RESEARCH ON THE DYNAMICS OF PULSATILE BLOOD FLOWS IN THE HUMAN PULMONARY ARTERIAL SYSTEM.
Final technical rept., 1 Apr 58-31 Mar 59,
OXFORD UNIV (ENGLAND) RADCLIFFE INFIRMARY
Pagination or Media Count:
An apparatus was designed to combine continuous blood flow measurement with continuous pulmonary vascular pressure measurement in an attempt to investigate the pulsatile pressure-flow relationships in the pulmonary arterial system of man. A sensitive meter measuring gas flow directly employs a pneumatic amplifying system and is virtually drift free. The flow meter design is essentially a pneumatic servo mechanism maintaining a constant pressure within the plethysmograph. Changes in plethysmograph pressure are sensed by a sensitive diaphragm, movement of which is detected by a fine nozzle and pneumatic amplifier unit. Air is then supplied back to the plethysmograph by the amplifier output until the diaphragm position is restored. Author
- Anatomy and Physiology
- Medical Facilities, Equipment and Supplies