In electrocardiography, left axis deviation (LAD) is a condition wherein the mean electrical axis of ventricular contraction of the heart lies in a frontal plane direction between −30° and −90°.

Oct 8, 2024 · ECG features and causes of left axis deviation (LAD) using the hexaxial reference system. QRS axis between -30 and -90 degrees.

In left anterior fascicular block there is a delay in the activation of the anterior region of the left ventricle, which produces a marked left-axis deviation (QRS axis between -45° and -90°), without widening of …

Oct 9, 2025 · Left axis deviation (LAD) on an electrocardiogram is a supportive finding that may indicate underlying cardiac pathology but is not diagnostic on its own and...

Jan 8, 2024 · Identify the key components of electrical axis deviation on an electrocardiogram. Differentiate between right-axis deviation and left-axis deviation based on electrocardiogram …

Dec 9, 2025 · Left Axis Deviation (LAD) is a term you might come across when reviewing an electrocardiogram (ECG or EKG), a common test that measures the heart's electrical activity. But …

Apr 29, 2025 · Learn what left axis deviation on an ECG means, its potential causes, and how it fits into a broader clinical assessment of heart health.

Jan 5, 2025 · Explore the common causes of left axis deviation on ECGs, learn helpful mnemonics for remembering them, and understand the clinical implications for patient care and risk assessment.

Nov 5, 2024 · LAD (back to contents) Left axis deviation is defined as an axis between -30 and -90 degrees.

Discover normal vs. abnormal heart axis, ECG indicators, and causes of left axis deviation for precise cardiac assessments and interpretations.