lead I
E819343
Lead I is a standard limb electrocardiogram (ECG) lead that records the heart’s electrical activity between the right and left arms.
All labels observed (1)
| Label | Occurrences |
|---|---|
| lead I canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9768991 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: lead I Context triple: [Einthoven triangle, leadIncluded, lead I]
-
A.
InI
InI was a 1990s hip-hop group affiliated with Pete Rock, known for their jazzy, boom-bap sound and the cult-classic shelved album "Center of Attention."
-
B.
LI
LI is the Roman numeral representing the number 51.
-
C.
LI
LI is the two-letter ISO 3166-1 alpha-2 country code for Liechtenstein.
-
D.
Le
Le is a common Vietnamese surname shared by many notable figures in the country’s history and culture.
-
E.
I
I is the regnal numeral designating the first monarch of a given name in a royal succession.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: lead I Target entity description: Lead I is a standard limb electrocardiogram (ECG) lead that records the heart’s electrical activity between the right and left arms.
-
A.
InI
InI was a 1990s hip-hop group affiliated with Pete Rock, known for their jazzy, boom-bap sound and the cult-classic shelved album "Center of Attention."
-
B.
LI
LI is the Roman numeral representing the number 51.
-
C.
LI
LI is the two-letter ISO 3166-1 alpha-2 country code for Liechtenstein.
-
D.
Le
Le is a common Vietnamese surname shared by many notable figures in the country’s history and culture.
-
E.
I
I is the regnal numeral designating the first monarch of a given name in a royal succession.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
bipolar limb lead
ⓘ
electrocardiogram lead ⓘ standard limb lead ⓘ |
| belongsToSystem |
Einthoven limb leads
ⓘ
linked to:
Einthoven triangle
|
| canBeDerivedFrom | Einthoven triangle ⓘ |
| hasEinthovenNumber | I ⓘ |
| hasNegativeElectrode | right arm ⓘ |
| hasPositiveElectrode | left arm ⓘ |
| hasTypicalWaveforms |
P wave
ⓘ
QRS complex ⓘ T wave ⓘ |
| isAffectedBy |
limb electrode placement
ⓘ
skin‑electrode contact quality ⓘ |
| isBipolar | true ⓘ |
| isCommonlyDisplayedAs | top limb lead on ECG printout ⓘ |
| isNamedAfter |
Einthoven lead system
ⓘ
linked to:
Einthoven triangle
|
| isOftenMonitoredIn |
intensive care units
ⓘ
operating rooms ⓘ telemetry units ⓘ |
| isOrientedApproximately | 0 degrees in frontal plane ⓘ |
| isPartOf |
12‑lead ECG
ⓘ
3‑lead ECG ⓘ 5‑lead ECG ⓘ |
| isRecordedIn | frontal plane ⓘ |
| isSensitiveTo | left lateral wall electrical activity ⓘ |
| isStandardizedBy | international ECG conventions ⓘ |
| isStandardLimbLead | true ⓘ |
| isUnipolar | false ⓘ |
| isUsedFor |
arrhythmia monitoring
ⓘ
axis determination ⓘ cardiac rhythm assessment ⓘ ischemia detection ⓘ |
| isUsedIn |
ambulatory ECG monitoring
ⓘ
continuous bedside monitoring ⓘ exercise stress testing ⓘ preoperative assessment ⓘ |
| isUsedToAssess |
P wave morphology
ⓘ
QRS duration ⓘ ST segment changes ⓘ T wave abnormalities ⓘ |
| isUsedToEstimate | frontal plane QRS axis ⓘ |
| measuresPotentialDifferenceBetween |
left arm electrode
ⓘ
right arm electrode ⓘ |
| recordsElectricalActivityBetween |
left arm
ⓘ
right arm ⓘ |
| requiresElectrodesOn |
left arm
ⓘ
right arm ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: lead I Description of subject: Lead I is a standard limb electrocardiogram (ECG) lead that records the heart’s electrical activity between the right and left arms.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.