Question
In which condition,the characteristic in ECG marked by yellow circle is seen?
A. AV nodal (junctional) rhythm.
B. Lown-Ganong-Levine (LGL) syndrome.
C. Wolff-Parkinson-White (WPW).
D. All of the above.
Show Answer
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Correct Answer » D
Explanation
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Ans: D. All of the above.
The ECG image points towards shortened PR interval.
PR interval
- The PR interval is the time from the onset of the P wave to the start of the QRS complex.
- It reflects conduction through the AV node.
- The normal PR interval is between 120 – 200 ms duration (three to five small squares).
Long PR interval:
- If the PR interval is > 200 ms, first degree heart block is said to be present.
Shortened PR interval:
- PR interval < 120 ms suggests pre-excitation (Wolff-Parkinson-White (WPW) and Lown-Ganong-Levine (LGL) syndromes) or AV nodal (junctional) rhythm
