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  #1  
Old 01-25-2012
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EKG Arrhythmia causing lightheadedness!

A 25 year man presents with episodes lightheadedness. He has no significant past medical history. Cardiac examination reveals no heart murmurs, chest X-ray and ECG are normal. A 24 hour tape is requested. Which arrhythmia might cause his symptoms?

A. Atrial extrasystole
B. Supraventricular tachycardia
C. Wenkebach
D. Ventricular extrasystole
E. First degree heart block
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  #2  
Old 01-25-2012
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2nd degree block.
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Old 01-25-2012
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Ans C ...... wenkebach causes arrhythmias which are episodic .....
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Old 01-25-2012
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Quote:
Originally Posted by Hitman View Post
Ans C ...... wenkebach causes arrhythmias which are episodic .....
what the heck is wenkebach?
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Old 01-25-2012
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Quote:
Originally Posted by khushi.chahal View Post
what the heck is wenkebach?

its a 2nd degree block , Mobitz type 1 is wenkebach block ........
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Old 01-25-2012
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Quote:
Originally Posted by Hitman View Post
its a 2nd degree block , Mobitz type 1 is wenkebach block ........
It can be seen on ECG as progressive prolonged PR interval followed by absence of P wave
I will go with A. as i think the others can be seen on ECG but not sure
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Old 01-25-2012
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Quote:
Originally Posted by mohitkmc View Post
It can be seen on ECG as progressive prolonged PR interval followed by absence of P wave
I will go with A. as i think the others can be seen on ECG but not sure
yes you are right , all can be seen on ecg , wekenbach causes light headedness more often and extrasystoles are usually asymptomatic and may cause palpitation , so selected it but still you are correct atrial extrasystole is more common and is diagnosed by 24 hr ECG ...
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Old 01-26-2012
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A

all others can be seen on ecg
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Old 04-10-2012
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d)

all others except for a) would be seen on ECG, and a) wouldn't cause lightheadedness. I think...

...
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Old 04-11-2012
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Quote:
Originally Posted by Hitman View Post
Ans C ...... wenkebach causes arrhythmias which are episodic .....

wenkebach is episodic, but it would occur within the 24 hour time frame in the question. I'm also leaning towards A.
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Old 04-11-2012
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Quote:
Originally Posted by BritneySpears View Post
d)

all others except for a) would be seen on ECG, and a) wouldn't cause lightheadedness. I think...

...
That's not true.

Why not SVT ?

I guess SVT(paroxysmal or flutter) can also be missed by ECG. SVT is the most common one among young adults. it could be asympt or associated with lightheadedness, dizzyness, palpitations. Symptoms could be mild in many cases.
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Cardiovascular-, EKGs-, Pathology-, Step-1-Questions

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