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Copeptin levels in carbon monoxide poisoning
Güler Irem1, Yunsur Çevik2, Ahmet Turgut Keskin3
1Department of Emergency Medicine, Antalya Training and Research Hospital, Antalya, Turkey.
Turkish Journal of Medical Sciences
|April 21, 2017
Summary
Elevated copeptin levels in patients with carbon monoxide (CO) poisoning indicate potential neurological effects. This biomarker may aid in diagnosing CO poisoning severity.
Area of Science:
- Emergency Medicine
- Toxicology
- Biomarkers
Background:
- Carbon monoxide (CO) poisoning is a common emergency department presentation.
- Neurological sequelae are a significant concern in CO poisoning.
- Copeptin, a marker of arginine vasopressin, has not been extensively studied in CO poisoning.
Purpose of the Study:
- To measure copeptin levels in patients with CO poisoning.
- To explore the correlation between copeptin levels and neurological outcomes.
- To determine if copeptin can serve as a diagnostic marker for CO poisoning.
Main Methods:
- Prospective study of patients with CO poisoning (carboxyhemoglobin >10%).
- Copeptin levels measured at presentation (hour 0) and 4 hours post-presentation.
- Comparison of copeptin levels between CO-poisoned patients and a control group.
Main Results:
- CO-poisoned patients exhibited significantly higher median copeptin levels (0.63 ng/mL) compared to controls (0.34 ng/mL) at presentation (P < 0.000).
- Plasma copeptin levels at hour 0 were significantly elevated in patients with neurological effects (P < 0.001).
- A cut-off level of 0.345 ng/mL for plasma copeptin demonstrated 94.0% sensitivity and 60% specificity.
Conclusions:
- Blood copeptin levels are elevated in patients with CO poisoning.
- Copeptin levels correlate with neurological effects in CO poisoning.
- Copeptin shows potential as a biomarker for CO poisoning severity and diagnosis.