Critical care services

Monitoring and treating patients with life-threatening conditions 

Admission to critical care may be pre-planned, for example for close monitoring following heart surgery. It might also be unplanned, for example following a car accident, trauma or deterioration in a patient's condition.

Our critical care units

Critical care units are areas within the hospital which are specially staffed, equipped and designed to closely monitor and treat patients with life-threatening conditions. Patients may need specialist treatment because one or more of their body systems, such as their heart, lung or kidneys, are not working properly.

We have three critical care units - one at Guy's Hospital and two at St Thomas' Hospital. If these units are full, patients may be cared for in our theatre recovery units, where the critical care team continues to manage their care. 

Our high dependency units

Patients no longer needing critical care treatment may be moved to either a high dependency unit or one of our wards. We have four high dependency units (HDUs) at St Thomas'. These are for patients who need less intensive care than on the critical care units, but more than can be provided on our general wards. 

Our post-critical care follow-up clinic

All intensive care patients who are at risk of Post-intensive Care Syndrome (PICS) will be invited to attend an appointment in the post-critical care follow-up clinic around 2-3 months after discharge from hospital.



Tel: 020 7188 8070


Access guide

Accessibility information to support you.

Guy's Hospital

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Intensive Care Unit 1, St Thomas' Hospital

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Intensive Care Unit 2, St Thomas' Hospital

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