脈波の伝達に関する研究
1967 年 16 巻 2 号 p. 31-37
詳細
1967 年 16 巻 2 号 p. 31-37
The simultaneous recording of ECG and the pulse wave at the big toe was obtained. The time of transmission of the pulse wave was expressed as the RP-index which was obtained by dividing the interval between the R waves in ECG and the pulse wave by the distance between the tip of the xyphoid process and the medial malleolus. Using the RP-index as the indicator of changes of blood vessels, its relations with the age, sex, the place of residence, the blood pressure, change of retinal vessels, ECG changes, vascular fragility and serum cholesterol level were studied. Its changes after exercise were also studied.
1) No significant correlation was noted between the age and the RP-index.
2) No significant difference in the RP-index was noted between the male and the female and between the resident of the urban area and those of the rural area.
3) A significant negative correlation was noted between the RP-index and the blood pressure, especially the diastolic pressure.
4) The RP-index tended to be smaller in individuals with arteriosclerotic changes of retinal vessels than in those without them (p<0.01-0.05) .
5) The RP-index tended to be smaller in individuals with signs of hypertrophy or myocarial damage in ECG than in those without them.
6) The RP-index tended to decrease as vascular fragility increased (p<0.01-0.05) .
7) No correlation was found between the RP-index and the serum total cholesterol level.
8) The RP-index was noted to increase with exercise loading.
