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  • Title: Designer benzodiazepines: a report of exposures recorded in the National Poison Data System, 2014-2017.
    Author: Carpenter JE, Murray BP, Dunkley C, Kazzi ZN, Gittinger MH.
    Journal: Clin Toxicol (Phila); 2019 Apr; 57(4):282-286. PubMed ID: 30430874.
    Abstract:
    IMPORTANCE: Exposures to novel psychoactive substances are reported with increasing frequency in both the medical literature and the lay press. While the majority of reports describe synthetic cannabinoids and cathinones, a lesser understood family is the "designer benzodiazepines". The current literature describing human exposures to these compounds is comprised of case reports and small case series. OBJECTIVE: The primary objectives of this study are to describe epidemiologic trends and clinical effects of designer benzodiazepine use. METHODS: Data regarding single agent exposures to designer benzodiazepines between 1 January 2014 and 31 December 2017 was obtained from the National Poison Data System. Substances queried include: adinazolam, clonazolam, cloniprazepam, diclazepam, etizolam, flubromazepam, flubromazolam, meclonazepam, nifoxipam, norflurazepam, and pyrazolam. Data was summarized descriptively. RESULTS: 234 single agent exposures in 40 states were reported during the study period. The annual number of exposures increased each year, from 26 in 2014 to 112 in 2017, amounting to a 330% increase. The most common exposures were etizolam (n = 162) and clonazolam (n = 50). The most common clinical effects were drowsiness/lethargy (65%), and slurred speech (17%). 3% required intubation, 36% of cases required hospital admission, 22% to the intensive care unit. There was 1 death in the study population. CONCLUSIONS: The incidence of exposures to designer benzodiazepines is rising. Clinical effects are generally consistent with a sedative-hypnotic toxidrome. Severe effects, including death, seemed relatively uncommon in the study population.
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