the size of the left upper chamber or the heart is one measure or cardiovascular health. the paper “ left atrial size increases with body mass index in children “ international journal of cardiology [...

the size of the left upper chamber or the heart is one measure or cardiovascular health. the paper “ left atrial size increases with body mass index in children “ international journal of cardiology [ 2009 ] : 1-7) described a study in which the left atrial size was measured for a large number of children of age 5 to 15 years. based on this data the authors concluded that for healthy children, left atrial diameter was approximately normally distributed with a mean of 26.4 mm and a standard deviation of 4.2 mm. round all answers to four decimal places