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A member asked:
Is sinus tachycardia same thing as the atrial fibillliation?
2 doctors weighed in across 2 answers
No: In sinus tachycardia, the rhythm comes from the sinus node of the atria and is regular (good regularly-spaced p-waves on ekg). In atrial fibrillation, the dominant role of the sinus nodes is gone, there are no p-waves, and the atria quiver, and the hearbeat is irregularly irregular.
Answered 3/2/2013
5.3k views
No: Sinus tachy is a fast heart rate > 100 beats per minute through the normal physiologic path...Sa node in atrium >av node>ventricles. Afib is multiple ectropic sites in the atria firing off and competing with the sa node.Both can be very fast but its a diffrent mechanism.
Answered 3/2/2013
5.3k views
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