KGH says its systems weren’t infected in Friday’s cyber attack after the hospital’s IT team deployed a patch to prevent it in March.
The ransomware attack left hospitals up and down the country in chaos with many systems impacted.
KGH took precautionary measures on Friday afternoon and disconnected itself from the national network to prevent infection.
It left phone lines, emails and other hospital systems down but, over the weekend, systems were gradually brought back into play.
A KGH statement said: “KGH systems have not been infected.
“The patch that prevented infection had been deployed by KGH IT team to the majority of its PCs in March 2017.
“Over the weekend, thanks to the hard work of the IT team, the trust has reinstated its PACS system and so is again able to transfer radiology (X-Ray) images and CT and MRI scans across the trust and between providers.
“Our patient administration system (Medway and Medway maternity) and theatre booking system (ORMIS) are all operating as normal.”
Further decisions on other impacted systems, such as emails and externally-hosted systems, will be made today (Tuesday).
KGH thanked people for their patience and advised people to attend appointments as planned.
Its statement added: “The executive team want to thank everybody who has worked so hard since Friday to minimise the impact of the cyber attack upon our services.
“Our advice to patients is that we continue to provide services as usual and encourage people to continue to attend for outpatients or planned clinic appointment and operations in the usual way.
“Our A&E department has seen increased levels of demand and we ask that patients consider whether their need to be seen is an emergency or, if less urgent, they should seek alternative treatment via NHS Direct, local pharmacy or GP.”