Title:
【発明の名称】心拍出量を非侵襲的に測定する装置及び方法
Document Type and Number:
Japanese Patent JP2001506158
Kind Code:
A
Abstract:
Apparatus and methods for non-invasively determining cardiac output using partial re-breathing techniques are disclosed in which the apparatus is constructed with an instantaneously adjustable deadspace for accommodating differences in breathing capacities of various patients. The apparatus is constructed of inexpensive elements, including a single two-way valve which renders the apparatus very simple to use and inexpensive so that the unit may be readily disposable. The method of the invention provides a novel means of estimating cardiac output based on alveolar CO2 values rather than end-tidal CO2 values as previously practiced. A program for calculating cardiac output is also disclosed.
Inventors:
Or, Joseph A.
Coford, Scott A.
Westen Scow, Dwayne
Jaffa, Michael Bee.
Coford, Scott A.
Westen Scow, Dwayne
Jaffa, Michael Bee.
Application Number:
JP52805998A
Publication Date:
May 15, 2001
Filing Date:
December 18, 1997
Export Citation:
Assignee:
Novametrics Medical Systems, Inc.
International Classes:
A61B5/029; A61B5/026; A61B5/08; A61B5/083; A61B5/087; A61B5/097; A61B10/00; A61M16/00; G01N33/00; (IPC1-7): A61B5/026
Attorney, Agent or Firm:
Hironobu Onda