Accession Number:

AD0631918

Title:

RESEARCH ON THE DYNAMICS OF PULSATILE BLOOD FLOWS IN THE HUMAN PULMONARY ARTERIAL SYSTEM.

Descriptive Note:

Final technical rept., 1 Apr 58-31 Mar 59,

Corporate Author:

OXFORD UNIV (ENGLAND) RADCLIFFE INFIRMARY

Report Date:

1959-03-31

Pagination or Media Count:

7.0

Abstract:

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

Subject Categories:

  • Anatomy and Physiology
  • Medical Facilities, Equipment and Supplies

Distribution Statement:

APPROVED FOR PUBLIC RELEASE