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Electrocardiogram change type code N

This item has been superseded by a newer version by one or more Registration Authorities.

Definition

A code set describing the type of change to the heart rhythm seen on the electrocardiogram (ECG).

Representation

Data Type Number
Format N
Maximum character length 1

Values

Value Meaning Start Date End Date
Permissible Values 1 ST-segment elevation >= 1 mm (0.1 mV) in >= 2 contiguous limb leads
2 ST-segment elevation >= 2 mm (0.2 mV) in >= 2 contiguous chest leads
3 ST-segment depression >= 0.5 mm (0.05 mV) in >= 2 contiguous leads (includes reciprocal changes)
4 T-wave inversion >= 1 mm (0.1 mV)
5 Significant Q waves
6 Bundle branch block (BBB)
7 Non-specific
8 No changes
Supplementary Values 9 Not stated/inadequately described

Comments

Guide for use:

CODE 1     ST-segment elevation >= 1 mm (0.1 mV) in >= 2 contiguous limb leads

ST-segment elevation indicates greater than or equal to 1 mm (0.1 mV) elevation in 2 or more contiguous limb leads.

CODE 2     ST-segment elevation >= 2 mm (0.2 mV) in  >= 2 contiguous chest leads

ST-segment elevation indicates greater than or equal to 2 mm (0.2 mV) elevation in 2 or more contiguous chest leads.

CODE 3     ST-segment depression >= 0.5 mm (0.05 mV) in >= 2 contiguous leads (includes reciprocal changes)

ST-segment depression of at least 0.5 mm (0.05 mV) in 2 or more contiguous leads (includes reciprocal changes).

CODE 4     T-wave inversion >= 1 mm (0.1 mV)

T-wave inversion of at least 1 mm (0.1 mV) including inverted T waves that are not indicative of acute MI.

CODE 5     Significant Q waves

Q waves refer to the presence of Q waves that are greater than or equal to 0.03 seconds in width and greater than or equal to 1 mm (0.1 mV) in depth in at least 2 contiguous leads.

CODE 6     Bundle branch block (BBB)

Bundle branch block pattern

CODE 7     Non-specific

Changes not meeting the above criteria.

CODE 8     No changes

No ECG changes.

CODE 9     Not stated/inadequately described

Includes unknown.

References


This content Based on Australian Institute of Health and Welfare material. Attribution provided as required under the AIHW CC-BY licence.

Related content

Relation Count
Data Elements implementing this Value Domain 1