axis deviation


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Related to axis deviation: Right Axis Deviation, left axis deviation

deviation

 [de″ve-a´shun]
1. a turning away from the regular standard or course.
2. in ophthalmology, strabismus.
3. in statistics, the difference between a sample value and the mean.
axis deviation an axis shift in the frontal plane, as seen on an electrocardiogram. There are three types: Left, from −30° to −90°; Right, from +90° to +180°; and Undetermined, which may be either extreme left or extreme right, from −90° to +180°.
conjugate deviation dysfunction of the ocular muscles causing the two eyes to diverge to the same side when at rest.
sexual deviation sexual behavior or fantasy outside that which is morally, biologically, or legally sanctioned, often specifically one of the paraphilias.
standard deviation (SD) the dispersion of a random variable; a measure of the amount by which each value deviates from the mean. It is equal to the square root of the variance. For data that have a normal distribution, about 68 per cent of the data points fall within (plus or minus) one standard deviation from the mean and about 95 per cent fall within (plus or minus) two standard deviations. Symbol σ.
ulnar deviation a hand deformity, seen in chronic rheumatoid arthritis and lupus erythematosus, in which swelling of the metacarpophalangeal joints causes the fingers to become displaced to the ulnar side. Called also ulnar drift. See illustration.
 Ulnar deviation (ulnar drift) of the metacarpophalangeal joint, a characteristic sign of rheumatoid arthritis. From Pedretti and Early, 2001.

ax·is de·vi·a·tion

deflection of the electrical axis of the heart to the right or left of the normal.
See also: left axis deviation, right axis deviation, axis.
Synonym(s): axis shift

axis deviation

an electrocardiogram trace in which the QRS axis of the heart in the frontal plane lies outside the usual range of -30 to 110 degrees. It represents an abnormal direction of ventricular depolarization.

ax·is de·vi·a·tion

(ak'sis dē-vē-ā'shŭn)
Deflection of the electrical axis of the heart to the right or left of the normal.
See also: axis
Synonym(s): axis shift.

ax·is de·vi·a·tion

(ak'sis dē-vē-ā'shŭn)
Deflection of the electrical axis of the heart to the right or left of the normal.
See also: axis
Synonym(s): axis shift.
References in periodicals archive ?
In Group B, "P" pulmonale was present in 9 (90%) patients, right ventricular hypertrophy and right axis deviation in 5 patients (50%).
Right axis deviation was seen in 4 patients belonging to moderate group (4.
ECG showed P-pulmonale in 51%, right axis deviation in 45%, RVH in 39% and RBBB in 31%.
Right axis deviation in the presence of left ventricular hypertrophy indicates coexisting right ventricular hypertrophy, which diagnosis is supported by the isoelectric QRS in lead V1.
DIAGNOSIS: Normal sinus rhythm, left atrial enlargement, right axis deviation of the QRS complex, right ventricular hypertrophy, and nonspecific T-wave changes including a slightly long QT interval.
Electrocardiography showed sinus rhythm, right axis deviation, right ventricular hypertrophy.
The most common RVH criteria in these patients was right axis deviation, present in 100% of the patients, followed by R/S in V 5/6 < 1 in 90%.
DIAGNOSIS: Normal sinus rhythm, left atrial enlargement, right bundle branch block with marked right axis deviation (+130[degree]) due to left posterior fascicular block, a Q wave in lead V1, and widespread ST-segment changes.
Electrocardiography revealed atrial fibrillation with ventricular rate of 100/minute, incomplete right bundle branch block and right axis deviation.
Most cases have clockwise rotation of the heart and mild right axis deviation.
Various ECG parameters like rate, axis deviation, P-wave changes, QRS complex, T-wave, ST changes etc.
Among Athletes 16% (8/50) subjects showed Left Axis deviation (LAD), 4% (2/50) showed Right Axis Deviation (RAD).