+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Echo-Doppler diagnosis of mitral stenoses

, : Echo-Doppler diagnosis of mitral stenoses. Annales de Cardiologie et D'angeiologie 37(9): 485-491

The Doppler spectrum diagnosis of mitral stenosis includes two stages: positive diagnosis and diagnosis of gravity. The positive diagnosis rests on the increase of the maximal velocity of the transmitral flow, the persistence of this acceleration during the entire diastole with decrease of the deceleration gradient, more marked when the stenosis is narrower, and the enlargement of the spectrum. The diagnosis of gravity rests on the measurement of the mean gradient by applying Bernouilli's equation and the point by point quadratic transformation of the transmitral velocity curve obtained by Doppler and the measurement of the mitral area either by measurement of the half-decrease time in pressure or by applying the continuity equation. This last method advocated by Nakatani is particularly interesting in case or significant aortic insufficiency which often invalidates the application of T1/2.


PMID: 3066271

Other references

Miller, M.A.; Kolb, P.E.; Raskind, M.A., 1993: A method for simultaneous detection of multiple mRNAs using digoxigenin and radioisotopic cRNA probes. We present a simple, reliable method for simultaneous detection of two distinct mRNAs within the same tissue sample by double in situ hybridization histochemistry. Sections are hybridized with a cocktail of radiolabeled and digoxigenin-labeled cRN...

Jennings, B.; Fane, B.A., 1997: Genetic analysis of the vphi-174 DNA binding protein. The vphi-174 J protein is 37 amino acids in length and contains 12 basic residues. There are no acidic amino acids in the protein. The basic residues are concentrated in two clusters in the N-terminus which are separated by a proline-rich region....

Jheeta, K., 2002: Dementia care. All in the mind. Nursing Times 97(9): 27-27

Darwish Y.M.; Fadda A.A., 1986: Synthesis and biological evaluation of some ddt analogues. Some DDT analogues (I-III) have been prepared by replacing the two chlorine atoms in the aromatic rings by bioactive, selective and biodegradable groups such as unsaturated hydrocarbon chains, epoxide and crown ether rings. The biological activity...

Anonymous, 1983: Helminths of farm animals and poultry. Bibliography of Soviet literature for 1980-1982 - 498 titles, of foreign literature for 1981-1982 - 239 titles. The references are arranged in classified sections: biology of the parasites, epizootiology, pathogenesis and diagnosis, treatment, prophylaxis and control, anthelmintics, followed by individual helminthiases in systematic groups. Within each sect...

Laflamme L.; Taillefer R.; Duranceau A.; Verdy M.; Church W., 1988: Medullary thyroid carcinoma localization of a mediastinal metastasis with iodine 131 mibg. An I-131 metaiodobenzylguanidine (MIBG) scan was performed in a patient with a familial history of multiple endocrine neoplasia (MEN) type 2 and recurrent medullary thyroid carcinoma (MTC). The scan revealed a mediastinal metastasis from her MTC a...

Blajan, L., 1982: National and international reporting services International Office of Epizootics. Epidemiology in animal health: proceedings of a symposium held at the British Veterinary Association's Centenary Congress Reading 22nd 25th September 1982: 8

Imade, G.E.; Baker, H.W.; de Kretser, D.M.; Hedger, M.P., 1997: Immunosuppressive activities in the seminal plasma of infertile men: relationship to sperm antibodies and autoimmunity. Semen samples from infertile men were assessed for sperm autoimmunity by direct immunobead assay for immunoglobulin (Ig)A and IgG sperm antibodies and mucus penetration test. Immunosuppressive activity in seminal plasma was measured by an in-vitro...

Fröhlich, F.; Theis, F.J.; Rädler, J.O.; Hasenauer, J., 2017: Parameter estimation for dynamical systems with discrete events and logical operations. Ordinary differential equation (ODE) models are frequently used to describe the dynamic behaviour of biochemical processes. Such ODE models are often extended by events to describe the effect of fast latent processes on the process dynamics. To ex...

Perry, R., 1944: The drumming of Woodpeckers. Country Life London, 95: 1036