Component
The Rumack-Matthew nomogram relating serum concentration and time to hepatotoxicity risk
The Rumack-Matthew nomogram relating serum concentration and time to hepatotoxicity risk. Species, exposure and limitations are retained in each linked claim.
1 recorded relationships. Experimental role, claim status and evidence remain attached to each record.
How nutrients influence it
Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.
Other things that act on it
Enzymes, hormones, genes, and other components with a recorded effect. These are not nutrients, so they do not count toward the arrows above. Each finding names the chapter that recorded it.
How nutrients reach it in more than one step
Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.
Tracing routes…
What it does
Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.
Where it participates (unsigned role)
Acetaminophen overdose is the leading cause of acute liver failure in Canada and around the world with approximately 4,500 hospitalisations each year in Canada and about 6% of those hospitalised developing liver injury including acute liver failure that may require transplant or lead to death, and on the Rumack-Matthew nomogram derived from patients not treated with antidote a serum concentration above 200 milligrams per litre at 4 hours carries a 60% incidence of severe hepatotoxicity and 5% mortality rising to 90% and 24% at 300 milligrams per litre, with treatment by N-acetylcysteine required above 140 milligrams per litre at 4 hours.
Experimental context and source evidence
- availability_state
- biomarker_context Imported condition classification; unverified.
- evidence_span
- {"source_cache": "artifacts/paracetamol-research/36191122.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "859db1958aeb26b75a34a32e4dd1c4713dc7db413717cefe62a3659856db7568", "start_char": 0, "end_char": 3325, "text_sha256": "859db1958aeb26b75a34a32e4dd1c4713dc7db413717cefe62a3659856db7568"}
- experimental_model
- Review of point-of-care testing and antidote guidance for acute overdose
- exposure
- Serum acetaminophen concentration interpreted against the Rumack-Matthew nomogram
- limitations
- A health-technology review rather than primary research. The nomogram figures it quotes are derived from patients not treated with antidote, which is stated.
- nutrient_topic
- Paracetamol research collection; topical membership is not evidence of a direct clinical effect, and the drug is recorded separately from the metabolites NAPQI and AM404. · Paracetamol
- organism
- Human
- plain_language
- Above a concentration that can be read off a chart, the liver fails in most people unless the antidote is given.
- primary_references
- [apap-p36191122] Point-of-Care Testing and N-Acetylcysteine for Acute Acetaminophen Overdose (2021). https://pubmed.ncbi.nlm.nih.gov/36191122/
- tissue_or_cell_type
- Liver
- trigger_kind
- biomarker_context Imported condition classification; unverified.
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Review of point-of-care testing and antidote guidance for acute overdose · source_derived_draft · unverified_draft
### apap-the-nomogram-and-the-antidote Acetaminophen overdose is the leading cause of acute liver failure in Canada and around the world with approximately 4,500 hospitalisations each year in Canada and about 6% of those hospitalised developing liver injury including acute liver failure that may require transplant or lead to death, and on the Rumack-Matthew nomogram derived from patients not treated with antidote a serum concentration above 200 milligrams per litre at 4 hours carries a 60% incidence of severe hepatotoxicity and 5% mortality rising to 90% and 24% at 300 milligrams per litre, with treatment by N-acetylcysteine required above 140 milligrams per litre at 4 hours. Condition category: biomarker_context nutrient_topic: Paracetamol research collection; topical membership is not evidence of a direct clinical effect, and the drug is recorded separately from the metabolites NAPQI and AM404. plain_language: Above a concentration that can be read off a chart, the liver fails in most people unless the antidote is given. organism: Human tissue_or_cell_type: Liver experimental_model: Review of point-of-care testing and antidote guidance for acute overdose limitations: A health-technology review rather than primary research. The nomogram figures it quotes are derived from patients not treated with antidote, which is stated. exposure: Serum acetaminophen concentration interpreted against the Rumack-Matthew nomogram evidence_span: {"source_cache": "artifacts/paracetamol-research/36191122.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "859db1958aeb26b75a34a32e4dd1c4713dc7db413717cefe62a3659856db7568", "start_char": 0, "end_char": 3325, "text_sha256": "859db1958aeb26b75a34a32e4dd1c4713dc7db413717cefe62a3659856db7568"} [apap-p36191122] Point-of-Care Testing and N-Acetylcysteine for Acute Acetaminophen Overdose (2021). https://pubmed.ncbi.nlm.nih.gov/36191122/
Complete structured claim and evidence
The events it takes part in
A mechanism often involves more than two components. These are the full events, with every participant and its role.
Situations it appears in
Low-supply and faulty-machinery situations recorded in the chapters where this component plays a part.
In the sources
Preserved passages that mention this component, quoted exactly. Open one to read it in context.
Open hypotheses
Proposed ideas that involve this component. They are labeled as hypotheses and do not change any recorded statement.
This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.