What is the relationship between the direction of the wave of depolarization and the deflection on the ECG?
Understand the Problem
The question is asking about the physiological relationship between the wave of depolarization in the heart and how it corresponds to recordings on an electrocardiogram (ECG). It is examining the impact of the direction of electrical charges on the deflection seen in ECG readings.
Answer
The ECG deflection is positive when depolarization moves toward a positive electrode and negative when it moves away.
The deflection on the ECG is positive when the wave of depolarization moves toward the positive electrode and negative when it moves away from it.
Answer for screen readers
The deflection on the ECG is positive when the wave of depolarization moves toward the positive electrode and negative when it moves away from it.
More Information
The relationship between the wave of depolarization and ECG deflection is fundamental for interpreting cardiac cycles and diagnosing cardiac conditions.
Tips
A common mistake is confusing lead orientation and electrical axis, leading to incorrect interpretation of deflections.
Sources
- Volume Conductor Principles and ECG Rules of Interpretation - cvphysiology.com
- ECG Basics - imperialendo.co.uk
- Cardiovascular Lab: Electrocardiogram: Basics - medicine.mcgill.ca
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