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For poisoned patients, ambulance services may be the first point of contact for medical attention. With limited training in toxicology, ambulance services are encouraged to contact the Poisons Information Centre (PIC) for advice. This study aims to characterise referrals to a PIC from a state ambulance service with the purpose of improving information delivery and efficient use of these services. This was a retrospective observational series of referrals to an Australian state PIC from ambulance staff from 1 January 2020 to 31 December 2020. Referrals were identified through the PIC Pharmhos database where the call originated from either a paramedic or emergency dispatch officer. Call reports were reviewed to extract data on patient demographics, exposure details and advice provided by the PIC. There were 1537 calls regarding 1420 poisoning exposures over the 12-month period, with 117 (7.6%) follow-up calls, representing 4.1% (1537/37835) of total calls to the PIC. Initial calls originated from paramedics in 999/1420 (70.4%) referrals, with dispatch officers referring 421/1420 (29.6%). Paediatric patients aged &lt;15 years were involved in 492/1420 (34.6%) exposures with the commonest age range being 1–4 years. Most referrals involved pharmaceuticals exposures (756/1420 [53.2%]) followed by chemicals (557/1420 [39.2%]) and drugs of abuse (69/1420 [4.9%]). The commonest agents involved were paracetamol followed by quetiapine and sertraline. The PIC advised no treatment following benign exposures in 617/1420 (43.5%) calls, first aid measures in 333/1420 (23.5%) calls, supportive measures in 339/1420 (23.9%) calls and specific treatment in 32/1420 (2.3%) calls. Referral to the hospital was advised in 761/1420 (53.6%) calls, the majority of these were following deliberate self-poisonings (428/1420 [30.1%]). Ambulance staff commonly contact the PIC following benign exposures where no treatment is required. Ambulance referral to a PIC following suspected poisonings may have a role in preventing unnecessary transfer to hospital in poisoned patients.

Ambulance referrals to an Australian Poisons Information Centre: a retrospective series