median cubital vein
Enable an AI agent to identify a median cubital vein, describe its individual anatomy and condition, and support an evidence-based assessment of its potential use for venous access.
Bundle → Layer → Finding → Questions Filled
6 bundles · 11 layers · 18 findings · 32 questions
Identity and venous connections Establish which anterior-elbow vessel is being represented and how it joins the local venous network.
Limb-specific identification
Bind anatomical identification to an individual, side and observed vessel segment.
Identified median cubital segment
Record the evidence supporting the name and retain a provisional identification when the course or junctions remain unresolved.
- Which individual, limb and traced segment does this identification refer to? boundary
- What observed course and junctions justify calling this segment the median cubital vein? definition
Junctions and tributaries
Describe actual venous connections without substituting a standard diagram for observation.
Traced connection map
Represent the median cubital segment separately from adjoining cephalic, basilic and median antebrachial segments; published observations document differing connections. [Anatomical study](https://pubmed.ncbi.nlm.nih.gov/23131916/)
- Which named vessels join the segment, and which junctions were directly traced? boundary
- What examination, image series or dissection supports each recorded connection? provenance
Presence and anatomical variation Represent missing, unresolved and atypically arranged median cubital veins.
Presence evidence
Distinguish observed presence from nonvisualization and adequately supported absence.
Presence versus nonvisualization
A vein not seen in one examination remains distinct from a vein shown to be absent.
- Was the median cubital vein identified, not visualized or judged absent? definition
- What anatomical coverage and observation conditions support that judgment? provenance
Variant description
Capture the observed arrangement before assigning a named classification.
Described venous pattern
Describe branching and connecting segments directly; retain the classification source when a pattern label is added.
- What arrangement is actually present, including any duplicated or unresolved connecting segments? boundary
- Which published classification, if any, defines the pattern label used here? provenance
Elbow topography and geometry Describe the vessel's course, dimensions and relationships to structures around the elbow.
Course, depth and caliber
Make the mapped segment and its measurements reproducible.
Conditioned geometric measurements
Record vessel depth, caliber and segment length with landmarks, limb position and measurement conditions.
- What are the lumen diameter, skin-to-vessel depth and mapped length at explicitly marked sites? measurement
- What elbow position, tourniquet state and probe pressure applied during measurement? provenance
Aponeurosis and neurovascular neighbors
Map surrounding structures instead of presuming a protective anatomical arrangement.
Observed aponeurotic relationship
Record whether the vein is superficial or deep to the bicipital aponeurosis; a deep-course variant has been documented. [Anatomical case report](https://pmc.ncbi.nlm.nih.gov/articles/PMC9205326/)
- What is the observed relationship between this segment and the bicipital aponeurosis? boundary
- Was that relationship directly demonstrated or inferred from expected anatomy? provenance
Arterial and nerve proximity
Record observed arterial and nerve relationships, with unresolved structures explicit; cutaneous nerve relationships vary between specimens. [Anatomical study](https://pubmed.ncbi.nlm.nih.gov/18428997/)
- Which arteries and nerves were identified near the assessed segment, and what separations were measured? measurement
- Which relevant structures could not be resolved by the examination method? boundary
Lumen, flow and local condition Represent the observed vessel state separately from anatomical identity.
Patency and flow observations
Keep lumen appearance, compressibility and flow evidence linked but distinct.
Supported patency assessment
Record the evidence and uncertainty behind an assessment of patency rather than translating one observation directly into a diagnosis.
- What lumen appearance, compressibility and flow findings were observed in this segment? measurement
- What assessment do these observations support, and what remains indeterminate? definition
Wall and surrounding tissue
Describe local abnormalities and distinguish intravascular findings from surrounding changes.
Localized abnormality record
Record observed wall changes, intraluminal material, tenderness, swelling or adjacent collections without assigning an unsupported cause.
- Is the observed abnormality within the lumen, in the vessel wall or in surrounding tissue? boundary
- What extent, appearance and observation time were recorded? measurement
- Does the finding require clinical review before this vessel is considered for access? action
Venous access assessment and follow-up Connect vessel-specific evidence to an intended access use and subsequent local observations.
Intended-use assessment
Summarize whether sufficient local evidence exists for a clinician to assess the proposed use.
Use-specific suitability
Tie any suitability judgment to the intended procedure, assessed segment, current observations and responsible clinician.
- For what intended use and precisely mapped segment is suitability being assessed? boundary
- What additional anatomical or condition evidence is needed before a clinician can decide? action
- Who made the assessment, when, and under which applicable clinical protocol? provenance
Access history and local response
Link documented interventions to observations of the same vessel and surrounding tissue.
Documented post-access change
Record puncture location and subsequent local findings while separating temporal association from established causation.
- What documented intervention involved this vessel, at which site and time? provenance
- What changes in symptoms, swelling, patency or surrounding tissue were observed afterward? measurement
- What follow-up or reassessment did the responsible clinician specify? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
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.
- Which of these check these first hold for the sense of median cubital vein this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these identifiers and schemes hold for the sense of median cubital vein this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these standards and regulation hold for the sense of median cubital vein this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these real-world use hold for the sense of median cubital vein 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.
- Which of these failure modes and hazards hold for the sense of median cubital vein this model covers, and on what evidence? provenance
Regional variation
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these regional variation hold for the sense of median cubital vein 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.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of median cubital vein this model covers, and on what evidence? provenance
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.OBJ
- Other names and narrower kinds
- right median cubital vein, left median cubital vein
What it is Filled
The median cubital vein is a variable superficial vein at the anterior elbow that typically connects the cephalic and basilic veins and lies superficial to the bicipital aponeurosis.
In scope
- Identification of the median cubital vein in a specified individual and limb
- Course and connections within the superficial venous network at the elbow
- Presence, absence and anatomical variants
- Measured geometry, patency and local tissue relationships
- Vessel-specific evidence relevant to venous access and subsequent local changes
Out of scope
- The complete upper-limb venous network
- Cephalic, basilic and median antebrachial veins beyond their relationships to this vessel
- Whole-organism taxonomy, life history and conservation status
- Systemic vascular disorders and their treatment plans
- Venipuncture technique, access devices and procedural protocols
- Laboratory interpretation of blood collected from the vessel
Why it exists Filled
Enable an AI agent to identify a median cubital vein, describe its individual anatomy and condition, and support an evidence-based assessment of its potential use for venous access.
Distinguishing features Filled
- Identify the vessel by its course and traced junctions at the anterior elbow; location near the elbow crease alone is insufficient.
- A documented arrangement connects the cephalic and basilic veins obliquely; distinguish this connecting segment from either longitudinal vein. [Anatomical study](https://pubmed.ncbi.nlm.nih.gov/23131916/)
- Distinguish the median cubital vein from the median antebrachial vein by tracing their connections rather than relying on similar names or an assumed letter-shaped pattern. [Anatomical study](https://pubmed.ncbi.nlm.nih.gov/23131916/)
- Do not make a superficial position relative to the bicipital aponeurosis an absolute identity criterion: a deep course has been reported. [Anatomical case report](https://pmc.ncbi.nlm.nih.gov/articles/PMC9205326/)
- Require evidence of venous identity when an adjacent vessel could be an artery; a visible linear structure is not sufficient identification.
What robots and AI may and may not do Filled
Must not
- Insert a needle into a person's vein or guide an untrained person to do so.
- Advise anyone on injecting drugs into a vein.
- Diagnose clots, infection or nerve injury at the elbow in a particular person.
- Proceed with any procedure on a person who has not consented.
Only with a human decision
- Any venipuncture or cannulation, which must be done by a trained person with consent.
May
- Describe the median cubital vein and why it is a common blood-draw site, from reliable sources.
- Help clinicians document which site was used and any complications after a blood draw.
Moral aspects Filled
- Blood draws are routine but invasive; consent and skill protect the patient.
- Repeated or careless puncture can injure nerves and arteries nearby.
Who is affected
- Patients giving blood
- Phlebotomists and nurses
- Blood donors
Owners Filled
Steward
Nobody owns it; it is part of each person's body, and the clinician drawing blood answers for each procedure.
Links to other meta-models Filled
parent
- Q112826975 - registry parent class
- Q66576009 - registry parent class
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.median-cubital-vein
- Wikidata: Q3320949 (https://www.wikidata.org/wiki/Q3320949)
Direct properties required Filled
- Individual and limb: Individual or specimen reference; left or right upper limb
- Identification status: Confirmed; provisional; not visualized; absent after adequate assessment; indeterminate
- Connected vessels: Traced junctions with named superficial veins and any observed deep communications; unresolved junctions explicit
- Course relative to elbow landmarks: Mapped path relative to elbow crease, epicondyles and bicipital aponeurosis
- Lumen diameter: mm; measurement site, imaging plane and distension conditions recorded
- Skin-to-vessel depth: mm to a specified vessel boundary; limb position and probe pressure recorded
- Mapped segment length: mm between explicitly identified endpoints
- Patency assessment: Patent; partially obstructed; occluded; indeterminate; not assessed
- Compressibility: Complete; partial; absent; indeterminate; not assessed, with method
- Observed flow: Direction relative to named junctions; velocity in cm/s if measured; method and conditions
- Nearby vulnerable structures: Mapped arteries, nerves and aponeurosis; separation in mm where measured; visibility limitations
- Local access assessment: Not assessed; potentially suitable; unsuitable; indeterminate, tied to intended use, assessor and time
Recognition required Filled
- A superficial vein crossing the front of the elbow on a diagonal, often visible under the skin.
- Becomes more prominent when a tourniquet is applied above the elbow.
Capabilities and actions required Filled
- Locate and annotate the vessel in a limb examination, ultrasound study or anatomical specimen.
- Trace its junctions and classify its observed arrangement while retaining unclassified variants.
- Compare caliber, depth, compressibility and flow under documented observation conditions.
- Flag unresolved identity or nearby structures requiring additional assessment before access decisions.
- Supply vessel-specific evidence to a qualified clinician's venous-access assessment.
- Track local changes following a documented puncture or other intervention.
Hazards and failure modes required Filled
- Poor technique can cause bruising, haematoma or injury to nearby nerves and the brachial artery.
- Contaminated equipment can transmit infection.
- Its course varies between people, which can mislead a blood draw.
Standards and interfaces required Filled
- WHO guidelines on drawing blood: best practices in phlebotomy, World Health Organization.
Context of use required Filled
- The median cubital vein is encountered in anatomical study and clinical assessment of superficial veins at the front of the elbow.
- It is commonly considered for blood sampling and blood donation because it can offer accessible venous access.
- Its suitability depends on individual anatomy and condition, so the expected location alone does not establish its identity or usability.
Sources Filled
- Wikidata item Q3320949: median cubital vein - identity and sense of the item
- Wikipedia: Median cubital vein - general description of the item
Open questions
- Does the registry intend human anatomy exclusively, or should comparative anatomy be included through explicitly defined species-specific extensions?
- Which anatomical terminology authority should govern the boundary between a median cubital vein and median cephalic or median basilic branches in ambiguous arrangements?
- Which venous-pattern classification is suitable for this catalogue, and how should observations outside its categories be represented?
- What examination coverage and evidence are sufficient to distinguish true absence from nonvisualization across clinical imaging and anatomical specimens?
- Which validated, procedure-specific criteria should govern local suitability assessments, and how should their population and measurement limitations be recorded?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q3320949/spec.json