Skip to content

Main content

ECG Lead Polarity Label

Record explicitly supplied ECG lead polarity wording without defining a clinical lead system.

Loading tool…

Description

Label a lead's supplied positive and negative electrode wording.

Cardiology records distinguish event times, signal intervals, recording duration, paper calibration and Doppler angle conventions. A waveform distance requires a stated recording speed, and a signed projected velocity is not a diagnosis. Timing fractions and source labels do not establish cardiac function or appropriate care.

Label a lead's supplied positive and negative electrode wording.

When to use this tool

Use ECG Lead Polarity Label when you already have leadCode, positiveElectrode, negativeElectrode and need to label a lead's supplied positive and negative electrode wording.

How to use the tool and how it works

  1. Enter leadCode, positiveElectrode, negativeElectrode. Use the units and conventions below.
  2. Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
  3. Read label. Use the output convention below.

Require all three strings nonempty; format lead; +=positive; -=negative.1

Input fieldMeaning and unitsAccepted input
leadCodeLead CodeRequired. Text; minimum UTF-16 length 1; maximum UTF-16 length 8192.
positiveElectrodePositive ElectrodeRequired. Text; minimum UTF-16 length 1; maximum UTF-16 length 8192.
negativeElectrodeNegative ElectrodeRequired. Text; minimum UTF-16 length 1; maximum UTF-16 length 8192.
Output fieldInterpretationReturned shape
labelLabelRequired. Text; maximum UTF-16 length 8192.
json
{
  "input": {
    "leadCode": "LEAD-A",
    "positiveElectrode": "Electrode 1",
    "negativeElectrode": "Electrode 2"
  },
  "output": {
    "label": "LEAD-A; +=Electrode 1; -=Electrode 2"
  }
}

Limitations and assumptions

  • No electrodes, lead placement, electrical polarity, recording quality, diagnosis or safe monitoring is verified.
  • Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.

Alternative or Complementary methods

Review the original trace, acquisition settings, measurements and complete clinical context. Use the appropriate professional assessment for interpretation; local conversions and flags do not identify rhythms, assess disease or guide treatment.

References

  1. Calculation and input contract: cardiology/ecg-lead-polarity-label — tool.io

Similar or alternative tools