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LAD (Left axis deviation)
Patient.
• LAD is not synonym with LAFB (Left anterior fasicular block)  • LAD may be found in various conditions
Axis on frontal plane	Degree
1. Normal 2. Left axis deviation (LAD) 3. Right axis deviation (RAD) 4. Extreme axis deviation 5. Indeterminate axis 6. Vertical axis 7. Horizantal axi	1. Between - 30 and + 90 2. More negative than - 30 3. More positive than + 90 4. Between - 90 and - 180 5. All limb leads has biphasic QRS

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