• Paul-Georges Reuter, Isabelle Durand-Zaleski, Olivier Ducros, Océane Grignon, Isabelle Megy-Michoux, Adeline Sourbes, Thibaut Desmettre, Nicolas Javaud, Frédéric Lapostolle, Eric Vicaut, and Frédéric Adnet.
• AP-HP, Service des Urgences et Service d'Aide Médicale Urgente, Centre Hospitalier Universitaire Avicenne, Bobigny Cedex, Francia. AP-HP, Service d'Aide Médicale Urgente 92, Hôpital Raymond Poincaré, Garches, Francia.
• Emergencias. 2021 Aug 1; 33 (4): 292-298.

ObjectivesTo determine the efficacy of emergency medical center physicians' use of a protocol to guide their management of telephone consultations for fever and gastroenteritis.Material And MethodsCluster randomized controlled trial. Participating centers were randomized to use the telephone protocol or provide usual telephone assistance. Six emergency centers in France included calls from patients needing advice on fever or gastroenteritis. Centers assigned to the protocol followed specific guidelines on managing the call and giving advice on treatment. Primary endpoints were the number of in-person visits and hospital admissions required within 15 days of the call. Secondary endpoints were patient satisfaction and costs.ResultsA total of 2498 calls were included. Use of the assigned protocol while attending 1234 calls was associated with a relative risk for hospitalization or an unscheduled in-person visit for care of 0.70 (95% CI, 0.58-0.85) versus usual practice. Ambulance use, admission to an intensive care unit, mortality, morbidity, and symptom improvement did not differ significantly between centers using the protocol and those following usual practice. Ninety percent of the patients were satisfied. The cost of care was €91 in centers applying the protocol and €150 in the other centers (P .01).ConclusionUse of the protocol was associated with fewer unscheduled in-person visits for care and fewer hospital admissions. The protocol is safe and less costly than the centers' usual approaches to giving telephone advice.

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