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What are the causes of left axis deviation?

by Rhyley Bryan

What are the causes of left axis deviation?

Causes of LAD

  • Left anterior fascicular block.
  • Left bundle branch block.
  • Left ventricular hypertrophy.
  • Inferior MI.
  • Ventricular ectopy.
  • Paced rhythm.
  • Wolff-Parkinson White syndrome.

Is left axis deviation normal?

The axis of the ECG is the major direction of the overall electrical activity of the heart. It can be normal, leftward (left axis deviation, or LAD), rightward (right axis deviation, or RAD) or indeterminate (northwest axis). The QRS axis is the most important to determine.

How is left axis deviation treated?

Blood pressure medication may help prevent further enlargement of the left ventricle and even shrink your hypertrophic muscles….Medications

  1. Angiotensin-converting enzyme (ACE) inhibitors.
  2. Angiotensin II receptor blockers (ARBs).
  3. Calcium channel blockers.
  4. Diuretics.
  5. Beta blockers.

How to determine Axis on ECG?

Determining Axis. The axis of the ECG is the major direction of the overall electrical activity of the heart. It can be normal, leftward (left axis deviation, or LAD), rightward (right axis deviation, or RAD) or indeterminate (northwest axis). The QRS axis is the most important to determine. However, the P wave or T wave axis can also be measured.

What leads to look at for axis deviation?

The most efficient way to estimate axis is to look at LEAD I and LEAD aVF. Examine the QRS complex in each lead and determine if it is Positive, Isoelectric (Equiphasic) or Negative: A positive QRS in Lead aVF similarly aligns the axis with lead aVF. A.

What is the normal degrees of T axis on an ECG?

The frontal plane T-wave axis was estimated from 12-lead electrocardiograms obtained on admission and categorized as normal (15 degrees to 75 degrees), borderline (75 degrees to 105 degrees or 15 degrees to -15 degrees), and abnormal (>105 degrees or < -15 degrees).

What does borderline left axis deviation mean?

Borderline left axis deviation in itself does not carry any meaning. it just shows that mean of all electrical activity of your heart is directed to slightly leftward.