Evaluation of the elasticity and characteristic impedance of the ascending aorta in man
- 1 July 1978
- journal article
- research article
- Published by Oxford University Press (OUP) in Cardiovascular Research
- Vol. 12 (7) , 401-406
- https://doi.org/10.1093/cvr/12.7.401
Abstract
In 30 patients, simultaneous measurements of ascending aortic pressure and diameter were performed, allowing one to evaluate: (1) the influence of age, the aortic diastolic pressure, and the radius on the aortic elasticity; (2) the correlations between characteristic impedance of the aorta (Zo), systemic arterial resistance, age and diastolic aortic pressure; and (3) the importance of Zo when comparing two indices of left ventricle performance; one during isovolumic phase ([dP/dt]/Pt) max and the other during the outflow phase (maximum acceleration of aortic blood flow).Keywords
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