{ "model": { "rank": 8207, "code": "thing-q753904", "model_id": "vr.tr.rheumatic-fever", "name": "rheumatic fever", "purpose": "Let an agent explain rheumatic fever in general terms, relay cause, features, the link to strep throat, prevention and rheumatic heart disease from medical sources, route sore throat and cardiac symptoms, and distinguish rheumatic fever from rheumatoid arthritis, reactive arthritis, other causes of carditis and scarlet fever, without diagnosing individuals.", "family": "Thing Registry", "category": "Cross-cutting context", "status": "research-draft", "kind": "thing", "plane": "XCT", "domain": "XCT.STA", "industry": "", "version": "", "url": "/models/thing/q753904/", "tier": 2, "score": 52, "payload": { "layer": "wikidata", "aliases": [ "rheumatic congestive heart failure" ], "aliasCount": 1, "merged": 1, "knownIn": 52, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": "vr.tr.rheumatic-fever", "source": { "dataset": "wikidata", "item": "Q753904", "url": "https://www.wikidata.org/wiki/Q753904", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-14T02:27:14Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 4, "engine": "claude" }, "metaModel": { "id": "THING-Q753904", "registryId": "vr.tr.rheumatic-fever", "name": "rheumatic fever", "version": "0.2.0-wave.4", "entryKind": "thing", "family": "Thing Registry", "domain": [ "XCT.STA" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q753904/", "model": { "registry_id": "vr.tr.rheumatic-fever", "name": "rheumatic fever", "purpose": "Let an agent explain rheumatic fever in general terms, relay cause, features, the link to strep throat, prevention and rheumatic heart disease from medical sources, route sore throat and cardiac symptoms, and distinguish rheumatic fever from rheumatoid arthritis, reactive arthritis, other causes of carditis and scarlet fever, without diagnosing individuals.", "definition": "An inflammatory disease that can develop weeks after an untreated or inadequately treated throat infection with group A streptococcus, in which the immune response attacks the joints, heart, skin and brain, causing fever, arthritis, carditis, a rash and, in some, Sydenham chorea; repeated episodes can cause rheumatic heart disease with permanent valve damage, as the registry alias rheumatic congestive heart failure reflects. Rheumatic fever is now rare in high-income countries but remains common in some regions, and it is largely preventable by promptly treating strep throat with antibiotics, so sore throats with fever should be assessed, and diagnosed cases need long-term follow-up.", "what_it_is_for": "Not applicable; a post-infectious inflammatory disease.", "affordances": [ "explain cause and features", "relay the strep link and prevention", "relay rheumatic heart disease", "route symptoms" ], "distinguishing_features": [ "Follows strep throat", "Immune-mediated", "Affects heart and joints", "Preventable with antibiotics" ], "appearance": "Not visible directly; features include joint swelling, rash, nodules and heart involvement.", "visual_identification": [ "Inflammatory disease after strep throat", "Rheumatic congestive heart failure", "Rheumatoid arthritis is autoimmune and chronic; reactive arthritis follows other infections; scarlet fever is the rash of strep infection; other carditis has other causes" ], "physical_properties": [ { "quantity": "trigger", "typical_range": "group A streptococcal throat infection", "unit": "note", "note": "" }, { "quantity": "Jones criteria", "typical_range": "used for diagnosis", "unit": "note", "note": "" }, { "quantity": "registry parent", "typical_range": "bacterial infectious disease", "unit": "note", "note": "post-infectious" } ], "families_and_kinds": [ "acute rheumatic fever", "recurrent rheumatic fever", "rheumatic heart disease", "Sydenham chorea" ], "related_models": [ { "relation": "is a kind of", "target": "post-infectious disease", "why": "related" }, { "relation": "follows", "target": "streptococcal pharyngitis", "why": "" }, { "relation": "can cause", "target": "rheumatic heart disease", "why": "" }, { "relation": "is contrasted with", "target": "rheumatoid arthritis", "why": "" } ], "identifiers": [], "standards_and_regulation": [ "WHO and cardiology guidelines on rheumatic fever and heart disease", "Secondary prophylaxis with penicillin" ], "failure_modes_and_hazards": [ "Permanent heart valve damage", "Missing strep throat treatment", "Confusing with rheumatoid arthritis" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "understand", "name": "Understand", "description": "What rheumatic fever is.", "rationale": "Science.", "layers": [ { "id": "definition", "name": "Definition", "description": "Definition.", "findings": [ { "id": "definition-finding", "name": "Definition", "description": "Definition.", "questions": [ { "text": "Is there a sore throat with fever, or joint pain, breathlessness or abnormal movements after a throat infection, in which case seek medical assessment?", "kind": "boundary" }, { "text": "What is rheumatic fever, and how does it differ from rheumatoid arthritis, reactive arthritis, other carditis and scarlet fever?", "kind": "definition" } ] } ] }, { "id": "features", "name": "Features", "description": "Features.", "findings": [ { "id": "features-finding", "name": "Features", "description": "Features.", "questions": [ { "text": "What are the main features and the Jones criteria?", "kind": "definition" }, { "text": "Which entry fits Sydenham chorea?", "kind": "action" } ] } ] } ] }, { "id": "cause", "name": "Cause", "description": "Cause.", "rationale": "Science.", "layers": [ { "id": "strep", "name": "Strep", "description": "Streptococcal link.", "findings": [ { "id": "strep-finding", "name": "Strep", "description": "Strep.", "questions": [ { "text": "How does strep throat trigger rheumatic fever?", "kind": "provenance" }, { "text": "Which references are standard?", "kind": "provenance" } ] } ] }, { "id": "immune", "name": "Immune", "description": "Immune mechanism.", "findings": [ { "id": "immune-finding", "name": "Immune", "description": "Immune.", "questions": [ { "text": "How does molecular mimicry cause tissue damage?", "kind": "provenance" }, { "text": "Which sources are cited?", "kind": "provenance" } ] } ] } ] }, { "id": "prevention", "name": "Prevention", "description": "Prevention.", "rationale": "Regulation.", "layers": [ { "id": "primary", "name": "Primary", "description": "Treating strep throat.", "findings": [ { "id": "primary-finding", "name": "Primary", "description": "Primary.", "questions": [ { "text": "How does treating strep throat prevent rheumatic fever?", "kind": "provenance" }, { "text": "Which entry fits streptococcal pharyngitis?", "kind": "action" } ] } ] }, { "id": "secondary", "name": "Secondary", "description": "Prophylaxis.", "findings": [ { "id": "secondary-finding", "name": "Secondary", "description": "Secondary.", "questions": [ { "text": "Why is long-term penicillin prophylaxis used after an episode?", "kind": "provenance" }, { "text": "Is the information current?", "kind": "boundary" } ] } ] } ] }, { "id": "context", "name": "Context", "description": "Heart disease.", "rationale": "Attribution.", "layers": [ { "id": "rhd", "name": "RHD", "description": "Rheumatic heart disease.", "findings": [ { "id": "rhd-finding", "name": "RHD", "description": "RHD.", "questions": [ { "text": "How does rheumatic heart disease damage heart valves?", "kind": "provenance" }, { "text": "Which entry fits rheumatic heart disease?", "kind": "action" } ] } ] }, { "id": "disparities", "name": "Disparities", "description": "Global disparities.", "findings": [ { "id": "disparities-finding", "name": "Disparities", "description": "Disparities.", "questions": [ { "text": "Why does rheumatic fever remain common in some regions, as WHO reports?", "kind": "provenance" }, { "text": "Is the presentation neutral and attributed?", "kind": "boundary" } ] } ] } ] } ] }, "openQuestions": [ "Should rheumatic heart disease be a separate entry?", "How should prophylaxis guidelines be linked?", "How should global disparities be attributed?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "disease or condition", "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.", "facetsInferred": true, "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.", "purpose": "Give an agent a durable, checkable way to recognise a rheumatic fever, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent explain rheumatic fever in general terms, relay cause, features, the link to strep throat, prevention and rheumatic heart disease from medical sources, route sore throat and cardiac symptoms, and distinguish rheumatic fever from rheumatoid arthritis, reactive arthritis, other causes of carditis and scarlet fever, without diagnosing individuals.", "characteristics": { "substance": "abstract", "origin": "conceptual", "agency": "inert" }, "whatYouCanDoWithIt": [ "observed and measured" ], "distinguishingFeatures": [ "Names folded into this entry, which a task may need to split apart again: rheumatic congestive heart failure.", "1 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 52 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is." ], "openQuestionsForResearch": [ "Which of the bundles below does a real task actually need, and which are ceremony?", "What does this thing have that the facets do not capture at all?", "Which neighbouring kind is most often confused with a rheumatic fever, and on what evidence are they told apart?" ], "whatItIsMadeOf": "an abstraction with no physical instance", "physicalCharacter": [ "Does nothing on its own; everything it does, something else did to it.", "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing." ], "whatCanBeDoneWithIt": [ "observe it, measure it, record its state" ], "howItIsRecognised": [ "Recognised by criteria applied to signs and findings, not by appearance. Two conditions can look identical and be distinguished only by test." ], "relatedModels": [ { "relation": "covers", "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.", "targets": [ "rheumatic congestive heart failure" ] } ], "standing": "Described in 52 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 1 finer distinctions are held inside this entry as names rather than as separate models.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one rheumatic fever from another, and a rheumatic fever from things that resemble it.", "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.", "layers": [ { "id": "naming-and-identifiers", "name": "Names and identifiers", "description": "The names this thing goes by and the identifiers that survive translation and time.", "findings": [ { "id": "preferred-name-and-aliases", "name": "Preferred name, aliases and local names", "description": "Which name to use, which names mean the same thing, and which merely sound similar.", "questions": [ { "id": "preferred-name-and-aliases-q01", "text": "What identifies and describes the name of a rheumatic fever, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "preferred-name-and-aliases-q02", "text": "Who or what asserted this about the name of a rheumatic fever, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "preferred-name-and-aliases-q03", "text": "What may an agent decide or do once the name of a rheumatic fever is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "stable-identifiers", "name": "Stable identifiers and external keys", "description": "Identifiers that keep pointing at this kind of thing across systems and languages.", "questions": [ { "id": "stable-identifiers-q01", "text": "What identifies and describes an identifier for a rheumatic fever, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stable-identifiers-q02", "text": "Who or what asserted this about an identifier for a rheumatic fever, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stable-identifiers-q03", "text": "What may an agent decide or do once an identifier for a rheumatic fever is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "classification-and-granularity", "name": "Classification and granularity", "description": "Where a rheumatic fever sits among kinds, and how finely a task needs to cut it.", "findings": [ { "id": "kind-and-parents", "name": "Kind, parents and neighbouring kinds", "description": "The classes this thing belongs to and the ones it is next to.", "questions": [ { "id": "kind-and-parents-q01", "text": "What identifies and describes the kind of a rheumatic fever, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "kind-and-parents-q02", "text": "Who or what asserted this about the kind of a rheumatic fever, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "kind-and-parents-q03", "text": "What may an agent decide or do once the kind of a rheumatic fever is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "distinguishing-features", "name": "Distinguishing features", "description": "What separates a rheumatic fever from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a rheumatic fever, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "distinguishing-features-q02", "text": "Who or what asserted this about what distinguishes a rheumatic fever, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "distinguishing-features-q03", "text": "What may an agent decide or do once what distinguishes a rheumatic fever is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "state-and-lifecycle", "name": "State and lifecycle", "description": "The states a rheumatic fever passes through and the events that move it between them.", "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.", "layers": [ { "id": "lifecycle-stages", "name": "Lifecycle stages", "description": "From coming into existence to ceasing to be one of these.", "findings": [ { "id": "stages-and-transitions", "name": "Stages and transitions", "description": "The stages worth naming and what moves a rheumatic fever between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a rheumatic fever, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stages-and-transitions-q02", "text": "Who or what asserted this about the lifecycle of a rheumatic fever, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stages-and-transitions-q03", "text": "What may an agent decide or do once the lifecycle of a rheumatic fever is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "observations-and-status", "name": "Observations and current status", "description": "What is observed about a rheumatic fever, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a rheumatic fever is recorded so that it can be superseded rather than overwritten.", "questions": [ { "id": "observation-record-q01", "text": "What identifies and describes an observation of a rheumatic fever, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "observation-record-q02", "text": "Who or what asserted this about an observation of a rheumatic fever, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "observation-record-q03", "text": "What may an agent decide or do once an observation of a rheumatic fever is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "diagnosis-and-criteria", "name": "Diagnosis, criteria and coding", "description": "What makes a case of rheumatic fever a case, and under which revision.", "rationale": "Criteria change between revisions, so a diagnosis without its coding revision cannot be compared with a later one.", "layers": [ { "id": "criteria", "name": "Diagnostic criteria", "description": "The criteria in force and who issues them.", "findings": [ { "id": "criteria-record", "name": "Criteria, issuer and revision", "description": "What must be true for a diagnosis, according to whom.", "questions": [ { "id": "criteria-record-q01", "text": "What criteria define rheumatic fever, issued by which body, in which revision?", "kind": "definition" }, { "id": "criteria-record-q02", "text": "What changed between revisions that would reclassify existing cases?", "kind": "boundary" } ] } ] }, { "id": "coding", "name": "Coding and terminology", "description": "The codes used to record it and their mapping.", "findings": [ { "id": "coding-record", "name": "Codes and mappings", "description": "Which classification codes apply and how they map.", "questions": [ { "id": "coding-record-q01", "text": "Which classification and terminology codes cover rheumatic fever, and how do they map to each other?", "kind": "definition" }, { "id": "coding-record-q02", "text": "What is lost when a case is mapped from one scheme to another?", "kind": "boundary" } ] } ] } ] }, { "id": "course-and-population", "name": "Course, population and care", "description": "How rheumatic fever develops, whom it affects, and what is done about it.", "rationale": "The condition, the diagnosis and the episode of care are three different things, and an agent must not merge them.", "layers": [ { "id": "course", "name": "Course and stages", "description": "Onset, progression, remission and outcome.", "findings": [ { "id": "course-record", "name": "Stages and transitions", "description": "The stages recorded and what moves a case between them.", "questions": [ { "id": "course-record-q01", "text": "What course does rheumatic fever typically take, and what marks each stage?", "kind": "definition" }, { "id": "course-record-q02", "text": "What separates the condition itself from an episode of care for it?", "kind": "boundary" } ] } ] }, { "id": "population", "name": "Affected populations", "description": "Who is affected, how often, and on what evidence.", "findings": [ { "id": "epidemiology", "name": "Prevalence and its basis", "description": "Rates with their population, period and source.", "questions": [ { "id": "epidemiology-q01", "text": "What prevalence or incidence is reported for rheumatic fever, in which population and period?", "kind": "measurement" }, { "id": "epidemiology-q02", "text": "What may an agent not conclude about an individual from a population rate?", "kind": "action" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a rheumatic fever came from and when it held.", "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.", "layers": [ { "id": "source-and-authority", "name": "Source and authority", "description": "Who said it, on what evidence, and how strongly.", "findings": [ { "id": "claim-provenance", "name": "Claim provenance and confidence", "description": "The authority behind each claim about a rheumatic fever and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a rheumatic fever, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "claim-provenance-q02", "text": "Who or what asserted this about a claim about a rheumatic fever, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "claim-provenance-q03", "text": "What may an agent decide or do once a claim about a rheumatic fever is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "time-and-versions", "name": "Time, versions and supersession", "description": "When a claim was true, when it was learnt, and what replaced it.", "findings": [ { "id": "validity-and-supersession", "name": "Validity period and supersession", "description": "How an old claim about a rheumatic fever is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a rheumatic fever, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "validity-and-supersession-q02", "text": "Who or what asserted this about the validity of a claim about a rheumatic fever, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "validity-and-supersession-q03", "text": "What may an agent decide or do once the validity of a claim about a rheumatic fever is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 5, "layers": 10, "findings": 12, "questions": 32 } } } }