operation
a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
recalled by Codex without web access - no source was read
Researched by: Codex
Purpose and description
Enable an AI agent to recognise a surgical operation, record its intended repair or disease-control purpose and current state, and identify decisions that require clinical authority.
An operation, in the specified surgical sense, is a medical intervention involving incision and instrumental manipulation of living tissues to repair damage, remove or modify diseased tissue, or arrest disease.
It can be Classify a documented intervention against the registry's surgical sense and flag unresolved boundary cases.; Assemble a traceable view of the operative target, purpose, approach and responsible clinical team.; Compare planned, authorised and performed scope and route discrepancies for clinical review.; Track preparation evidence, unresolved prerequisites and decisions by authorised clinicians.; Record operative changes, tissue or device dispositions and immediate handover requirements.; Identify missing evidence and unanswered outcome questions without independently authorising or directing surgery..
Distinguishing features
The referent is a medical intervention on a living body, rather than an abstract operation or a postmortem dissection.
The planned or performed intervention includes an incision made with instruments; a generic procedure label alone does not establish this.
Its stated purpose includes repairing damage or arresting disease under this registry definition; purely diagnostic or cosmetic cases require a recorded boundary decision.
The operative action directly addresses a bodily target; anaesthesia, imaging or preparation alone does not constitute the operation.
It identifies a particular operative plan or event, with an accountable team and temporal boundary, rather than surgery in general.
Scope
+ The identity and boundaries of one planned or performed surgical operation
+ The operative target, indication and intended repair or disease-control result
+ Incisional access, operative approach and intended tissue changes
+ Operation-specific authorisation, preparation and accountable clinical roles
+ The operative course, completion state and immediate postoperative handover
- Mathematical, computing, military and business senses of operation
- Surgery as a discipline, profession or institutional service
- The underlying disease or injury as an independently modelled condition
- Anaesthesia management as a separate clinical process linked to the operation
- Standalone non-incisional treatments and diagnostic investigations
- Long-term rehabilitation and the patient's complete care history
Characteristics
- Procedure identity
- Recorded procedure name; terminology system, code and version when available Distinguishes the intervention from ambiguous labels and supports comparison between the plan and the performed procedure.
- Operated subject
- Link to the patient or other living subject record Anchors the operation to the correct subject without duplicating the clinical record.
- Operative target
- Anatomical structure, site, laterality and linked lesion where applicable Makes the intended location explicit and exposes discrepancies in operative documentation.
- Indication and intended result
- Linked damage or disease; documented repair or disease-control objective Explains why the operation is proposed and what result its completion should be assessed against.
- Operative approach
- Documented access route, incision and approach; planned and actual values recorded separately Establishes incisional scope and preserves changes made during execution.
- Urgency
- Treating service's urgency category with its definition and assignment time Records the clinical timing constraint without assuming urgency labels have universal meanings.
- Operation state
- Proposed, scheduled, deferred, cancelled, underway, completed or stopped before intended completion Prevents a plan, cancellation or partial execution from being mistaken for a completed operation.
- Authorisation status
- Documented consent or other stated authority, scope, unresolved conditions and responsible reviewer Records the basis for proceeding while leaving validity determinations to authorised people.
- Operative duration
- Minutes, with explicitly named start and end events Allows timing comparisons without conflating incision-to-closure time with time in the operating room.
- Objective attainment
- Not assessed, achieved, partly achieved, not achieved or uncertain; assessor and assessment time Separates procedural completion from achievement of the intended clinical result.
Analytical facets
- substance
- activity
- origin
- conceptual
- agency
- inert
- mobility
- not-applicable
- scale
- not-applicable
- affordances
- observable
Also called
+185
Where this came from
oewn:2024 · CC BY 4.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 6 bundles · 11 layers · 19 findings · 29 questions.
Operative identity and boundaries Establishes what intervention is being represented and what counts as one operation.
The word operation is highly ambiguous, and one operative session can contain several procedures.
Surgical sense
Tests the intervention against the registry's incisional and therapeutic definition.
Incisional therapeutic fit
Record evidence for intervention on a living body, incisional access and a repair or disease-control purpose; retain ambiguity explicitly.
- What documented incision and intended repair or disease-control action make this an operation under vr.tr.operation-3? definition
- Does the case involve a diagnostic, cosmetic or non-incisional purpose that makes its inclusion uncertain? boundary
Operative event boundary
Separates procedure types, planned instances, operative sessions and repeat interventions.
One operation or related operations
Record the chosen event boundary and links to component procedures, stages and returns to the operating room.
- Which procedures belong to this operation, and what convention establishes that grouping? boundary
- Is this a first intervention, a planned stage, a revision or an unplanned return linked to an earlier operation? provenance
Indication, target and intent Connects the reason for operating to a specific bodily target and intended result.
An operation cannot be interpreted from its procedure name alone; its purpose and anatomical scope determine what completion means.
Operative indication
Captures the documented problem and the clinical rationale for intervention.
Documented reason to operate
Link the operation to its recorded indication, uncertainty and timing rationale without generating a treatment recommendation.
- Which damage or disease is this operation intended to address, and which clinical assessment supports that indication? provenance
- What urgency and consequences of delay has the responsible clinician documented? action
Anatomical and therapeutic scope
Defines the intended site and bodily change.
Target and intended change
Record the anatomical target, laterality where relevant, intended tissue action and operation-specific success criteria.
- Which structure, site and side are targeted, and how are multiple targets distinguished? definition
- What observable result would demonstrate the intended repair or disease-control objective, and when can it be assessed? measurement
Authority and operative readiness Records who may decide, what scope is authorised and what preparation evidence is available.
A scheduled operation is not automatically authorised or ready to begin, and an agent must preserve those distinctions.
Authorised operative scope
Connects the proposed intervention to documented authority and accountable decision makers.
Authority and scope record
Capture the recorded authorisation basis, its limitations and the clinician responsible for resolving discrepancies.
- What consent or other stated authority covers this operation, and where are its scope and limitations recorded? provenance
- Who must resolve a mismatch between the planned operation and the documented authorised scope? action
Procedure-specific readiness
Tracks preparation requirements selected by the responsible clinical service.
Readiness evidence and unresolved conditions
Record applicable preparation checks, required resources and unresolved concerns without treating checklist presence as clinical clearance.
- Which patient, procedure and site confirmations and operation-specific resources does the treating service require, and what evidence records their status? provenance
- Which unresolved conditions require a documented clinician decision before proceeding? action
Operative course and material disposition Represents the intervention actually performed and the disposition of tissue and operative materials.
The performed operation can depart from its plan, and resulting tissue changes, specimens and devices affect subsequent care.
Performed intervention
Preserves actual access, operative actions and departures from the planned scope.
Actual course and deviations
Record the actual approach, significant operative observations, changes in scope and the documented reasons for those changes.
- What access and operative actions were actually performed, and which operative record establishes them? provenance
- Was the approach or scope changed, extended or stopped, and what reason and decision maker were recorded? action
Tissue, specimens and devices
Links bodily alterations and material dispositions to the operation.
Operative material accountability
Record what was removed, repaired, implanted or intentionally left in place, with links to specimen and device records where applicable.
- What tissue was removed or altered, and which specimen records preserve the source site and identification? provenance
- Which implants, drains, packing or other materials remain, and what follow-up responsibility is documented for each? action
Completion, outcomes and handover Separates the end of operative activity from objective attainment and ongoing care obligations.
An operation can end without achieving its objective, and clinically relevant consequences may remain unresolved at handover.
Completion and result
Captures the terminal operative state and the evidence available for judging its result.
Completion versus objective attainment
Record whether the intended intervention was completed and distinguish immediate observations from outcomes awaiting later assessment.
- Was the operation completed, partially performed or stopped, and which intended components remain undone? measurement
- Which evidence supports objective attainment, and which results remain pending or uncertain? measurement
Immediate care transfer
Connects the operative record to the receiving team's responsibilities.
Operative consequences and handover
Record reported adverse events, relevant operative consequences, pending results and clinician-issued follow-up instructions.
- What adverse events or unexpected observations were documented, and is any claimed relationship to the operation established or still under review? provenance
- What operation-specific instructions, pending results and escalation responsibilities were handed to which receiving team? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- This is recall-based content; no sources were consulted.
- The supplied sense is narrower than everyday surgical usage, which also includes diagnostic operations and some procedures without an incision.
- The listed kinds overlap: approach, urgency and therapeutic purpose are separate classification dimensions.
- Which of these check these first hold for the sense of operation this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- Open surgery
- Minimally invasive surgery
- Elective surgery
- Emergency surgery
- Reconstructive surgery
- Palliative surgery
- Which of these kinds and varieties hold for the sense of operation this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- SNOMED CT - Numeric concept identifiers for individual surgical procedures - Identifies procedure concepts; the appropriate concept depends on the operation performed.
- ICD-10-PCS - Seven-character alphanumeric procedure codes - Used for inpatient hospital procedure coding in the United States; codes distinguish features such as body part, operative approach and root operation.
- CPT - Five-digit Category I codes - American Medical Association terminology used in the United States to report medical services, including surgical procedures.
- Which of these identifiers and schemes hold for the sense of operation this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- World Health Organization Surgical Safety Checklist: safety checks before anaesthesia, before skin incision and before the patient leaves the operating room; guidance rather than universal legislation.
- World Health Organization Global Guidelines for the Prevention of Surgical Site Infection.
- ISO 7153-1, issued by the International Organization for Standardization: requirements concerning metals used in surgical instruments.
- Which of these standards and regulation hold for the sense of operation this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Repairing traumatic injuries and damaged anatomical structures.
- Removing tumours or other diseased tissue.
- Controlling bleeding or removing a source of infection.
- Relieving obstruction or restoring physiological function.
- Relieving symptoms when definitive cure is not achievable.
- Which of these real-world use hold for the sense of operation this model covers, and on what evidence? provenance
Typical measurements
Recalled without web access and unsourced; every item is a lead to verify.
- Operative duration - Procedure-dependent; no useful universal range. - minutes
- Estimated intraoperative blood loss - Procedure- and patient-dependent; no useful universal range. - mL
- Surgical site infection rate - Depends on procedure, patient risk and surveillance definition. - % of operations
- Which of these typical measurements hold for the sense of operation this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Haemorrhage and injury to adjacent organs, nerves or vessels.
- Surgical site infection.
- Anaesthetic complications, including respiratory or cardiovascular compromise.
- Wrong-patient, wrong-site or wrong-procedure surgery, and retained surgical items.
- Impaired healing, wound breakdown or failure to achieve the intended therapeutic result.
- Which of these failure modes and hazards hold for the sense of operation this model covers, and on what evidence? provenance
Regional variation
Recalled without web access and unsourced; every item is a lead to verify.
- Procedure coding differs across jurisdictions; United States systems include ICD-10-PCS and CPT, while other countries use different classifications.
- Consent requirements, professional credentialing and facility regulation depend on jurisdiction.
- Availability of specialist teams, anaesthesia, blood products and equipment affects which operations can be offered.
- Which of these regional variation hold for the sense of operation this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- Surgery - Can denote the clinical discipline or surgical treatment generally; an operation is an individual intervention.
- Medical procedure - The broader category includes interventions that require neither incision nor surgical tissue manipulation.
- Diagnostic biopsy - Primarily obtains tissue for diagnosis; an incisional biopsy overlaps surgical technique but falls outside a strictly therapeutic reading of the supplied sense.
- Endoscopy - May inspect a body cavity through a natural opening without incision; some endoscopic interventions also constitute operations.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of operation this model covers, and on what evidence? provenance
What the second pass must settle
- Does the existing Vercy catalogue already contain a world model for this surgical sense that should serve as its single source of truth?
- How should the registry's repair-or-disease-control definition handle incisional operations performed solely for diagnosis, cosmetic change, prevention or donation?
- Does this entry cover veterinary operations as well as human operations, given its reference to a living body?
- Which convention should distinguish one operation from multiple procedures during one anaesthetic session, staged surgery and repeat intervention?
- Which authoritative clinical terminology and perioperative documentation sources should ground the proposed categories, event boundaries and assessment criteria?