[Systolic periods in dependence of age].

In 278 healthy probands in the age of 23 to 80 years were measured the systolic periods and examined in dependence of age. There are found the following results: 1. from the youngest to the oldest group there is a small, statistically not significant increase of the middle systolic period. 2. the presphygmic phase (PEP) and the frequence-corrected interval (PEPI) show a small increase of the middle values in the first four age steps. Only after the age of 60 years is a clear increase of PEP and PEPI. 3. the expulsion time (LVET) and the expulsion index (LVETI) show in an increasing tendency of the mean values no significant difference of the mean value in the age groups. 4. the quotient LVET/PEP follows the course of PEP and PEPI. There is supposed, that the clear statistically significant increase of the mean value of the presphygmic phase and the presphygmic index after the age of 60 years cannot not be reduced to a "physiologic age insufficiency of the heart", but its cause is founded in asymptomatic courses of the coronary heart disease or other defined heart diseases.