heart left ventricle end-systolic diameter heart left ventricle end-systolic internal diameter The diameter across the inside of the left ventricle of the heart at the end of systole, that is, when the heart muscle is maximally contracted, and usually corresponds to its smallest diameter. left ventricular internal dimension at systole LVIDs heart left ventricular end-systolic internal diameter clinical_measurement_ontology slaulede CMO:0003851 2021-10-26T15:27:30Z