Question:medium
Which of the following statements is true about the bundle of Kent?
Which of the following statements is true about the bundle of Kent?
Show Hint
Accessory bypass of the AV node causing pre-excitation.
Updated On: Jun 23, 2026
- Abnormal pathway between two atria
- It is muscular or nodal pathway between the atria and ventricle in WPW syndrome
- It is slower than the AV nodal pathway
- None
Show Solution
The Correct Option is B
Solution and Explanation
Step 1: Normally the only electrical bridge from atria to ventricles is the AV node, which deliberately slows the impulse. The bundle of Kent is a rogue extra strand of conducting muscle that bridges the same chambers but without that brake.
Step 2: Because the impulse races down this accessory bridge ahead of the AV node, part of the ventricle is excited early - this pre-excitation defines WPW syndrome.
Step 3: The ECG signature follows directly: a short PR, a slurred upstroke called the delta wave, and a widened QRS, often with secondary repolarization changes.
Step 4: So the bundle of Kent links atria to ventricles (not atrium to atrium) and conducts faster, not slower, than the node. The correct description is the muscular/nodal atrioventricular pathway of WPW.
\[\boxed{\text{Muscular/nodal atria-to-ventricle pathway in WPW}}\]
Step 2: Because the impulse races down this accessory bridge ahead of the AV node, part of the ventricle is excited early - this pre-excitation defines WPW syndrome.
Step 3: The ECG signature follows directly: a short PR, a slurred upstroke called the delta wave, and a widened QRS, often with secondary repolarization changes.
Step 4: So the bundle of Kent links atria to ventricles (not atrium to atrium) and conducts faster, not slower, than the node. The correct description is the muscular/nodal atrioventricular pathway of WPW.
\[\boxed{\text{Muscular/nodal atria-to-ventricle pathway in WPW}}\]
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