Editing Cardiac output (section)

===Combined cardiac output===
Combined cardiac output is the sum of the outputs of the right and left sides of the heart. It is a useful measurement in [[fetal circulation]], where cardiac outputs from both sides of the heart work partly in parallel by the [[Foramen ovale (heart)|foramen ovale]] and [[ductus arteriosus]], which directly supply the [[systemic circulation]].<ref name=boron1197>{{cite book | first = Walter F. | last = Boron | name-list-style = vanc |title=Medical Physiology: A Cellular And Molecular Approaoch |publisher=Elsevier/Saunders |year=2003 |page=1197 |isbn=978-1-4160-2328-9 }}{{page?|date=August 2021}}</ref>