Delta values as a prognostic marker in methanol poisoning: a retrospective cohort study

Year 2023, Volume: 48 Issue: 1, 46 - 53, 31.03.2023

Murat Duyan , Ali Sarıdaş , Nafis Vural

https://doi.org/10.17826/cumj.1173429

Abstract

Purpose: The aim of the study was to evaluate the mortality prediction performances of delta bicarbonate, delta anion gap, and delta ratio in methanol poisoning (MP) cases.
Materials and Methods: This clinical study, which followed a cross-sectional study design, involved patients with MP who were still alive when they initially arrived at the emergency department of a tertiary care hospital. Patients were divided into two groups mortality and non-mortality. Patients who died during treatment and follow-up were assigned to the mortality group, while others were assigned to the non-mortality group. Receiver Operating Characteristic (ROC) analysis was used to determine the cut-off in the diagnostic value measurements of biomarkers predicting mortality.
Results: Nine (20%) of the 45 patients in the study died during their follow-up. The two groups showed a significant difference in the averages of pH, bicarbonate (HCO3-), lactate, anion gap, delta anion gap, delta HCO3-, and delta ratio, but not in the averages of partial carbon dioxide pressure (pCO2). In predicting mortality, pH, anion gap, and delta anion gap were found to have outstanding diagnostic power (AUC>0.9), while HCO3-, delta HCO3-, delta ratio were found to have acceptable diagnostic power (AUC: 0.7-0.8).
Conclusion: Delta anion gap, delta bicarbonate, and delta ratio can be used as prognostic factors in predicting mortality in MP cases.

Keywords

Methanol poisoning, delta ratio, delta anion gap, delta bicarbonate, mortality

Supporting Institution

The authors declare no conflict of interest or any financial support.

Project Number

The authors declare no any financial support.

Metanol zehirlenmesinde prognoz belirteci olarak delta değerleri: retrospektif kohort çalışması

Abstract

Amaç: Çalışmanın amacı metanol zehirlenmesi (MZ) vakalarında delta bikarbonat, delta anyon açığı ve delta oranının mortalite tahmin performanslarını değerlendirmektir.
Gereç ve Yöntem: Kesitsel bir çalışma tasarımına göre yapılan bu klinik çalışma, üçüncü basamak bir hastanenin acil servisine ilk geldiklerinde hala hayatta olan MZ'li hastaları içeriyordu. Hastalar ölenler ve sağ kalanlar olarak iki gruba ayrıldı. Tedavi ve takip sırasında ölen hastalar mortalite grubuna, diğerleri non-mortalite grubuna alındı. Mortaliteyi öngören biyobelirteçlerin tanısal değer ölçümlerinde eşik değeri belirlemek için Alıcı İşlem Karakteristiği (ROC) analizi kullanıldı.
Bulgular: Çalışmadaki 45 hastanın dokuzu (%20) takipleri sırasında öldü. İki grup, pH, bikarbonat (HCO3-), laktat, anyon açığı, delta anyon açığı, delta HCO3- ve delta oranı ortalamalarında önemli bir fark gösterdi, ancak kısmi karbondioksit basıncının (pCO2) ortalamalarında göstermedi. Mortaliteyi tahmin etmede pH, anyon açığı, delta anyon açığı üstün tanısal güce sahipken (AUC>0.9), HCO3-, delta HCO3-, delta oranının kabul edilebilir tanı gücüne sahip olduğu (AUC: 0.7-0.8) bulundu.
Sonuç: Delta anyon açığı, delta bikarbonat ve delta oranı MZ olgularında mortaliteyi öngörmede prognostik faktörler olarak kullanılabilir.

Keywords

Metanol zehirlenmesi, delta oranı, delta anyon açığı, delta bikarbonat, mortalite

Project Number

The authors declare no any financial support.

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