• Peter Hodgins, Megan McMinn, Matthew James Reed, Stewart William Mercer, and Bruce Guthrie.
• Centre for Population Health Sciences, The University of Edinburgh Usher Institute of Population Health Sciences and Informatics, Edinburgh, UK.
• Emerg Med J. 2022 Jul 1; 39 (7): 508-514.

BackgroundTelephone triage is increasingly used to manage unscheduled care demand. Younger adults are frequent users, and commonly call with chest pain. We compared pathways of care in younger adults calling with chest pain, and associations of patient characteristics and telephone triage recommendation with hospital admission.MethodsA retrospective study of all triage calls with chest pain to NHS24 advice line by people aged 15-34 years between 1 January 2015 and 31 December 2017 where chest pain was recorded as the call reason. Recommended outcome and subsequent use of services were determined using the continuous urgent care pathways (CUPs) database which records single episodes of care spanning multiple services. We determined the number of services involved, the proportion of patients with inpatient admission, those with an admission for an 'acute-and-serious' diagnosis, and the association between the triage call recommendation and these outcomes.ResultsThere were 102 822 CUPs identified, with 1251 different combinations of services. The most common pathway was an NHS24 call then attendance at a primary care out-of-hours (PCOOH) centre, accounting for 38 643 (37.6%) CUPs. 9060 (8.8%) CUPs ended with hospital admission, 3030 (3.0%) the result of an 'acute-and-serious' diagnosis. 8453 (8.2%) were given 'self-care' advice and not referred further, while 46.9% ended at PCOOH and 15.2% at ED. 'Asthma, unspecified' was the most frequent 'acute-and-serious' diagnosis. Compared with people given self-care advice, referral to other services had increased odds of inpatient admission (adjusted OR (aOR) for ambulance called 28.7, 95% CI 22.6 to 36.3; for 1-hour in-home general practitioner (GP) visit arranged aOR 36.8, 95% CI 23.2 to 58.5) and for admission with an 'acute-and-serious' diagnosis (aOR ambulance called 23.9, 95% CI 16.2 to 35.4; aOR 1-hour GP visit 48.3, 95% CI 25.5 to 91.6).ConclusionChest pain triage by NHS24 appears safe, but care pathways can involve multiple service contacts. While acuity assigned to the call is strongly related to the odds of hospital admission and odds of an 'acute-and-serious' diagnosis, 'overtriage' means few patients are directed to self-care advice.© Author(s) (or their employer(s)) 2022. No commercial re-use. See rights and permissions. Published by BMJ.

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