A shift of the QRS axis to the patient's right, typically between +90 and +180 degrees, is called

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Prepare for the Basic Arrhythmias and 12 Lead EKG Exam. Study with detailed explanations, flashcards, and multiple choice questions to understand arrhythmias better. Get ready for your exam!

Multiple Choice

A shift of the QRS axis to the patient's right, typically between +90 and +180 degrees, is called

Explanation:
The QRS axis represents the average direction of ventricular depolarization. When this axis shifts to the right, reaching about +90 to +180 degrees, it is called Right Axis Deviation. This reflects a mean depolarization vector that points more toward the right, which can occur with conditions that stress or enlarge the right ventricle (like RV hypertrophy, COPD, or pulmonary hypertension) or in some individuals as a normal variant. On the ECG, this pattern is typically seen as QRS complexes that are negative in Lead I and positive in inferior leads such as II, III, and aVF, indicating the heart’s depolarization vector is leaning to the right. By contrast, Left Axis Deviation would show a leftward shift with a positive QRS in Lead I and negative in inferior leads, Normal axis stays roughly from -30 to +90 degrees, and Indeterminate Axis is when the axis cannot be determined from the available leads.

The QRS axis represents the average direction of ventricular depolarization. When this axis shifts to the right, reaching about +90 to +180 degrees, it is called Right Axis Deviation. This reflects a mean depolarization vector that points more toward the right, which can occur with conditions that stress or enlarge the right ventricle (like RV hypertrophy, COPD, or pulmonary hypertension) or in some individuals as a normal variant. On the ECG, this pattern is typically seen as QRS complexes that are negative in Lead I and positive in inferior leads such as II, III, and aVF, indicating the heart’s depolarization vector is leaning to the right. By contrast, Left Axis Deviation would show a leftward shift with a positive QRS in Lead I and negative in inferior leads, Normal axis stays roughly from -30 to +90 degrees, and Indeterminate Axis is when the axis cannot be determined from the available leads.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy