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Atrialflutter with 2:1 conduction. The atrialflutter rate is approximately 200 bpm, with 2:1 AV conduction resulting in ventricular rate almost exactly 100 bpm. Further history revealed she had new onset atrialflutter soon after her aortic surgery, and was put on flecainide approximately 1 month ago.
There is the appearance of STE in inferior leads II, III, and aVF (with STD in aVR), but this is entirely due to flutter waves which are only seen in those leads. Also, the atrialflutter in this case is relatively slow like in many other cases we've shown. AtrialFlutter with Inferior STEMI? Is this inferor STEMI?
The differential of a regular narrow QRS tachycardia is sinus tachycardia, SVT, and atrialflutter with regular conduction. There are no P waves preceding the QRS complexes, and no clear flutter waves. But adenosine only lasts for seconds, and if the dysrhythmia recurs, then the adenosine is gone. Adenosine worked.
The Differential Diagnosis is: SVT with aberrancy(#) [AVNRT vs. WPW (also called AVRT*)] Atrialflutter with 1:1 conduction, with aberrancy VT coming from the anterior fascicle ( fascicular VT )@ *AVRT = AV Reciprocating Tachycardia (Tachycardic loop that uses both the AV node and an accessory pathway.
Atrialdysrhythmias, and atrial fi brillation in particular, are frequently misdiagnosed by computer algorithms and then by the physician who overreads them. M Y A NSWER: The issue of whether C omputerized E CG I nterpretations are “at fault” for an inaccurate ECG diagnosis has been addressed numerous times on this blog.
There is atrial activity before every QRS, but that activity has negative polarity, so it is not sinus rhythm. There are clearly no flutter waves, so it is not atrialflutter (a "macro-reentrant" atrial tachycardia) Is it AVNRT originating at the superior pole of the AV node, resulting in a retrograde P-wave before the QRS?
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