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Modified limb lead system: Its effects on wave amplitudes and axis in surface ECG
Modified limb lead (MLL) electrocardiogram (ECG) system
may be used during rest or exercise ECG test, or in atrial activity
enhancement. Due to modifications to limb electrode placement,
changes are likely to happen in ECG wave amplitudes and frontal
plane axis, which may alter the clinical limits of normality and
ECG diagnostic criteria (1). There are also several other alterna-
tive lead systems that are placed on the human torso to record
and study the electrical activity of the atria (2–4). A few recent
studies have proposed modification to the standard 12-lead ECG
system of placing the limb electrodes closer to the atria in order
to enhance atrial ECG components (5–7)
Modified limb lead system: Its effects on wave amplitudes and axis in surface ECG
Modified limb lead (MLL) electrocardiogram (ECG) system
may be used during rest or exercise ECG test, or in atrial activity
enhancement. Due to modifications to limb electrode placement,
changes are likely to happen in ECG wave amplitudes and frontal
plane axis, which may alter the clinical limits of normality and
ECG diagnostic criteria (1). There are also several other alterna-
tive lead systems that are placed on the human torso to record
and study the electrical activity of the atria (2–4). A few recent
studies have proposed modification to the standard 12-lead ECG
system of placing the limb electrodes closer to the atria in order
to enhance atrial ECG components (5–7)
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