Apparatus and methods for non-invasively determining the cardiac output or pulmonary capillary blood flow of a patient using partial re-breathing techniques. The apparatus includes a substantially instantaneously adjustable deadspace volume for accommodating differences in sizes or breathing capacities...http://www.google.es/patents/US6648832?utm_source=gb-gplus-sharePatente US6648832 - Apparatus and method for non-invasively measuring cardiac output
Apparatus and method for non-invasively measuring cardiac output
