Please use this identifier to cite or link to this item: https://ahro.austin.org.au/austinjspui/handle/1/12412
Title: Reported ingested dose of paracetamol as a predictor of risk following paracetamol overdose.
Austin Authors: Leang, Y ;Taylor, D M;Dargan, Paul I;Wood, D M;Greene, Shaun L 
Affiliation: Austin Health, Heidelberg, Melbourne, Australia
Issue Date: 1-Oct-2014
Publication information: European Journal of Clinical Pharmacology 2014; 70(12): 1513-8
Abstract: To evaluate reported ingested dose of paracetamol as a risk assessment tool in acute paracetamol overdose.Data was retrospectively obtained from a clinical toxicology database linked to one Australian and two United Kingdom hospitals. Plasma paracetamol concentrations (PPCs) of adult patients presenting with acute single ingestion, non-staggered paracetamol deliberate self-poisoning between 2006 and 2012 were recorded and plotted on a treatment nomogram to determine accuracy of reported dose ingested as an indicator for antidotal treatment. PPC plotted on a treatment nomogram with a line intersecting a 4-h concentration of 100 mg/L [667 μmol/L] was considered an indication for antidotal treatment in the UK; the corresponding Australasian population utilised a line intersecting 150 mg/L [1000 μmol/L].Of 1246 patients, 65.7 % were female and 88 % were from the UK. Fifty-two percent of patients reporting ingestion of ≥8 g paracetamol had a PPC above the 100 mg/L treatment line; PPV 52 % [95 % confidence interval (CI) 49 %, 55 %], sensitivity 81 % [95 %CI 78 %, 85 %]. Forty-four of patients reporting percent ingestion of ≥10 g had a PPC above the 150 mg/L treatment line; PPV 44 % [95 % CI 41 %, 49 %], sensitivity 85 % [95 % CI 78 %, 89 %], 72 % of patients reporting ingestion of ≥16 g had a PPC above the 100 mg/L treatment line; PPV 72 % [95% CI 67 %, 77 %], sensitivity 50 % [95 % CI 45 %, 54 %]. Overall, there was moderate correlation (R = 0.58) between reported paracetamol dose ingested and extrapolated 4-h PPC.There is a positive correlation between reported ingested dose of paracetamol and subsequent chance of a PPC being above a defined treatment line; however, ingested dose of paracetamol alone is a poor risk assessment tool in accurately determining need for treatment with an antidote.
Gov't Doc #: 25270975
URI: http://ahro.austin.org.au/austinjspui/handle/1/12412
DOI: 10.1007/s00228-014-1756-0
URL: https://pubmed.ncbi.nlm.nih.gov/25270975
Type: Journal Article
Appears in Collections:Journal articles

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