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Irish Journal of Medical Science (1971 -)

Erschienen in:

25.07.2022 | Original Article

Adding eosinophil count to EMERALD rules predicts subarachnoid haemorrhage better in emergency department

verfasst von: Adem Kaya, Salim Satar, Muge Gulen, Selen Acehan, Kemal Alper Afser, Hakan Demirhindi

Erschienen in: Irish Journal of Medical Science (1971 -) | Ausgabe 3/2023

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Abstract

Background

Subarachnoid haemorrhage (SAH) clinical decision rules can provide successful results in the differential diagnosis of non-traumatic headache.

Aim

The aim of this study is to investigate whether a laboratory parameter that can be added to clinical decision-making rules can better predict subarachnoid haemorrhages in patients presenting to the emergency department with headache.

Methods

We conducted a retrospective cohort study between March 2017 and March 2019. Patients over the age of 18 who admitted to the emergency department with non-traumatic, acute headache last 14 days before admission and evaluated by imaging and laboratory studies were included in the study.

Results

A total of 867 patients were included and 141 of them had SAH. In detecting the SAH, Ottawa SAH rule sensitivity (85.1%), specificity (47.1%), positive predictive value (PPV) (23.8%) and negative predictive value (NPV) (94.2%), and for EMERALD SAH, rule sensitivity (96.4%), specificity (43.2%), PPV (24.8%) and NPV (98.4%). In the regression analysis, statistically significant result was obtained to exclude the diagnosis of SAH with the decrease in the eosinophil value (cutoff < 0.085 10^3/µL, OR: 0.011, 95% CI: 0.001–0.213, p = 0.003). When eosinophil value was added to EMERALD SAH rule, it provided a 100% of sensitivity, a 38.4% of specificity, a 24% of PPV and a 100% of NPV in detecting the SAH.

Conclusions

EMERALD SAH rule plus eosinophil, which offers 100% sensitivity and NPV for predicting SAH in adult non-traumatic headaches, may be recommended as a successful and practical decision rule for clinical use according to the Ottawa and EMERALD SAH rule.

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Titel: Adding eosinophil count to EMERALD rules predicts subarachnoid haemorrhage better in emergency department
verfasst von: Adem Kaya
Salim Satar
Muge Gulen
Selen Acehan
Kemal Alper Afser
Hakan Demirhindi
Publikationsdatum: 25.07.2022
Verlag: Springer International Publishing
Erschienen in: Irish Journal of Medical Science (1971 -) / Ausgabe 3/2023
Print ISSN: 0021-1265
Elektronische ISSN: 1863-4362
DOI: https://doi.org/10.1007/s11845-022-03106-7

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