Biomaterial Database

Hemodynamic analysis could resolve the pulsatile blood flow controversy. 1994

G Wright

Department of Biomedical Engineering and Medical Physics, University of Keele, Staffordshire, England.

Reasons for fluctuations in the popularity of pulsatile cardiopulmonary bypass are discussed. The advantages of pulsatile flow have previously been stated in terms of physiologic parameters. This has produced a weak theoretic framework that has led to serious misunderstandings of the fundamental mechanical properties of pulsatile flow. Failure to consider these properties in the past may have allowed modified roller pumps to be accepted as "pulsatile," even though their pulsatile power outputs are small compared with those of the human heart. A fresh approach is required in which pulsatile blood flow is analyzed in terms of hemodynamic power and impedance parameters.

UI	MeSH Term	Description	Entries
D011673	Pulsatile Flow	Rhythmic, intermittent propagation of a fluid through a BLOOD VESSEL or piping system, in contrast to constant, smooth propagation, which produces laminar flow.	Flow, Pulsating,Perfusion, Pulsatile,Flow, Pulsatile,Flows, Pulsatile,Flows, Pulsating,Perfusions, Pulsatile,Pulsatile Flows,Pulsatile Perfusion,Pulsatile Perfusions,Pulsating Flow,Pulsating Flows
D002315	Cardiopulmonary Bypass	Diversion of the flow of blood from the entrance of the right atrium directly to the aorta (or femoral artery) via an oxygenator thus bypassing both the heart and lungs.	Heart-Lung Bypass,Bypass, Cardiopulmonary,Bypass, Heart-Lung,Bypasses, Cardiopulmonary,Bypasses, Heart-Lung,Cardiopulmonary Bypasses,Heart Lung Bypass,Heart-Lung Bypasses
D006439	Hemodynamics	The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM.	Hemodynamic
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia