axis deviation

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


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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

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
Farlex Partner Medical Dictionary © Farlex 2012

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.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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.
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
ECG Changes in COPD Patients ECG Changes Criteria Number % (n = 50) P-pulmonale Absent 16 32.0 Present 34 68.0 Right axis deviation Absent 19 38.0 of QRS Complex Present 31 62.0 (Beyond +90 degrees) Right Ventricular Absent 40 80.0 Hypertrophy (RVH) Present 10 20.0 Right bundle branch Absent 34 68.0 block (RBBB) Present 16 32.0 Low voltage of QRS Absent 24 48.0 complex Present 26 52.0 Polymorphic p-wave Absent 44 88.0 Present 6 12.0 Table 2.
Effect of foot deformity on conventional mechanical axis deviation and ground mechanical axis deviation during single leg stance and two leg stance in genu varum.
Millard and Colleagues (1967) reported that 20 of his 46 COPD patients had isolated right ventricular hypertrophy; 16 of these had right axis deviation (+90[degrees] to +180[degrees]).
The finding of extreme right axis deviation of 180 degrees or more or an axis in the right upper quadrant should raise the suspicion as these values are above the age appropriate reference range.
An EKG showing right axis deviation and ST-T wave changes may have alerted practitioners that further workup is needed, and an echocardiogram or CT angiogram would have discovered the rare underlying diagnosis and allowed for expedited diagnosis and treatment.
In the present study, among total 100 cases, 10 cases (10%) displayed left axis deviation with male-female ratio of 3:2.
1, were sinus tachycardia (79.16%) followed by normal QRS complex (75%), left ventricular hypertrophy (50%), LBBB 20.8%, left axis deviation, atrial ectopics, ventricular ectopics, ST-T changes all being 16.6% each.
Table: Electrocardiographic abnormalities in pulmonary embolism Rhythm Sinus tachycardia Atrial premature complexes Atrial flutter Atrial fibrillation Right ventricular premature complexes Ventricular fibrillation Sinus bradycardia or asystole (rarely) P waves Rightward axis ([greater than or equal to] 75[degrees]) Tall (>2.5 mm) in leads II, III, or aVF QRS complex Right axis deviation or rightward axis shift Clockwise rotation Right ventricular conduction delay Right ventricular hypertrophy Pseudoinfarction Inferior Anterior Both Left axis deviation (rarely) ST segment Elevation inferiorly and/or anteriorly Depression T wave Inversion inferiorly Inversion anteriorly QT prolongation Modified from references 2 and 7
Electrocardiogram showed a huge P-pulmonale and right ventricular hypertrophy with secondary ST-T changes, and right axis deviation (Fig.
Combination of rS pattern in lead V5-V6, right axis deviation, clockwise rotation, dominant R in lead aVR and "P" pulmonale were indicative of RVH in patients lacking classical RVH changes in ECG.