Evidence map›Paper›PMID 29423816›Full record

ArticleJournal of medical toxicology : official journal of the American College of Medical Toxicology2018

Anaphylactoid Reactions to Intravenous N-Acetylcysteine during Treatment for Acetaminophen Poisoning.

Mark Yarema, Puja Chopra, Marco L A Sivilotti, David Johnson, Alberto Nettel-Aguirre, Benoit Bailey, Charlemaigne Victorino, Sophie Gosselin, Roy Purssell, Margaret Thompson and 2 more

Erratum issuedOpen access · bronzeAbstract read
In one paragraph

Article in Journal of medical toxicology : official journal of the American College of Medical Toxicology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 30 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 2 pooled it
2.9field-weighted citation impact, top 10% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

30 citing papers in PubMed, 2 syntheses or guidelines pooled it, 57 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Unravelling the Therapeutic Potential of Cysteine for Cardiovascular Health.International journal of molecular sciences · 2026
    Review
  4. Review
  5. Article
  6. Redefining the role of the thiol-based agentRSC medicinal chemistry · 2026
    Review
  7. Article
  8. Review
  9. Review
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Review
  16. Advances in the Use ofAntioxidants (Basel, Switzerland) · 2023
    Review
  17. Article
  18. Article
  19. Aleppo galls alleviate paracetamol-induced hepatotoxicity and tissue damage: an experimental study.International journal of biochemistry and molecular biology · 2023
    Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 8 institutions in 2 countries.

Mark YaremaPoison and Drug Information Service, Foothills Medical Centre, 1403-29th St NW, Calgary, Alberta, T2N 2T9, Canada. mark.yarema@albertahealthservices.ca.ORCID http://orcid.org/0000-0001-8714-9956
Puja ChopraDepartment of Emergency Medicine, University of Calgary, Calgary, AB, Canada.
Marco L A SivilottiDepartments of Emergency Medicine, and of Biomedical and Molecular Sciences, Queen's University, Kingston, ON, Canada.
David JohnsonPoison and Drug Information Service, Foothills Medical Centre, 1403-29th St NW, Calgary, Alberta, T2N 2T9, Canada.
Alberto Nettel-AguirreDepartment of Pediatrics, University of Calgary, Calgary, AB, Canada.
Benoit BaileyDivision of Emergency Medicine, Department of Pediatrics, CHU Sainte Justine, Montréal, Quebec, Canada.
Charlemaigne VictorinoPrairie Regional Research Data Centre, Statistics Canada, Calgary, AB, Canada.
Sophie GosselinCentre Antipoison du Québec, Québec City, Québec, Canada.
Roy PurssellDepartment of Emergency Medicine, University of British Columbia, Vancouver, BC, Canada.
Margaret ThompsonOntario Poison Centre, Toronto, ON, Canada.
Daniel SpykerDepartment of Emergency Medicine, Oregon Health Sciences University, Portland, OR, USA.
Barry RumackDepartment of Pediatrics, University of Colorado School of Medicine, Denver, CO, USA.
University of Calgary · CAAlberta Health Services · CACentre Hospitalier Universitaire Sainte-Justine · CAOregon Health & Science University · USQueen's University · CAStatistics Canada · CAUniversity of British Columbia · CAUniversity of Colorado Denver · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAnaphylactoid reactions to intravenous (IV) N-acetylcysteine (NAC) are well-recognized adverse events during treatment for acetaminophen (APAP) poisoning. Uncertainty exists regarding their incidence, severity, risk factors, and management. We sought to determine the incidence, risk factors, and treatment of anaphylactoid reactions to IV NAC in a large, national cohort of patients admitted to hospital for acetaminophen overdose.

methodsThis retrospective medical record review included all patients initiated on the 21-h IV NAC protocol for acetaminophen poisoning in 34 Canadian hospitals between February 1980 and November 2005. The primary outcome was any anaphylactoid reaction, defined as cutaneous (urticaria, pruritus, angioedema) or systemic (hypotension, respiratory symptoms). We examined the incidence, severity and timing of these reactions, and their association with patient and overdose characteristics using multivariable analysis.

resultsAn anaphylactoid reaction was documented in 528 (8.2%) of 6455 treatment courses, of which 398 (75.4%) were cutaneous. Five hundred four (95.4%) reactions occurred during the first 5 h. Of 403 patients administered any medication for these reactions, 371 (92%) received an antihistamine. Being female (adjusted OR 1.24 [95%CI 1.08, 1.42]) and having taken a single, acute overdose (1.24 [95%CI 1.10, 1.39]) were each associated with more severe reactions, whereas higher serum APAP concentrations were associated with fewer reactions (0.79 [95%CI 0.68, 0.92]).

conclusionAnaphylactoid reactions to the 21-h IV NAC protocol were uncommon and involved primarily cutaneous symptoms. While the protective effects of higher APAP concentrations are of interest in understanding the pathophysiology, none of the associations identified are strong enough to substantially alter the threshold for NAC initiation.

Indexed as

AcetaminophenAcetylcysteineAdolescentAdultAgedAnalgesics, Non-NarcoticAnaphylaxisAntidotesCanadaCohort StudiesDrug OverdoseFemaleHistamine AntagonistsHumansIncidenceMaleAcetaminophenAcetylcysteineAnalgesics, Non-NarcoticAntidotesHistamine AntagonistsAcetaminophenAdverse drug eventN-acetylcysteineParacetamol

Identifiers

PMID29423816
PMCPMC5962465
OpenAlexW2790143687

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.