Clinical relevance of ethanol coingestion in patients with GHB/GBL intoxication.

Galicia, Miguel; Dargan, Paul I; Dines, Alison M; Yates, Christopher; Heyerdahl, Fridtjof; Hovda, Knut Erik; Giraudon, Isabella; Wood, David M; Miró, Òscar (2019). Clinical relevance of ethanol coingestion in patients with GHB/GBL intoxication. Toxicology letters, 314, pp. 37-42. Elsevier 10.1016/j.toxlet.2019.07.001

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OBJECTIVE

Ethanol intake can increase the sedative effects of gamma-hydroxybutyrate/gamma-butyrolactone (GHB/GBL), although the real clinical impact is unknown. We studied the clinical impact of the co-ingestion of ethanol in patients presenting to the Emergency Department (ED) with acute toxicity related to GHB/GBL use.

METHOD

We performed a secondary analysis of the Euro-DEN Plus Registry (14 countries, 22 EDs) which includes 17,371 consecutive patients presenting to the ED with acute recreational drug toxicity over 39 consecutive months (October 2013 - December 2016). We compared the epidemiological and clinical characteristics and ED management of patients identified as presenting with acute toxicity related to lone GHB/GBL (Group A) or GHB/GBL combined with ethanol (Group B) without other concomitant drugs.

RESULTS

A total of 609 patients were included (age 32 (8) years; 116 women (19%); Group A: 183 patients and Group B: 426). The most common features were reduction in consciousness (defined as Glasgow Coma Score <13 points: 56.1%) and agitation/aggressiveness (33.6%). Those with ethanol co-ingestion were younger patients (Group A/B: 31.5/33.1 years, p = 0.029) and ethanol co-ingestion was associated with a lower frequency of bradycardia (23.5%/15.7%, p = 0.027) and more frequent arrival at the ED by ambulance (68.3/86.6%; p < 0.001), reduction in consciousness (58.9%/49.1%; p = 0.031), need for treatment in the ED (49.2%/60.4%; p = 0.011), use of sedatives (20.1%/12.8%; p = 0.034), admission to critical care units (22.4%/55.3%; p < 0.001), and longer hospital stay (stay longer than 6 h: 16.9%/28.4%; p = 0.003).

CONCLUSIONS

Co-ingestion of ethanol increases the adverse effects of patients intoxicated by GHB/GBL, leading to greater depression of consciousness, need for treatment, admission to the ICU and longer hospital stay.

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