Sökning: "Refractoriness"

Visar resultat 6 - 10 av 20 avhandlingar innehållade ordet Refractoriness.

  1. 6. Atrial Fibrillation. Modulation of the atrial fibrillatory frequency. A non-invasive approach

    Författare :Carl Meurling; Kardiologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; elektrofysiologi; Förmaksflimmer; arytmi; Cardiovascular system; Kardiovaskulära systemet; non-invasiv;

    Sammanfattning : Aim: To non-invasively detect and explore the changes in atrial fibrillatory cycle length (i.e. changes in the atrial refractory period) in humans with chronic atrial fibrillation (CAF) following autonomic modulation and pharmacological intervention. LÄS MER

  3. 7. Cardiac electrophysiologic effects of mental stress

    Författare :Per Insulander; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Background: Mental stress may trigger serious arrhythmias. Mental stress tests cause significant increases in heart rate, blood pressure and cardiac output. When beta-adrenergic inhibition is considered for secondary antiarrhythmic prophylaxis beta1 selective agents are often preferred because of less adverse reactions. LÄS MER

  4. 8. Platelet transfusions in hematological disorders

    Författare :Cecilia Karlström; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Platelets are important for clot formation and vascular integrity. Thrombocytopenic patients with hematological disorders are at risk of bleeding and platelet transfusions are important in supportive care and treatment of lite-threatening bleedings. LÄS MER

  5. 9. Mycobacterial infection: Immune evasion, host susceptibility and immunological markers of diagnostic importance

    Författare :John Arko-Mensah; Carmen Fernandez; Francesco Dieli; Stockholms universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Mycobacteria; Mice; Toll-like receptors; interferon gamma; immunological markers; lung; respiratory tract; susceptibility; Immunology; Immunologi; immunologi; Immunology;

    Sammanfattning : IIn the first study, we investigated the functional implications of prolonged TLR signalling on IFN-γ mediated killing of mycobacteria by murine macrophages in vitro. TLR2, but not TLR4 ligation interfered with IFN-γ mediated killing of mycobacteria in macrophages. LÄS MER

  7. 10. The oesophageal route in clinical electrocardiology

    Författare :Steen Pehrson; Kardiologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Cardiovascular system; oesophageal electrocardiogram; cardiac pacing; Transoesophageal stimulation; arrhythmias; non-invasive electrophysiology; atrial fibrillation; supraventricular tachycardia; Kardiovaskulära systemet;

    Sammanfattning : The subject of this thesis is the clinical use of the oesophageal electrode in electrocardiology. The three areas covered are oesophageal electro- cardiography, the biophysics of transoesophageal atrial stimulation (TAS) and the clinical utility of TAS. The literature is reviewed with respect to these areas. LÄS MER