An instrument for determining and registering the variations in the size or volume of a limb, as the arm or leg, and hence the variations in the amount of blood in the limb.
An instrument for determining and registering variations in the amount of blood present or passing through an organ.
a measuring instrument for measuring changes in volume of a part or organ or whole body (usually resulting from fluctuations in the amount of blood it contains)
a device for finding variations in size due to vascular changes
a device for measuring and recording changes in volume of a part, organ, or whole body
a term commonly used to describe an instrument that measures the volume of blood that passes through a limb or organ
A device used for finding variations in size of a segment of the body due to variations in the amount of blood passing through or contained in that segment.
An instrument for determining and registering variations in the size of an organ part or limb, and in the amount of blood present or passing through it.
A plethysmograph is an instrument for measuring changes in volume within an organ or whole body (usually resulting from fluctuations in the amount of blood or air it contains).