Abstract

IntroductionPolyethylene glycol electrolyte lavage solution (PEG-ELS) is similar to pharmaceutical solvent propylene glycol and used following acute poisonings for whole bowel irrigation (e.g., “body stuffing”). This raises concern of PEG-ELS increasing solubility following acute ingestions of non-sustained release xenobiotics in the stomach. We theorized PEG-ELS increases solubility of acetaminophen in an in vitro stomach model. Material and methodsAn in vitro artificial stomach with 500 mL simulated gastric fluid and either 500 mL of sodium chloride 0.9% (group A) or 500 mL of PEG-ELS (group B). Ten non-sustained release acetaminophen tablets added with concentrations 0, 15, 45 and 90 min in triplicate. Mean concentrations and mean area under the curve (AUC) (mg-min/L to 90 min). ResultsIn control group A (normal saline + simulated gastric fluid) mean acetaminophen concentrations 0, 3, 13 and 36 mg/L at 0, 15, 45 and 90 min, respectively. In group B (PEG-ELS + simulated gastric fluid) mean acetaminophen concentrations 0, 34, 109 and 136 mg/L at 0, 15, 45 and 90 min, respectively (p < 0.05). Mean AUC 0-90 1385 [95% C.I. 990.5–1779] mg-min/L in control group A compared to mean AUC 0-90 in group B (PEG-ELS) 7673 mg-min/L [95% C.I. 4832–10513] (p < 0.05). DiscussionGroup B (PEG-ELS) with significantly higher mean acetaminophen concentrations and greater mean AUC compared to control group A (normal saline). ConclusionWe demonstrated increased mean acetaminophen concentrations and increased mean AUC of following exposure of PEG-ELS in an artificial stomach model.

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