F Javaudin1, B Leclere2, J Segard3, Q Le Bastard4, P Pes5, Y Penverne5, P Le Conte5, J Jenvrin5, H Hubert6, J Escutnaire6, E Batard4, E Montassier4. 1. Samu 44, Department of Emergency Medicine, University Hospital of Nantes, France; University of Nantes, Microbiotas Hosts Antibiotics and bacterial Resistances (MiHAR), Nantes, France. Electronic address: francois.javaudin@chu-nantes.fr. 2. University of Nantes, Microbiotas Hosts Antibiotics and bacterial Resistances (MiHAR), Nantes, France; Department of Epidemiology and Medical Evaluation, University Hospital of Nantes, France. 3. Samu 44, Department of Emergency Medicine, University Hospital of Nantes, France; Department of Emergency Medicine, Hospital of Saint-Nazaire, France. 4. Samu 44, Department of Emergency Medicine, University Hospital of Nantes, France; University of Nantes, Microbiotas Hosts Antibiotics and bacterial Resistances (MiHAR), Nantes, France. 5. Samu 44, Department of Emergency Medicine, University Hospital of Nantes, France. 6. Public Health Department EA 2694, University of Lille, Lille University Hospital, France.
Abstract
INTRODUCTION: Loss of pupillary light reactivity (PLR) three days after a cardiorespiratory arrest is a prognostic factor. Its predictive value upon hospital admission remains unclear. Our objective was to determine the prognostic value of the absence of PLR upon hospital admission in patients with out-of-hospital cardiac arrest. METHODS: We prospectively included all out-of-hospital cardiac arrests occurring between July 2011 and July 2017 treated by a mobile medical team (MMT) based on data from a French cardiac arrest registry database. PLR was evaluated upon hospital admission and the outcome on day 30. The prognosis was classified as good for Cerebral Performance Category (CPC) 1 or 2, and poor for CPC 3-5 or in case of death. RESULTS: Data from 10151 patients was analysed. The sensitivity and specificity of the absence of PLR for a poor outcome were 72.2% (71.2-73.2) and 68.8% (66.7-70.1), respectively. We identified several variables modifying the sensitivity values and the false positive fraction of a factor, ranging from 0.49 (0.35-0.69) for the Glasgow Coma Scale to 2.17 (1.09-2.48) for pupillary asymmetry. Among those living with CPC 1 or 2 on day 30 (n = 1990; 19.6%), 621 (31.2% (29.2-33.3)) had no PLR upon hospital admission. In the multivariate analysis, loss of PLR was associated with a poor outcome (OR = 3.1 (2.7-3.5)). CONCLUSIONS: Loss of pupillary light reactivity upon hospital admission is predictive of a poor outcome after out-of-hospital cardiac arrest. However, it does not have sufficient accuracy to determine prognosis and decision making.
INTRODUCTION: Loss of pupillary light reactivity (PLR) three days after a cardiorespiratory arrest is a prognostic factor. Its predictive value upon hospital admission remains unclear. Our objective was to determine the prognostic value of the absence of PLR upon hospital admission in patients with out-of-hospital cardiac arrest. METHODS: We prospectively included all out-of-hospital cardiac arrests occurring between July 2011 and July 2017 treated by a mobile medical team (MMT) based on data from a French cardiac arrest registry database. PLR was evaluated upon hospital admission and the outcome on day 30. The prognosis was classified as good for Cerebral Performance Category (CPC) 1 or 2, and poor for CPC 3-5 or in case of death. RESULTS: Data from 10151 patients was analysed. The sensitivity and specificity of the absence of PLR for a poor outcome were 72.2% (71.2-73.2) and 68.8% (66.7-70.1), respectively. We identified several variables modifying the sensitivity values and the false positive fraction of a factor, ranging from 0.49 (0.35-0.69) for the Glasgow Coma Scale to 2.17 (1.09-2.48) for pupillary asymmetry. Among those living with CPC 1 or 2 on day 30 (n = 1990; 19.6%), 621 (31.2% (29.2-33.3)) had no PLR upon hospital admission. In the multivariate analysis, loss of PLR was associated with a poor outcome (OR = 3.1 (2.7-3.5)). CONCLUSIONS: Loss of pupillary light reactivity upon hospital admission is predictive of a poor outcome after out-of-hospital cardiac arrest. However, it does not have sufficient accuracy to determine prognosis and decision making.
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