A pointed clue
Sarver Heart Center, University of Arizona, Tucson, USA.The American journal of medicine (Impact Factor: 5). 12/2005; 118(11):1221-2. DOI: 10.1016/j.amjmed.2005.06.073
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ABSTRACT: Laughter-Induced LBBB. We present the case of a patient with ischemic heart disease and intermittent left bundle branch block, reproducibly induced by laughter. Following treatment of ischemia with successful deployment of a drug-eluting stent, no further episodes of inducible LBBB were seen. Transient ischemia, exacerbated by elevated intrathoracic pressure during laughter, may have contributed to onset of this phenomenon. (J Cardiovasc Electrophysiol, Vol. 23 pp. 1136-1138, October 2012).
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