Hayes said the critical incident allowed the trust to work with partners across Kent and Medway to help discharge patients who were ready to leave hospital and free up capacity.
“We always plan in the NHS,” she said, but added: “When we get to this particular surge situation, we need to manage that very carefully.”
She urged people to continue attending planned appointments and operations unless contacted directly by the trust, and said anyone with a genuine emergency should still seek treatment.
Hayes encouraged people to use NHS 111, pharmacies and GPs, but said: “If you need to come in, you must come in.”
The trust reviews the situation every two hours. Hayes said it was hoped pressures would ease within 24 to 48 hours.
The trust previously urged people to visit A&E only if had a life-threatening illness or injury, or are collecting someone being discharged.
“We are currently reviewing patients scheduled for planned procedures and appointments,” the spokesperson said.
“Unless you hear from us directly, please assume your procedure or appointment will go ahead.”
The trust said that staff were focused on helping patients most in need.
Declaring a critical incident helped to “keep patients safe by drawing on additional support from our colleagues across the health system”.
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