Towards a theoretical understanding of stroke volume estimation with impedance cardiography.

Abstract:

:In electrical impedance cardiography, Kubicek's formula is often used to measure stroke volume from thoracic impedance variations synchronously to heart activity. To calculate stroke volume from impedance variations, the so-called outflow problem should be adequately solved. This outflow problem refers to the joint causes of impedance change due to blood entering the aorta from the heart, as well as blood leaving the aorta due to arterial runoff. The aim of this study was to investigate the Kubicek formula as a solution of the outflow problem. Kubicek's formula was theoretically investigated using a simple model of the volume-conducting properties of the thorax (two-cylinder model), as well as the hemodynamics of the systemic circulation (three-element "windkessel" model). The mathematical analysis showed that the outflow problem was not solved by the Kubicek formula. Moreover, this theoretical result was experimentally confirmed.

journal_name

Ann N Y Acad Sci

authors

Faes TJ,Raaijmakers E,Meijer JH,Goovaerts HG,Heethaar RM

doi

10.1111/j.1749-6632.1999.tb09459.x

subject

Has Abstract

pub_date

1999-04-20 00:00:00

pages

128-34

eissn

0077-8923

issn

1749-6632

journal_volume

873

pub_type

杂志文章
  • Examining Ca2+ extrusion of Na+/Ca2+-K+ exchangers.

    abstract::Na+/Ca2+-K+ exchangers (NCKX) are plasma membrane transporters that are thought to mainly mediate Ca2+ extrusion (along with K+) at the expense of the Na+ electrochemical gradient. However, because they are bidirectional, most assays have relied on measuring their activity in the reverse (Ca2+ import) mode. Herein we ...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章,评审

    doi:10.1196/annals.1387.056

    authors: Altimimi HF,Schnetkamp PP

    更新日期:2007-03-01 00:00:00

  • Genetic basis of endometriosis.

    abstract::Endometriosis is a complex gynecologic disorder that has long been recognized as showing heritable tendencies, with recurrence risks of 5-7% for first-degree relatives. Familial and epidemiologic studies support that this disease is a genetic disorder of polygenic/multifactorial inheritance. The current investigationa...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章,评审

    doi:10.1196/annals.1335.030

    authors: Bischoff F,Simpson JL

    更新日期:2004-12-01 00:00:00

  • Treatment of iron overload in the "ex-thalassemic". Report from the phlebotomy program.

    abstract::After successful marrow transplantation (BMT) iron overload remains an important cause of morbidity in Thalassemia. After BMT, patients have normal erythropoiesis capable of producing a hyperplastic response to phlebotomy so that this procedure can be contemplated as a method of mobilizing iron from overloaded tissues...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章,多中心研究

    doi:10.1111/j.1749-6632.1998.tb10485.x

    authors: Angelucci E,Muretto P,Lucarelli G,Ripalti M,Baronciani D,Erer B,Galimberti M,Annibali M,Giardini C,Gaziev D,Rapa S,Polchi P

    更新日期:1998-06-30 00:00:00

  • Identification of chronic cocaine-induced gene expression through dopamine d1 receptors by using cDNA microarrays.

    abstract::A major goal of drug abuse research is to understand the molecular mechanisms underlying the behavioral changes caused by repeated exposure to cocaine. Enduring behavioral changes, such as behavioral sensitization, can be induced in rodents by repeated cocaine administration. The neurobiological mechanisms underlying ...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章

    doi:10.1111/j.1749-6632.2002.tb04146.x

    authors: Zhang J,Zhang D,Xu M

    更新日期:2002-06-01 00:00:00

  • Strategies for balance rehabilitation: fall risk and treatment.

    abstract::Identification of fall risk for patients with known vestibular hypofunction is important because it affects the management and the level of independence of these patients. Patients with bilateral vestibular loss, overall, have a greater incidence of falls than the general community-dwelling population over the age of ...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章,评审

    doi:

    authors: Herdman SJ,Schubert MC,Tusa RJ

    更新日期:2001-10-01 00:00:00

  • Dual contacts between peptide agonist ligands and the secretin receptor directly established by photoaffinity labeling.

    abstract::Structural analysis of secretin in solution has demonstrated extended helical domains within both amino- and carboxyl-terminal halves, with a possible turn in between. However, the conformation of this peptide as it resides in its binding site within the receptor has not been established. In the work reported here, we...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章

    doi:10.1111/j.1749-6632.2000.tb07000.x

    authors: Dong M,Wang Y,Miller LJ

    更新日期:2000-01-01 00:00:00

  • Insights into ototoxicity. Analogies to nephrotoxicity.

    abstract::The most common ototoxic compounds in clinical practice are aminoglycoside antibiotics, cisplatin, and loop diuretics (ethacrynic acid and furosemide). These agents also have substantial renal effects in the form of nephrotoxicity or diuresis. The understanding of these renal effects may provide insight into ototoxic ...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章,评审

    doi:10.1111/j.1749-6632.1999.tb00278.x

    authors: Humes HD

    更新日期:1999-11-28 00:00:00

  • Engineering cellular trafficking via glycosyltransferase-programmed stereosubstitution.

    abstract::The proximate hurdle for cell trafficking to any anatomic site is the initial attachment of circulating cells to target tissue endothelium with sufficient strength to overcome prevailing forces of blood flow. E-selectin, an endothelial molecule that is inducibly expressed at all sites of inflammation, is a potent effe...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章,评审

    doi:10.1111/j.1749-6632.2011.06421.x

    authors: Sackstein R

    更新日期:2012-04-01 00:00:00

  • Therapy of presymptomatic FeLV-induced immunodeficiency syndrome with AZT in combination with alpha interferon.

    abstract::AZT inhibited replication of an immunodeficiency-inducing strain of feline leukemia virus (FeLV-FAIDS) in vitro at concentrations as low as 0.005 microgram/mL. This antiviral activity was augmented an additional 25-30% when AZT was combined with human recombinant alpha-interferon (2b) (IFN alpha). Administration of AZ...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章

    doi:10.1111/j.1749-6632.1990.tb17846.x

    authors: Hoover EA,Zeidner NS,Mullins JI

    更新日期:1990-01-01 00:00:00

  • Reproductive aging: theoretical perspectives, mechanisms, nonhuman models, and health correlates.

    abstract::Every 365.2421999 days--more or less--the earth rotates, revolves, wobbles, and precesses along an elliptical path around the sun. Those of us who survive the journey are a year older: we have aged one solar year. Some years we seem to age faster than other years; some people seem to age faster than other people; some...

    journal_title:Annals of the New York Academy of Sciences

    pub_type:

    doi:10.1111/j.1749-6632.2010.05700.x

    authors: Haaga J,O'Connor K,Weinstein M,Wise P

    更新日期:2010-08-01 00:00:00

  • Protecting the privacy of patient information in clinical networks: regulatory effectiveness analysis.

    abstract::Patient privacy is one of the major issues in the development of modern clinical information system networks. Such networks will have to demonstrate an appropriate concern for privacy as a precondition of operation. Regulatory effectiveness analysis is a novel technique for measuring compliance with a technological re...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章,评审

    doi:10.1111/j.1749-6632.1992.tb26090.x

    authors: Brannigan VM

    更新日期:1992-12-17 00:00:00

  • Hypergravity-induced increase in plasma catecholamine and corticosterone levels in telemetrically collected blood of rats during centrifugation.

    abstract::Rats subjected to various accelerations (+G) exhibited increased levels of plasma epinephrine (EPI), norepinephrine (NE), and corticosterone. However, the collection of blood was performed after a centrifugation finished, and therefore the levels could be affected by the process of deceleration. The aim of this study ...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章

    doi:10.1196/annals.1410.060

    authors: Petrak J,Mravec B,Jurani M,Baranovska M,Tillinger A,Hapala I,Frollo I,Kvetnanský R

    更新日期:2008-12-01 00:00:00

  • Stem cell transplantation across major genetic barriers.

    abstract::Megadose haploidentical transplants, mismatched at three HLA loci, engraft rapidly and durably without induction of graft-versus-host disease (GVHD). In vitro studies suggest that veto cells, contained in the population of hematopoietic progenitors, facilitate this favorable outcome. Cytotoxic T cells, not reactive ag...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章,评审

    doi:

    authors: Reisner Y

    更新日期:2001-06-01 00:00:00

  • ExoMars alternative escape trajectories with Soyuz/Fregat.

    abstract::The objectives of ExoMars are to inject an orbiter around Mars and to land a rover on the surface to look for possible traces of life. During the first stages of the feasibility analysis, the mass margin of the orbiter was very small for a direct transfer in the Soyuz/Fregat scenario. An analysis of the combined use o...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章

    doi:10.1196/annals.1370.011

    authors: Gil-Fernández J,Van Damme CC,Graziano M,Amata GB,Cogo F,Perino MA

    更新日期:2005-12-01 00:00:00

  • Does the expression of c-kit (CD117) in neuroendocrine tumors represent a target for therapy?

    abstract::Neuroendocrine tumors are very heterogeneous, develop from a variety of tissues, and can be difficult to diagnose. Without the clinical manifestation of metastases, it is often difficult to characterize them as malignant. Even so-called completely (R0) resected tumors can spread clinically visible metastases within a ...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章

    doi:10.1196/annals.1353.055

    authors: Koch CA,Gimm O,Vortmeyer AO,Al-Ali HK,Lamesch P,Ott R,Kluge R,Bierbach U,Tannapfel A

    更新日期:2006-08-01 00:00:00

  • Neocortex in early mammals and its subsequent variations.

    abstract::Neocortex is an important part of the mammalian brain that is quite different from its homologue of the dorsal cortex in the reptilian brain. Whereas dorsal cortex is small, thin, and composed of a single layer of neurons, neocortex is thick and has six layers, while being variable across species in size, number of fu...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章,评审

    doi:10.1111/j.1749-6632.2011.05981.x

    authors: Kaas JH

    更新日期:2011-04-01 00:00:00

  • IgA specific T-cell factor produced by a human T-T hybridoma.

    abstract::A human T-T hybridoma was produced, which was a fusion product between and HGPRT-deficient T-cell line, Jurkat 3, and an OKT4+ activated peripheral blood T-cell. The hybrid expressed a receptor for IgM Fc and was negative for IgA Fc. It was shown to produce a factor capable of specifically enhancing IgA production and...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章

    doi:10.1111/j.1749-6632.1983.tb26873.x

    authors: Mayer L,Fu SM,Kunkel HG

    更新日期:1983-06-30 00:00:00

  • Electrical brain responses to descriptive versus evaluative judgments of music.

    abstract::The present study was aimed at finding neural correlates of aesthetic versus descriptive listening of the same musical cadences. Results showed that aesthetic listening generated greater right frontocentral negativities than did descriptive listening, indicating distinct cortical mechanisms for aesthetic versus descri...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章

    doi:10.1196/annals.1284.018

    authors: Brattico E,Jacobsen T,De Baene W,Nakai N,Tervaniemi M

    更新日期:2003-11-01 00:00:00

  • Evidence for the conservation of an immunoreactive monokine network in invertebrates.

    abstract::Mytilus edulis, a marine bivalve mollusc, contains hemocytes that share certain properties with cells of the human monocyte-macrophage lineage. Because of this and previously reported similar responses to opioids between Mytilus hemocytes and human granulocytes, we determined whether Mytilus might also possess monokin...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章

    doi:10.1111/j.1749-6632.1992.tb49098.x

    authors: Hughes TK Jr,Smith EM,Leung MK,Stefano GB

    更新日期:1992-04-15 00:00:00

  • Regulation of angiogenesis by controlling VEGF receptor.

    abstract::The endothelial cells cultured in collagen gel caused upregulation of KDR expression, which resulted in an increase in tube formation. Endothelial cells exposed to high glucose (33 mmol/l) for 30 days increased the tube formation induced by VEGF, but not by serum and bFGF. Immunohistochemical study showed that KDR exp...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章

    doi:10.1111/j.1749-6632.2000.tb06315.x

    authors: Murota SI,Onodera M,Morita I

    更新日期:2000-05-01 00:00:00

  • Dendritic cell function in vivo during the steady state: a role in peripheral tolerance.

    abstract::The avoidance of autoimmunity requires mechanisms to actively silence or tolerize self reactive T cells in the periphery. During infection, dendritic cells are not only capturing microbial antigens, but also are processing self antigens from dying cells as well as innocuous environmental proteins. Since the dendritic ...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章,评审

    doi:10.1111/j.1749-6632.2003.tb06029.x

    authors: Steinman RM,Hawiger D,Liu K,Bonifaz L,Bonnyay D,Mahnke K,Iyoda T,Ravetch J,Dhodapkar M,Inaba K,Nussenzweig M

    更新日期:2003-04-01 00:00:00

  • Hydrological cycle changes under global warming and their effects on multiscale climate variability.

    abstract::Despite a globally uniform increase in the concentrations of emitted greenhouse gases, radiatively forced surface warming can have significant spatial variations. These define warming patterns that depend on preexisting climate states and through atmospheric and oceanic dynamics can drive changes of the hydrological c...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章,评审

    doi:10.1111/nyas.14335

    authors: Ma J,Zhou L,Foltz GR,Qu X,Ying J,Tokinaga H,Mechoso CR,Li J,Gu X

    更新日期:2020-07-01 00:00:00

  • Translational research of ghrelin.

    abstract::Gastrointestinal peptides play important roles regulating feeding and energy homeostasis. Most gastrointestinal peptides including glucagon like peptide-1, peptide YY, amylin, and oxytomodulin are anorectic, and only ghrelin is an orexigenic peptide. Ghrelin increases appetite, modulates energy balance, suppresses inf...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章,评审

    doi:10.1111/j.1749-6632.2010.05509.x

    authors: Ueno H,Shiiya T,Nakazato M

    更新日期:2010-07-01 00:00:00

  • DNA repair: the link between primary immunodeficiency and cancer.

    abstract::The adaptive component of the immune system depends greatly on the generation of genetic diversity provided by lymphocyte-specific genomic rearrangements. V(D)J recombination, class switch recombination (CSR), and somatic hypermutation (SHM) constitute complex and vulnerable processes that are orchestrated by a multit...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章,评审

    doi:10.1111/j.1749-6632.2011.06322.x

    authors: de Miranda NF,Björkman A,Pan-Hammarström Q

    更新日期:2011-12-01 00:00:00

  • Dopamine stimulation via infusion in the lateral ventricle.

    abstract::Continuous dopamine (DA) stimulation is a therapeutic approach that applies to the treatment of motor fluctuations due to pulsatile DA stimulation in Parkinson's disease (PD), to cure the abuse of drugs, such as cocaine or amphetamine (which produce short-lasting peaks of extracellular DA), and as a safe therapeutic a...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章

    doi:10.1196/annals.1369.031

    authors: Biagioni F,Busceti CL,Molinaro G,Battaglia G,Giorgi FS,Ruggieri S,Fornai F

    更新日期:2006-08-01 00:00:00

  • Saccadic palsy following cardiac surgery: a review and new hypothesis.

    abstract::The ocular motor system provides several advantages for studying the brain, including well-defined populations of neurons that contribute to specific eye movements. Generation of rapid eye movements (saccades) depends on excitatory burst neurons (EBN) and omnipause neurons (OPN) within the brainstem, both types of cel...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章,评审

    doi:10.1111/nyas.12666

    authors: Eggers SD,Horn AK,Roeber S,Härtig W,Nair G,Reich DS,Leigh RJ

    更新日期:2015-04-01 00:00:00

  • Retinoid-binding proteins in plasma and in cells.

    abstract::Much has been learned during the past decade about the specific retinoid-binding proteins that exist in plasma, and in the intracellular compartment in a number of tissues. Vitamin A is mobilized from liver stores and transported in plasma in the form of the lipid alcohol retinol, bound to a specific transport protein...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章

    doi:10.1111/j.1749-6632.1981.tb12738.x

    authors: Goodman DS

    更新日期:1981-02-27 00:00:00

  • Phenotypic flexibility of skeletal muscles during long-distance migration of garden warblers: muscle changes are differentially related to body mass.

    abstract::Mass changes of skeletal muscles occur in a variety of species during the migratory period. Phenotypic flexibility of flight muscle mass is considered to represent adaptations of the flight muscle to changing power requirements associated with changes in body mass. We analyzed the relationship between muscle masses an...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章

    doi:10.1196/annals.1343.025

    authors: Bauchinger U,Biebach H

    更新日期:2005-06-01 00:00:00

  • Ketosis leads to increased methylglyoxal production on the Atkins diet.

    abstract::In the popular and widely used Atkins diet, the body burns fat as its main fuel. This process produces ketosis and hence increased levels of beta-hydroxybutyrate (BOB) acetoacetate (AcAc) and its by-products acetone and acetol. These products are potential precursors of the glycotoxin methylglyoxal. Since methylglyoxa...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章

    doi:10.1196/annals.1333.025

    authors: Beisswenger BG,Delucia EM,Lapoint N,Sanford RJ,Beisswenger PJ

    更新日期:2005-06-01 00:00:00

  • Interleukin-2 fusion toxin: targeted therapy for cutaneous T cell lymphoma.

    abstract::The interleukin (IL)-2 receptor has proved an attractive target for T cell-directed therapies. Agents including monoclonal antibodies, single-chain antibody immunoconjugates, radioimmunoconjugates, and, most recently, ligand fusion toxins have demonstrated activity in vitro and in clinical trials in both hematologic m...

    journal_title:Annals of the New York Academy of Sciences

    pub_type: 杂志文章,评审

    doi:10.1111/j.1749-6632.2001.tb03720.x

    authors: Foss FM

    更新日期:2001-09-01 00:00:00