Sökning: "autonomic blockade"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden autonomic blockade.

  1. 1. Spectral analysis of the heart rate variability : a methodological study

    Författare :Urban Niklasson; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Heart-rate variability; R-R interval; cardiac autonomic function; spectral analysis; IPFM model;

    Sammanfattning : Heart rate and other cardiovascular variables are not steady but fluctuate over time. The evolution of computer technology the last 2 decades has made detailed analysis of the fluctuations possible and has focused the attention to the information content of the variability. LÄS MER

  3. 2. Hypertrophic cardiomyopathy in Northern Sweden : with special emphasis on molecular genetics

    Författare :Stellan Mörner; Åke Hjalmarson; Umeå universitet; []
    Nyckelord :Hypertrophic cardiomyopathy; genetics; autonomic nervous system; familial amyloid polyneuropathy; echocardiography; Epidemiology; epidemiologi;

    Sammanfattning : Hypertrophic cardiomyopathy (HCM) is a heterogeneous, often familial disease, characterized by cardiac hypertrophy, predominantly affecting the interventricular septum. To date, no study has systematically analysed the genetic and phenotypic aspects of the disease in a Swedish population. LÄS MER

  4. 3. On the Autonomic Control of Blood Flow and Secretion in Salivary Glands. Functional and morphological aspects on muscarinic receptor subtypes in different species

    Författare :Anders Ryberg; Göteborgs universitet; []
    Nyckelord :Muscarinic receptor subtype; neuronal; non-neuronal; expression; secretion; blood flow; salivary gland; human; rat; sheep;

    Sammanfattning : Parasympathetic nervous activity is the principal stimulus for evoking fluid responses within salivary glands. Concomitantly to the onset of this response, the blood flow increases. LÄS MER

  5. 4. Beat-to-beat variability of QRS amplitude and heart rate in ischemic heart disease : diagnostic potentials

    Författare :Inger Hagerman; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :autonomic blockade; beat-to-beat variability; chaos; coronary arterydisease; correlation dimension; dobutamine; ECG; electrical heterogeneity; fractal dimension; heart rate variability; Lyapunov exponent; nonlinear; QRSvariance; surrogate data;

    Sammanfattning : The diagnostic potential of beat-to-beat QRS amplitude variability in patients with coronary artery disease (CAD) was evaluated with variance ECG and compared to exercise stress test and myocardial scintigraphy (SPECT). Two high prevalence populations of 199 and 166 patients each were investigated. LÄS MER

  7. 5. Heart rate variability in patients with stable angina pectoris

    Författare :Inge Björkander; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Ambulatory electrocardiographic registrations; autonomic nervous system; coronary artery disease; differential index; heart rate variability; prognosis;

    Sammanfattning : The rate and modulation of the heart beat (i.e. heart rate variability; HRV) are controlled by the autonomic nervous system. Cardiac sympathetic activation decreases and parasympathetic increases HRV. LÄS MER