The best evidence for treating post-intensive care syndrome is about what happens in the ICU

Survival from critical illness has produced a large population of survivors with new or worsened physical, cognitive and mental health impairment — post-intensive care syndrome — and a parallel syndrome in their relatives, which this review puts at 20 to 60% of family members. That second figure is the one most units have never counted.

The review is explicit about its own limits: a structured descriptive approach rather than a formal guideline process, with an evidence-strength label attached to each recommendation, and a conclusion that the evidence base remains too limited and heterogeneous for firm recommendations. Within that, the shape of the argument is clear. The mechanisms linking acute illness to persistent disability — skeletal muscle pathobiology, neuroinflammation, mitochondrial and neuroendocrine dysfunction, epigenetic change — all operate during the admission. And the interventions with the strongest support are the ones delivered there: the ABCDEF bundle, meaning light or no sedation, delirium prevention and treatment, early mobilisation, and family participation in care.

That inverts where most effort goes. Post-ICU clinics are heterogeneous, unevenly organised and of unproven benefit; sedation practice and early mobilisation are neither, and they are decided on the daily ward round by people already present.

The practical instruction is to treat sedation depth, delirium screening, mobilisation and family presence as long-term outcome interventions rather than as comfort measures — and to ask, at least once, how the relatives are doing.

• Treat light sedation, delirium prevention and early mobilisation as interventions against long-term disability
• Bring family into care rather than restricting them to visiting; family participation is part of the bundle
• Ask about relatives' wellbeing — 20 to 60% of them are affected
• Use a two-step assessment approach across the three PICS domains rather than a single global measure
• Do not assume a post-ICU clinic is the answer; their organisation and benefit remain unproven

Why it matters

It moves the intervention point for long-term ICU disability from the follow-up clinic, where evidence is weak, to the admission, where it is strongest.

Don't overread it

This is a narrative review whose authors state the evidence is too limited and heterogeneous to support firm recommendations.

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