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Will exercise help the AV node send signals more effectively?

Want info available on my sister's diagnosis on how her AV node is not getting the message to the ventricle to make the atrium contract after the SA node fires ... a bundle branch block? The pacemaker they've just put in will automatically stimulate the ventricle to fire. My question is whether sufficient activity to cause the AV node to fire more rapidly under exercise conditions be of benefit? 

submitted by Roger from Marstons Mills, Massachusetts on 8/21/2013


by Texas Heart Institute cardiologist, Mohammad Saeed, MD    

Mohammad Saeed, MD A variety of conditions can affect the AV node and impair its ability to conduct electrical impulses from the upper chamber (atrium) to the lower chamber (ventricle). When this condition worsens and reaches a stage where it starts impacting the ability of an individual to function properly, a pacemaker might be indicated. A pacemaker can restore the normal relationship and improve the symptoms. The AV node still retains the capacity to conduct and may do so depending upon various factors including level of activity or exercise. Exercising so that the AV node fires more rapidly does not have any proven benefits. Exercise may have other ancillary benefits and should be pursued for other reasons.

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Updated August 2013
Texas Heart Institute Heart Information Center
Through this community outreach program, staff members of the Texas Heart Institute (THI) provide educational information related to the prevention, diagnosis, and treatment of cardiovascular disease. It is not the intention of THI to provide specific medical advice, but rather to provide users with information to better understand their health and their diagnosed disorders. Specific medical advice will not be provided and THI urges you to visit a qualified physician for diagnosis and for answers to your questions.
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