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A new model of arterial hemodynamics


, : A new model of arterial hemodynamics. Physiologie 20(3): 195-204

The determination of arterial blood flow parameters on the basis of ultrasound investigation requires a new hydrodynamic model of arterial circulation. Unlike previous research (Womersley, Bergel) considering the arterial pressure of its gradients to be known, the present model uses blood flow velocity and arterial radius magnitude easily obtained by ultrasound (Doppler effect). Processing these data requires the thorough analysis of rheological characteristics of blood flow and of arterial wall behaviour (elastic deformability). It has been assumed that: a) blood is a homogeneous and isotropic fluid; b) the artery has a cylindrical symmetry of a circular cross-section at any time moment; c) the pressure in the artery cross-section is constant. Because arterial dynamics has an undulatory character the Fourier analysis of the modified Navier-Stokes equations has been used. Finally, a simplified relation for blood pressure determination has been obtained.

US$29.90

PMID: 6417699


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Shimada, K.; Tabuse, K.; Kono, N.; Katsumi, M.; Yamamoto, H.; Yamamoto, Y.; Endo, A., 1983: Clinical investigation of intratumoral OK-432 administration. The clinical effect of intratumoral administration of OK-432 was evaluated. The patients with nonresectable advanced cancer were divided into three groups according to administration method of OK-432 at laparotomy: Group I; Intratumoral administra...

Beckermann, S.; Galloway, S., 1989: Elective resection of the liver: nursing care. Until recently, surgical resection of the liver was done mainly for benign or traumatic conditions. Liver resections are now an accepted treatment for primary and some metastatic cancers of the liver. Nurses play an important role in the managemen...

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Camprubi, A.; Pinochet, J.; Calvet, C.; Estaun, V., 1993: Effects of the root-lesion nematode Pratylenchus vulnus and the vesicular-arbuscular mycorrhizal fungus Glomus mosseae on the growth of three plum rootstocks. The effects of Pratylenchus vulnus and the endomycorrhizal fungus Glomus mosseae on growth of Myrobalan 605, Marianna 2624 and San Julian 655-2 plum rootstocks were measured under shadehouse conditions in the field for two growing seasons (1990-91...

Mccallum, M.L.; Mccallum, J.L., 2005: Publication trends of natural history and field studies in herpetology. Although natural history studies provide important information on the life histories of amphibians and reptiles, their publication has gradually declined over recent decades. We compared publication of natural history and total articles in Herpeto...

Granitov, V.M.; Starosel'skiĭ, D.V.; Startseva, G.G.; Toropchina, T.I., 1990: The differential diagnosis of acute intestinal infections. The authors evaluate contemporary possibilities of clinico-epidemiological and laboratory diagnosis of intestinal yersiniosis in the clinical practice. Data are reported on infestation of the environment with yersiniosis pathogen in this territory...

Li, B.; He, H.; Liao, X.; Fan, H.; Zhang, X., 2012: A review of research progress on biological effects about nanometer scaffold for bone tissue engineering. Quite a few orthopedics experts have fabricated some novel bone scaffolds with nanotechnology and have carried out some researches on nano-biological effects. The study of the biological effects about nano-biomaterials can facilitate the understan...

Meisling Kristian E.; Weldon R.J., 1986: Cenozoic uplift of the San Bernardino Mountains; possible thrusting across the San Andreas Fault. Abstracts with Programs - Geological Society of America 18(2): 157

Haag, J.R., 1939: The calcium and phosphorus contents of chickens of various ages. The Ca and P contents of the bodies of White Leghorn chickens were detd. for the period from birth to 20 wks. of age. The Ca/P content ratio varies from 1.3 at birth to 1.7 at 20 wks. of age. During the earlier wks. of life the Ca/P storage ratio...

Messing R.O.; Rawlings D.; Ferriero D.M., 1989: Empiric praziquantel therapy and early diagnosis of solitary lesions in neurocysticercosis. Neurology 39(3 SUPPL 1): 390