Glossary - R
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Arterial resistance of a vascular bed is determined by the vascular bed’s characteristics, such as the number and diameter of vessels, and relative vasodilation and vasoconstriction. Low resistance vascular beds demonstrate abundant arterial perfusion and forward arterial flow during the entire cardiac cycle. Examples of low resistance arterial bed include: brain, kidney, spleen, placenta. In contrast, high resistance arterial bed demonstrates lower volume flows and little or no end-diastolic forward flow. Examples of high resistance arterial bed include: extremities, and scalp. Changes in resistance of a vessel may occur due to a wide range of physiologic and pathologic states affecting the feeding artery or the vascular bed itself, such as: stenosis, occlusion, infection, organ atrophy, presence of AV malformation, but also changes in temperature, exercise, and others.
Articles that contain the term Resistance
Subclavian Steal Syndrome
Martin Necas 04 May 2003 0 images
Vascular > Clinical Guide
Haemodialysis Access Grafts
Martin Necas/Edited by L.Taylor-Turner 28/07/2003 04 May 2003 6 images
Vascular > Clinical Guide
Carotid Duplex
Martin Necas 05 May 2003 10 images
Vascular > Clinical Guide
Arterial Bypass Graft Duplex
Martin Necas 12 May 2003 6 images
Vascular > Clinical Guide
Mesenteric Ischaemia
Winkle Yung AMS Mast Health Sc (U/S),compiled by L.Taylor-Turner 27 July 2003 0 images
Vascular > Clinical Guide
Renal Artery Stenosis
Vicki Grayndler RN DMU(Vasc) compiled by L.Taylor-Turner. 06 August 2003 6 images
Vascular > Clinical Guide
Fistula between main renal artery and vein.
Mark Stieler 31 August 2003 2 images
Vascular > Case Study
Carotid Body Tumour
Martin Necas 02 September 2003 6 images
Vascular > Case Study
Arteriovenous Malformations
Dr D Mclean, Louise Vigeant RDMS 01 January 2001 2 images
Obstetric > Clinical Guide
Branchial Cleft Cyst
Drs Challlis, Farine, Morrow, Ritchie, Ryan; Dr Murray Miskin 01 January 2001 2 images
Obstetric > Clinical Guide
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