Emergency Care Institute Clinical tools

Unstable or critically ill patients

Published: September 2024. Next review: 2029. Printed on 7 Jul 2026.


The recognition and management of unstable and critically ill patients is a crucial clinical skill. Any clinicians who care for unwell patients should have the skills to recognise deterioration and manage it appropriately and quickly.

All patients who are unstable or deteriorating require a comprehensive assessment, completion of full set of vital signs, and ongoing reassessment with monitoring trends in vital signs. When medical or nurse practitioner support is delayed or unavailable, use the appropriate Emergency care assessment and treatment (ECAT) protocol.

Early consultation is recommended with intensive care, retrieval, anaesthetics, surgery, interventional radiology, cardiology and trauma teams as the situation dictates and context allows.

Considerations for the critically ill patient

The Checklist for adult patient waiting for retrieval or urgent transfer (PDF 211.6 KB) includes guidance for managing critically ill patients waiting for retrieval or urgent transfer.

Related adult ECAT protocols

Related paediatric ECAT protocols

Related clinical tools

Institute of Trauma and Injury Management tools

Paediatric tools

Paediatric improvement collaborative (PIC)

Other useful resources

Between the Flags
A 'safety net system' designed to assist clinicians to recognise when patients are deteriorating and to respond appropriately when they do.
Source: Clinical Excellence Commission

Recognition and management of patients who are deteriorating (PD2025_014)
Describes the local systems, structures and processes needed to recognise, respond to and appropriate ly manage patient physiological and mental state deterioration.
Source: NSW Ministry of Health

Useful apps

CIAP: Mobile apps (NSW Health staff only)
A curated list of clinical apps.

Emergency Procedures Emergency pro
Instructions and demonstration videos of common procedures.
Source:  Emergency Procedures Ltd
Emergency procedures

iResus Google iResusApple
Access the United Kingdom resuscitation and anaphylaxis algorithms.
Source: Resuscitation Council (UK)

iTransfuse
Information about prescribing red cells and platelets, and transfusion reactions.
Source: Lifeblood

Westmead ECMO Westmead ECMOGoogle Westmead ECMOApple
Algorithms to assist clinician and patient decisions regarding the healthcare of extracorporeal membrane oxygenation and cardiac arrest patients.
Source: Western Sydney Local Health District

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