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. Author manuscript; available in PMC: 2014 Mar 3.
Published in final edited form as: Br J Sports Med. 2009 Sep;43(9):657–662. doi: 10.1136/bjsm.2008.054734

Figure 1.

Figure 1

Distribution of QTc values for patients with and without long QT syndrome (LQTS). The “borderline” QTc level of 440 ms is shown with a solid line. Note the significant overlap between “normal” and QTc values of mutation-positive patients from Mayo’s LQTS Clinic. Also note that the average QTc value in normal postpubertal females is on average 10 ms longer than that of normal postpubertal males. Modified from Taggart et al16 with permission from the American Heart Association, copyright 2007.