[Cardiovascular system of normal aged subjects. Cardiovascular senescence].
The cardiovascular system of the elderly is characterised by (i) an increased characteristic impedance of the big vessels, without hypertension; (ii) a cardiac index unchanged at rest and during submaximal exercising, despite a diminished VO2 max; (iii) a diastolic dysfunction with reduced rapid early filling (E wave at echo) and enhanced atrial systole (A wave); (iv) benign arrhythmias; (v) a reduced coronary reserve and an increased sensitivity to ischemia; (vi) an efficacy of converting enzyme inhibitors remaining unchanged, despite an altered renin-agiotensin system.
D000368:Aged / Q000502:physiology*; D000375:Aging / Q000502:physiology*; D002319:Cardiovascular System / Q000254:growth & development*; D006801:Humans; D012016:Reference Values
Système cardiovasculaire du sujet âgé normal. Sénescence cardiovasculaire.