BIOMAT Database Logo BIOMAT Database Logo

Validation of thermal techniques for measurement of pelvic organ blood flows in the nonpregnant sheep: comparison with transit-time ultrasonic and microsphere measurements of blood flow. 1988

N J Randall, and R W Beard, and I A Sutherland, and J P Figueroa, and C J Drost, and P W Nathanielsz
Department of Obstetrics and Gynaecology, St. Mary's Hospital Medical School, London.

Data obtained from a thermal system capable of measuring changes in organ temperature as well as tissue thermal clearance in the uterus and vagina have been compared with blood flow measured continuously with a transit-time ultrasound volume-flow sensor placed around the common internal iliac artery and intermittently with radioactive microspheres in the chronically instrumented nonpregnant sheep. Temperature changes in both the uterus and the vagina correlated well with blood flow changes measured by both techniques after intravenous administration of estradiol or norepinephrine. Thermal clearance did not correlate well with blood flow in the vagina or uterus. These methods may have value in the investigation of blood flow patterns in various clinical situations such as the pelvic pain syndrome and early pregnancy.

UI MeSH Term Description Entries
D007083 Iliac Artery Either of two large arteries originating from the abdominal aorta; they supply blood to the pelvis, abdominal wall and legs. Deep Circumflex Iliac Artery,Arteries, Iliac,Artery, Iliac,Iliac Arteries
D008722 Methods A series of steps taken in order to conduct research. Techniques,Methodological Studies,Methodological Study,Procedures,Studies, Methodological,Study, Methodological,Method,Procedure,Technique
D008863 Microspheres Small uniformly-sized spherical particles, of micrometer dimensions, frequently labeled with radioisotopes or various reagents acting as tags or markers. Latex Beads,Latex Particles,Latex Spheres,Microbeads,Bead, Latex,Beads, Latex,Latex Bead,Latex Particle,Latex Sphere,Microbead,Microsphere,Particle, Latex,Particles, Latex,Sphere, Latex,Spheres, Latex
D010388 Pelvis The space or compartment surrounded by the pelvic girdle (bony pelvis). It is subdivided into the greater pelvis and LESSER PELVIS. The pelvic girdle is formed by the PELVIC BONES and SACRUM. Pelvic Region,Region, Pelvic
D011868 Radioisotopes Isotopes that exhibit radioactivity and undergo radioactive decay. (From Grant & Hackh's Chemical Dictionary, 5th ed & McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Daughter Isotope,Daughter Nuclide,Radioactive Isotope,Radioactive Isotopes,Radiogenic Isotope,Radioisotope,Radionuclide,Radionuclides,Daughter Nuclides,Daugter Isotopes,Radiogenic Isotopes,Isotope, Daughter,Isotope, Radioactive,Isotope, Radiogenic,Isotopes, Daugter,Isotopes, Radioactive,Isotopes, Radiogenic,Nuclide, Daughter,Nuclides, Daughter
D012039 Regional Blood Flow The flow of BLOOD through or around an organ or region of the body. Blood Flow, Regional,Blood Flows, Regional,Flow, Regional Blood,Flows, Regional Blood,Regional Blood Flows
D005260 Female Females
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
D012212 Rheology The study of the deformation and flow of matter, usually liquids or fluids, and of the plastic flow of solids. The concept covers consistency, dilatancy, liquefaction, resistance to flow, shearing, thixotrophy, and VISCOSITY. Flowmetry,Velocimetry,Velocimetries
D012756 Sheep Any of the ruminant mammals with curved horns in the genus Ovis, family Bovidae. They possess lachrymal grooves and interdigital glands, which are absent in GOATS. Ovis,Sheep, Dall,Dall Sheep,Ovis dalli

Related Publications

N J Randall, and R W Beard, and I A Sutherland, and J P Figueroa, and C J Drost, and P W Nathanielsz
Validation of miniature ultrasonic transit-time flow probes for measurement of renal blood flow in rats.
January 1995, The American journal of physiology,
N J Randall, and R W Beard, and I A Sutherland, and J P Figueroa, and C J Drost, and P W Nathanielsz
Comparison of steady-state diffusion and transit time ultrasonic measurements of umbilical blood flow in the chronic fetal sheep preparation.
May 1996, American journal of obstetrics and gynecology,
N J Randall, and R W Beard, and I A Sutherland, and J P Figueroa, and C J Drost, and P W Nathanielsz
Thermal aspects of uterine blood flow in nonpregnant sheep.
November 1970, American journal of obstetrics and gynecology,
N J Randall, and R W Beard, and I A Sutherland, and J P Figueroa, and C J Drost, and P W Nathanielsz
Ultrasonic techniques for measurement of blood flow.
April 1970, Pennsylvania medicine,
N J Randall, and R W Beard, and I A Sutherland, and J P Figueroa, and C J Drost, and P W Nathanielsz
Technical note: measuring portal blood flow in sheep using an ultrasonic transit time flow probe.
October 1998, Journal of animal science,
N J Randall, and R W Beard, and I A Sutherland, and J P Figueroa, and C J Drost, and P W Nathanielsz
Skin blood flow in sheep: comparison of xenon-133 washout and radioactive microsphere techniques.
September 1987, Journal of applied physiology (Bethesda, Md. : 1985),
N J Randall, and R W Beard, and I A Sutherland, and J P Figueroa, and C J Drost, and P W Nathanielsz
Transit time flow measurement: experimental validation and comparison of three different systems.
July 2000, The Annals of thoracic surgery,
N J Randall, and R W Beard, and I A Sutherland, and J P Figueroa, and C J Drost, and P W Nathanielsz
Developments in non-radioactive microsphere techniques for blood flow measurement.
October 1994, Cardiovascular research,
N J Randall, and R W Beard, and I A Sutherland, and J P Figueroa, and C J Drost, and P W Nathanielsz
Evaluation of a transit-time system for the chronic measurement of blood flow in conscious sheep.
February 1995, Journal of applied physiology (Bethesda, Md. : 1985),
N J Randall, and R W Beard, and I A Sutherland, and J P Figueroa, and C J Drost, and P W Nathanielsz
Flow measurement at the pump head of centrifugal pumps: comparison of ultrasonic transit time and ultrasonic Doppler systems.
July 1997, Artificial organs,
Copied contents to your clipboard!