients in the future so we're taking action now to stop patients potentially coming to greater harm in the long run.
The current strike is the third walkout called by the British Medical Association in its row with the Government.
Under the new contracts there would be changes to unsocial hours payments and working hours to ensure more junior doctors are available at weekends. The Government say changes are needed to help the NHS improve care at weekends and create a fully seven-day service.