heart ventricle septal wall thickness heart interventricular end-diastolic septal wall thickness VT:0007086 IVSd The thickness, width or depth of the septal wall of the heart ventricles (that is, the portion of the wall between the left and right ventricles that is shared between the two) at the end of diastole when the heart muscle is maximally relaxed. heart interventricular septum end-diastolic thickness 2018-05-15T17:12:15Z heart interventricular end-diastolic wall thickness CMO:0002791 clinical_measurement_ontology jrsmith