Lown-Ganong-Levine syndrome

Question 1

What is the most common preexcitation disorder?

Answer 1

Wolff-Parkinson-White syndrome (WPW)

WPW is a type of arrhythmia caused by an abnormal electrical pathway in the heart.

Question 2

What are the characteristics of Wolff-Parkinson-White syndrome (WPW)?

Answer 2

Short PRI, nonspecific ST-T wave changes, widened QRS complex, delta wave on ECG

Each characteristic indicates specific electrical conduction abnormalities in the heart.

Question 3

What is the duration of a short PRI in WPW?

Answer 3

Less than 0.12 seconds (120 milliseconds)

A short PRI is a key diagnostic criterion for WPW.

Question 4

What does the delta wave indicate in WPW?

Answer 4

Early departure from the PR segment due to conduction through the accessory pathway

The delta wave is a hallmark of WPW on an ECG.

Question 5

What is the accessory pathway involved in WPW known as?

Answer 5

Bundle of Kent

The bundle of Kent facilitates abnormal electrical conduction in WPW.

Question 6

What is a characteristic feature of the QRS complex in WPW?

Answer 6

Widened QRS complex

A widened QRS complex reflects altered ventricular depolarization in WPW.

Question 7

Fill in the blank: WPW is characterized by a _______ wave on ECG.

Answer 7

delta

The delta wave is a key feature of the ECG in WPW.

Question 8

True or False: Nonspecific ST-T wave changes are a characteristic of WPW.

Answer 8

True

These changes can indicate underlying issues with electrical conduction.

Question 9

What does the delta wave represent in terms of ventricular tissue?

Answer 9

Early depolarization of ventricular tissue

This early depolarization occurs due to the conduction through the accessory pathway.