{ "model": { "rank": 3127, "code": "thing-q121041", "model_id": "vr.tr.appendicitis", "name": "appendicitis", "purpose": "Let an agent explain appendicitis in general terms, relay signs, diagnosis and treatment principles from surgical guidelines, identify warning signs that require emergency care, and route personal symptoms to emergency services and clinicians.", "family": "Thing Registry", "category": "Cross-cutting context", "status": "research-draft", "kind": "thing", "plane": "XCT", "domain": "XCT.STA", "industry": "", "version": "", "url": "/models/thing/q121041/", "tier": 2, "score": 90, "payload": { "layer": "wikidata", "aliases": [ "Amyand's hernia", "Lockwood's sign", "perityphlitic abscess", "appendicular infiltration", "chronic appendicitis" ], "aliasCount": 5, "merged": 5, "knownIn": 90, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q121041", "url": "https://www.wikidata.org/wiki/Q121041", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-12T23:20:25Z", "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": 3, "engine": "claude" }, "metaModel": { "id": "THING-Q121041", "registryId": "vr.tr.appendicitis", "name": "appendicitis", "version": "0.2.0-wave.3", "entryKind": "thing", "family": "Thing Registry", "domain": [ "XCT.STA" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q121041/", "model": { "registry_id": "vr.tr.appendicitis", "name": "appendicitis", "purpose": "Let an agent explain appendicitis in general terms, relay signs, diagnosis and treatment principles from surgical guidelines, identify warning signs that require emergency care, and route personal symptoms to emergency services and clinicians.", "definition": "Inflammation of the appendix, a small pouch attached to the large intestine, usually from obstruction and infection, causing abdominal pain that typically moves to the lower right, with nausea, fever and tenderness; appendicitis is a common surgical emergency treated by appendicectomy or, in selected cases, antibiotics, and complications include perforation and abscess, while rare presentations include the appendix within a hernia and disputed chronic forms.", "what_it_is_for": "Not applicable; a disease.", "affordances": [ "explain the condition and signs", "relay diagnosis and treatment principles", "identify emergency warning signs", "route personal symptoms to emergency care" ], "distinguishing_features": [ "Migrating right lower abdominal pain", "Surgical emergency", "Risk of perforation", "Imaging and clinical scores in diagnosis" ], "appearance": "Not a visible object; presentations include abdominal pain, tenderness and fever.", "visual_identification": [ "Inflamed appendix", "Acute surgical emergency", "Other causes of abdominal pain such as gastroenteritis and gynaecological conditions are distinguished clinically" ], "physical_properties": [ { "quantity": "lifetime risk", "typical_range": "about 7-8", "unit": "percent", "note": "estimates" }, { "quantity": "peak age", "typical_range": "about 10-30", "unit": "years", "note": "" } ], "families_and_kinds": [ "acute uncomplicated appendicitis", "complicated appendicitis with perforation or abscess, including perityphlitic abscess", "appendicular mass or infiltration", "appendicitis in pregnancy, children and older adults", "rare presentations such as appendicitis within an inguinal hernia", "disputed chronic or recurrent appendicitis" ], "related_models": [ { "relation": "is a kind of", "target": "appendix disease", "why": "in registry terms" }, { "relation": "is a kind of", "target": "intraabdominal infection", "why": "in registry terms" }, { "relation": "is treated by", "target": "appendectomy", "why": "the standard operation" }, { "relation": "affects", "target": "vermiform appendix", "why": "the organ" } ], "identifiers": [ { "scheme": "ICD-10", "value_or_pattern": "K35-K37", "note": "appendicitis" }, { "scheme": "ICD-11", "value_or_pattern": "DB10", "note": "" } ], "standards_and_regulation": [ "Surgical society guidelines on appendicitis", "Emergency care standards", "Antibiotic stewardship guidance" ], "failure_modes_and_hazards": [ "Perforation and sepsis from delayed treatment", "Misdiagnosis in atypical presentations", "Agents giving personal medical advice instead of routing to emergency care" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "understand", "name": "Understand", "description": "What appendicitis is.", "rationale": "General information.", "layers": [ { "id": "definition", "name": "Definition", "description": "Definition and signs.", "findings": [ { "id": "definition-finding", "name": "Definition", "description": "Definition.", "questions": [ { "text": "What is appendicitis, and what signs does it cause?", "kind": "definition" }, { "text": "Is the user describing acute abdominal pain now, which needs emergency care?", "kind": "boundary" } ] } ] }, { "id": "causes", "name": "Causes", "description": "Causes and risk.", "findings": [ { "id": "causes-finding", "name": "Causes", "description": "Causes.", "questions": [ { "text": "What causes appendicitis, and who is most affected?", "kind": "definition" }, { "text": "Which entry fits the appendix?", "kind": "action" } ] } ] } ] }, { "id": "clinical", "name": "Clinical", "description": "Diagnosis and treatment.", "rationale": "Clinical.", "layers": [ { "id": "diagnosis", "name": "Diagnosis", "description": "Diagnosis.", "findings": [ { "id": "diagnosis-finding", "name": "Diagnosis", "description": "Diagnosis.", "questions": [ { "text": "How is appendicitis diagnosed, using examination, scores and imaging?", "kind": "provenance" }, { "text": "Is the presentation free of personal medical advice?", "kind": "boundary" } ] } ] }, { "id": "treatment", "name": "Treatment", "description": "Treatment principles.", "findings": [ { "id": "treatment-finding", "name": "Treatment", "description": "Treatment.", "questions": [ { "text": "What do guidelines say about surgery versus antibiotics, in general terms?", "kind": "provenance" }, { "text": "Which references are standard?", "kind": "provenance" } ] } ] } ] }, { "id": "special", "name": "Special", "description": "Complications and special cases.", "rationale": "Clinical.", "layers": [ { "id": "complications", "name": "Complications", "description": "Complications.", "findings": [ { "id": "complications-finding", "name": "Complications", "description": "Complications.", "questions": [ { "text": "What are perforation, abscess and appendicular mass, and how are they managed?", "kind": "provenance" }, { "text": "Which entry fits peritonitis?", "kind": "action" } ] } ] }, { "id": "groups", "name": "Groups", "description": "Special groups.", "findings": [ { "id": "groups-finding", "name": "Groups", "description": "Groups.", "questions": [ { "text": "How does appendicitis present and get managed in pregnancy, children and older adults?", "kind": "provenance" }, { "text": "Which entry fits the specific group?", "kind": "action" } ] } ] } ] }, { "id": "context", "name": "Context", "description": "Burden and history.", "rationale": "Context.", "layers": [ { "id": "burden", "name": "Burden", "description": "Burden.", "findings": [ { "id": "burden-finding", "name": "Burden", "description": "Burden.", "questions": [ { "text": "What do studies report about incidence and outcomes, with sources?", "kind": "measurement" }, { "text": "Which sources are cited?", "kind": "provenance" } ] } ] }, { "id": "history", "name": "History", "description": "History.", "findings": [ { "id": "history-finding", "name": "History", "description": "History.", "questions": [ { "text": "How was appendicitis recognised and how did appendicectomy develop?", "kind": "provenance" }, { "text": "Which entry fits the history of surgery?", "kind": "action" } ] } ] } ] } ] }, "openQuestions": [ "Should appendectomy be the linked primary entry?", "How should guidelines be linked?", "The registry entry has merged aliases naming signs and rare presentations; should they be split off?" ], "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 appendicitis, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent explain appendicitis in general terms, relay signs, diagnosis and treatment principles from surgical guidelines, identify warning signs that require emergency care, and route personal symptoms to emergency services and clinicians.", "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: Amyand's hernia, Lockwood's sign, perityphlitic abscess, appendicular infiltration, chronic appendicitis.", "5 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 90 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 appendicitis, 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": [ "Amyand's hernia", "Lockwood's sign", "perityphlitic abscess", "appendicular infiltration", "chronic appendicitis" ] } ], "standing": "Described in 90 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 5 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 appendicitis from another, and a appendicitis 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 appendicitis, 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 appendicitis, 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 appendicitis 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 appendicitis, 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 appendicitis, 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 appendicitis 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 appendicitis 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 appendicitis, 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 appendicitis, 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 appendicitis 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 appendicitis from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a appendicitis, 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 appendicitis, 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 appendicitis 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 appendicitis 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 appendicitis between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a appendicitis, 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 appendicitis, 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 appendicitis 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 appendicitis, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a appendicitis 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 appendicitis, 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 appendicitis, 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 appendicitis 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 appendicitis 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 appendicitis, 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 appendicitis, 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 appendicitis 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 appendicitis 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 appendicitis, 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 appendicitis 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 appendicitis and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a appendicitis, 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 appendicitis, 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 appendicitis 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 appendicitis is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a appendicitis, 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 appendicitis, 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 appendicitis 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 } } } }