Armando Federico

US Patent:

39851230, Oct 12, 1976

Filed:

Jul 17, 1975

Appl. No.:

5/596907

Inventors:

George A. Herzlinger - Belmont MA
Armando Federico - Needham MA
Arthur R. Kantrowitz - Cambridge MA

Assignee:

Avco Everett Research Laboratory, Inc. - Everett MA

International Classification:

A61B 502

US Classification:

128 205F

Abstract:

A cardiac output monitor. The monitor receives signals representing radial arterial pressure, balloon pressure, balloon drive and balloon volume from an intra-aortic balloon pumping system. These signals are processed to define balloon depletion pressure (P. sub. 1), ventricle ejection pressure (P. sub. 2), balloon volume (BV) and heart rate (HR). The monitor displays the cardiac output according to Cardiac output = (P. sub. 2 /P. sub. 1) (BV) (HR) the monitor also indicates certain improper pumping system operations and can provide a continuous display.