Heart muscle (hypertrophic cardiomyopathy) (VIDEO) Allen Institute This video is under embargo. Please login to access this video. Caption Severe thickening of the heart muscle in a child with hypertrophic cardiomyopathy. Credit Dr. Daniel Bernstein, Stanford University Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.