AIM: This scoping review aimed to identify and map the signs and symptoms-apart from vital signs-that trigger nurses' concerns about the deteriorating conditions of hospitalized paediatric patients.

DESIGN: A scoping review was conducted in accordance with the Joanna Briggs Institute methodology.

METHODS: Six databases, including MEDLINE, CINAHL, Embase, Scopus, Swemed and ProQuest Dissertations and Theses databases, were searched systematically. Of 5795 citations, seven matched the inclusion criteria.

RESULTS: Objective observations, such as the patient's colour, pain-level changes, and behavioural observations, were identified as signs that would trigger nurses' concerns. Nurse's intuitive feelings or gut feelings when seeing a patient was also identified as an important factor for identifying a deteriorating paediatric patient. A "gut feeling" was described as both a reaction to patient signs and a feeling based on the nurse's intuition gained through experience. The signs or symptoms that would trigger this "gut feeling" were not identified.