Here's what rhymes with myocardium.

Consider these alternatives

ischemic / academic myocytes / rights contractility / ability ventricular / atrioventricular cardiomyocytes / rights erythrocytes / rights parahippocampal / sample contractile / tactile systole / whole hepatocytes / rights hepatic / dramatic atrioventricular / ventricular excitability / stability thalamic / dynamic hypoperfusion / conclusion endothelium / epithelium atrial / trial cardiotoxicity / activity nonfatal / fatal hemolysis / autohemolysis hematopoiesis / noises