In electrocardiography, left axis deviation (LAD) is a condition wherein the mean electrical axis of ventricular contraction of the heart lies in a frontal...

this is considered left axis deviation. If the electrical axis is between +90° and +180° this is considered right axis deviation (RAD). RAD is an ECG finding...

by only the left anterior fascicle – one half of the left bundle branch being defective. It is manifested on the ECG by left axis deviation. It is much...

complexes. The axis may be normal but may be deviated to the left or right. There are also partial blocks of the left bundle branch: "left anterior fascicular...

diameter. Average thickness of the left ventricle, with numbers given as 95% prediction interval for the short axis images at the mid-cavity level are:...

is right axis deviation and beyond −30° is left axis deviation (the third quadrant of −90° to −180° is very rare and is an indeterminate axis). A shortcut...

room exists for enlargement of the left atrium along the anteroposterior axis. By approximating the shape of the left atrium as an ellipsoid, its volume...

axis deviation (RAD), the rare combination is considered to be highly suggestive of dilated or congestive cardiomyopathy. Echocardiogram shows left ventricular...

sensitive to catecholamines. The ventricular beats typically have a right axis deviation. Multiple morphologies of ventricular tachycardia may be present in...

arrest Other / ungrouped hexaxial reference system Right axis deviation Left axis deviation QT Short QT syndrome T T wave alternans ST J wave ST elevation...

electrical axis in the frontal plane will be approximately +60°. Normal axis: -30° to +90° Left axis deviation: -30° to -90° Right axis deviation: +90° to...

arrest Other / ungrouped hexaxial reference system Right axis deviation Left axis deviation QT Short QT syndrome T T wave alternans ST J wave ST elevation...

branch, leading to a right axis deviation seen on the ECG. The American Heart Association has defined a LPFB as: Frontal plane axis between 90° and 180° in...

However, the left bundle branch still normally activates the left ventricle. These impulses can then travel through the myocardium of the left ventricle...

arrest Other / ungrouped hexaxial reference system Right axis deviation Left axis deviation QT Short QT syndrome T T wave alternans ST J wave ST elevation...

based on a genetic inheritance), high blood pressure (which can enlarge the left ventricle causing the heart muscle to weaken over time), and coronary artery...

the following characteristics: Drastic rotation of the heart's electrical axis Prolonged QT interval (LQTS) - may not be present in the short-coupled variant...

genes involved with making heart muscle proteins. Other inherited causes of left ventricular hypertrophy may include Fabry disease, Friedreich's ataxia, and...

anterolateral-specific enhancement. A similar relationship was found between a left ventricular ejection fraction < 50%, increased mortality, and increased major...

arrest Other / ungrouped hexaxial reference system Right axis deviation Left axis deviation QT Short QT syndrome T T wave alternans ST J wave ST elevation...

or pressure-like around the chest and often radiates to the left arm and angle of the left jaw. Symptoms often occur without any specific trigger, although...

discriminate the two. Typical locations for referred pain are arms (often inner left arm), shoulders, and neck into the jaw. Angina is typically precipitated...

evaluation of the patient, a bulging out of the left ventricular apex with a hypercontractile base of the left ventricle is often noted. It is the hallmark...

arrest Other / ungrouped hexaxial reference system Right axis deviation Left axis deviation QT Short QT syndrome T T wave alternans ST J wave ST elevation...

apex displacement. An ECG may show left ventricular hypertrophy and signs of left heart strain. Left axis deviation can be a sign of advanced disease....

arrest Other / ungrouped hexaxial reference system Right axis deviation Left axis deviation QT Short QT syndrome T T wave alternans ST J wave ST elevation...

arrest Other / ungrouped hexaxial reference system Right axis deviation Left axis deviation QT Short QT syndrome T T wave alternans ST J wave ST elevation...

heart's electrical axis slightly to the right. The ECG will show a terminal R wave in lead V1 and a slurred S wave in lead I. Left bundle branch block...

one in the right bundle branch, and two in the left bundle branch the left anterior fascicle and the left posterior fascicle. A block at any of these levels...

primum defects left axis deviation is seen in most patients with an axis of > -30 degrees and very few patients have right axis deviation. In contrast ostium...