Derived 12-lead ECG
6-14 ECG and Arrhythmia Monitoring
Derived 12-lead ECG
Hexad
When operating with the IntelliVue Information Center iX, the optional
Hexad algorithm generates a Mason-Likar 12-lead ECG from a 6-wire
leadset (including four limb electrodes and two chest electrodes) placed
according to the Mason-Likar 6-electrode placement.
To generate a derived 12-lead ECG using this configuration, 8 out of the 12
leads are directly acquired (I, II, III, aVR, aVL, aVF and the two
directly-recorded V leads) and only 4 precordial leads need to be derived.
This means that 8 of 12 are identical to the 12 leads acquired using a full set
of 10-wire standard ECG lead set. For more information refer to the 12 Lead
ECG Monitoring Using a Reduced Lead Set Application Note, Part Number
452296278591.
Caution
Hexad derived ECG and their measurements are approximations to the
standard ECG, and should not be used for diagnostic interpretation.
EASI
The EASI system, a method of deriving 12ECG leads using a five-electrode
configuration (4 monitoring electrodes and a ground electrode), has been
developed to better address the goals and challenges of continuous ECG
monitoring. EASI monitoring makes it possible to obtain 12-lead ECG
information under continuous monitoring conditions across the continuum
of care. The EASI method of obtaining a 12-lead ECG requires only five
electrodes. The electrodes are placed on the upper sternum (S), the lower
sternum (E) at the level of the fifth intercostal space, and on the right and
left midaxillary lines (I and A) at the same level as the lower sternum
electrode. A fifth ground electrode can be placed anywhere.
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