extreme axis deviation

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ECG STAT July 15, 2025
Extreme Axis Deviation Basics

Key Points Definition: Extreme axis deviation (aka “Northwest Axis”) occurs when the QRS axis is between –90° and ±180°. ECG Clue: QRS negative in Lead I QRS negative in Lead…

Weekly Workout August 26, 2024
Navigating a Very Abnormal QRS Axis with a Stepwise Approach

A 44-year-old woman presents to the emergency department with vague complaints about shortness of breath. The following ECG is obtained at triage and brought to you for interpretation:

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