Figure 5. The relationship of channelopathy, cardiomyopathy, and coronary-artery pathology with the incidence of sudden cardiac death. Note that channelopathies and cardiomyopathies both predispose to irregular heartbeats (arrythmias), which can cause the heart to pump ineffectively. Coronary-artery pathology predisposes to “heart attacks” (when the heart does not get enough blood). Image from Cardiac Imaging and Stress Testing Asymptomatic Athletes to Identify Those at Risk of Sudden Cardiac Death. Andre La Gerche, Aaron L. Baggish, Juhani Knuuti, David L. Prior, Sanjay Sharma, Hein Heidbuchel, Paul D. Thompson JACC: Cardiovascular Imaging Sep 2013, 6 (9) 993-1007.