calculated heart right atrium morphological measurement heart right atrium weight to body weight ratio 2018-12-20T14:59:58Z A calculated value in which the weight of the right atrium, the upper chamber on the right side of the heart which empties into the lower right left chamber, is divided by the total weight of the body and the result presented as a ratio, fraction, quotient or percentage, thus normalizing it to body weight. CMO:0002952 VT:0007027 clinical_measurement_ontology sjwang