left axis deviation


Also found in: Acronyms.

left ax·is de·vi·a·tion

a mean electrical axis of the heart pointing to -30° or more negative. See: hexaxial reference system.

left axis deviation

Cardiology Any shift in the pattern of EKG leads; when seen with a counterclockwise loop abnormality in the frontal plane of a vectorcardiogram, LAD is typical of an ostium primum type atrioventricular canal defect.
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In the present study, among total 100 cases, 10 cases (10%) displayed left axis deviation with male-female ratio of 3:2.
Regular follow up and early interpretation of ECG on the basis of left axis deviation, QRS complex and ST changes altogether help to start early treatment of disease.
P wave axis greater than +70[degrees] thus usually reflects right axis deviation of the p wave, P wave axis less than +45[degrees] usually reflects left axis deviation.
Criteria for left anterior fascicular block as proposed by the World Health Organization/International Society and Federation of Cardiology (WHO/ISFC) task force are left axis deviation of the QRS in the frontal plane of -45[degrees] to -90[degrees], qR pattern in aVL, R peak time in aVL [greater than or equal to] 45 ms, and QRS duration <0.
24) Slight left axis deviation (-30, and -15, respectively) of mean QRS axis was present in 14.
Among Athletes 16% (8/50) subjects showed Left Axis deviation (LAD), 4% (2/50) showed Right Axis Deviation (RAD).
One subject in smokers group showed left axis deviation.
In the present study QRS abnormality was higher with prominent left axis deviation (48.
The electrocardiographic finding of left axis deviation occurs in wide variety of clinical conditions yet its significance has been debated.
His age is 42 years and the same person is also having left axis deviation.