Answer - Case of the month (Feb 2012): Difference between revisions

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(Created page with "ECG 1:<br/> 800px ECG 2:<br/> 800px '''Q: This narrow complex rhythm shows an early beat after every three beats (group formation), ...")
 
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ECG 1:<br/>
'''ECG 1:'''<br/>
[[File:E000579.jpg|800px]]
[[File:E000579.jpg|800px]]
ECG 2:<br/>
 
'''ECG 2:'''<br/>
[[File:E000580.jpg|800px]]
[[File:E000580.jpg|800px]]


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'''Correct answer:'''
'''Correct answer:'''
D. The ECG [show second ECG] shows continuous sinus rhythm (about 45/min) on atrial level in competition with a AV nodal rhythm (about 55/min). Most sinus beats are blocked in the AV node or below due to refractoriness. The ones that occur longer after the previous beat get conducted, resulting in an additional ventricular contraction. The first arrow point to a P wave that is not well visible, but is deducted from the pattern thereafter.
D. The [[http://en.ecgpedia.org/wiki/File:E000580.jpg second ECG]] shows continuous sinus rhythm (about 45/min) on atrial level in competition with a AV nodal rhythm (about 55/min). Most sinus beats are blocked in the AV node or below due to refractoriness. The ones that occur longer after the previous beat get conducted, resulting in an additional ventricular contraction. The first arrow point to a P wave that is not well visible, but is deducted from the pattern thereafter.
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