Measurement of aortic compliance from the transthoracic admittance plethysmogram in the living dog

被引：3

作者：

Ito, H. ^{[1
]}

Yamakoshi, K.I. ^{[1
]}

Shimazu, H. ^{[1
]}

Togawa, T. ^{[1
]}

机构：

[1] Dept. Physiol., Kyorin Univ. Sch. Med., Shinkawa, Mitaka, Japan

来源：

Medical and Biological Engineering and Computing | 1977年 / 15卷 / 06期

关键词：

BIOMEDICAL ENGINEERING - Hemodynamics - FLOW OF FLUIDS - Pulsatile Flow;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

An attempt was made to measure the compliance and elastic modulus of the thoracic aorta from simultaneous recordings of the transthoracic admittance plethysmogram and intra-aortic pressure in living dogs. Initially, the compliance values determined by this method were correlated with those measured from the volume-pressure relationships in three different silicone-rubber tubes; these two groups of values were consistent with each other within the error range of plus or minus 10%. The mean value of the compliance of the thoracic aortas in four normal dogs (13-15 kg) measured by this method was 0. 00387 plus or minus 0. 00100 ml/mmHg cm. The elastic modulus E and velocity v of the pulse wave were calculated from this value; E equals 2. 71 plus or minus 0. 79 multiplied by 10**5 dN/m**2 and v equals 4. 52 plus or minus 2. 44 m/s. These data were compared with those reported previously by other investigators. Taking simplicity, safety and practicability into consideration, it was concluded that this method would only be useful in clinics for the rough estimation of the elastic properties of the thoracic aorta.

引用

页码：618 / 626