Ecg Axis on ECG Library – LITFL Basics

ECG Axis Interpretation

Sun, 17 Nov 2024 00:00:00 +0000

Cardiac axis represents the sum of depolarisation vectors generated by individual cardiac myocytes. Clinically is is reflected by the ventricular axis, and interpretation relies on determining the relationship between the QRS axis and limb leads of the ECG (below diagram)

Since the left ventricle makes up most of the heart muscle under normal circumstances, normal cardiac axis is directed downward and slightly to the left:

Normal Axis = QRS axis between -30° and +90°.

Abnormal axis deviation, indicating underlying pathology, is demonstrated by:

Cardiac Axis Trainer

Tue, 10 May 2022 00:00:00 +0000

Learning cardiac axis interpretation can be tedious.

I have created an open source webapp hosted on CardiacAxis.com. Here you will be able to analyse in English and German the ECG variations with axis deviation.

The Axis trainer online is interactive and the arrow can be moved to demonstrate each of the specific QRS complex changes. Bookmark to your phone homepage and try it out for yourself. Below is a quick demonstration through 360 degrees…

Super Axis Man SAM

Tue, 03 Nov 2020 00:00:00 +0000

↪ ECG Basics Homepage

Who is SAM?

As a routine part of ECG analysis, we need to determine the ECG AXIS. It isn’t really enough to just whimper… “Is it normal?” So, to help understand axis a tiny bit…I need to introduce you to SAM – the Super Axis Man

Building SAM – the Super Axis Man

(1) Draw a circle and put SAMs head on the top.

Note: SAM is smiling today because he is learning something…