Sökning: "cardiac pacemaker"

Visar resultat 16 - 20 av 35 avhandlingar innehållade orden cardiac pacemaker.

  1. 16. 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. 17. Hemodynamic aspects of biventricular pacing in heart failure

    Författare :Marcus Ståhlberg; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Heart failure; biventricular pacing; hemodynamic monitoring; heart rate; cardiac output;

    Sammanfattning : Background and aims: Biventricular pacing or cardiac resynchronization therapy (CRT) is an established treatment option for selected heart failure (HF) patients. We aimed at evaluating acute and longer-term hemodynamic effects of different pacemaker programmings in CRT patients. LÄS MER

  4. 18. Continuous ambulatory hemodynamic monitoring with an implantable system : the feasibility of a new technique

    Författare :Åke Ohlsson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :heartfailure; hemodynamic monitoring; implantable; oxygen saturation; pressure; ambulatory; right ventricle; dPdt; long-term; sensor; cardiac output.;

    Sammanfattning : Patients with chronic heart failure constitute an increasingly large group. Despite recent therapeutic improvements, these patients have a poor prognosis. LÄS MER

  5. 19. Morbidity and mortality in patients with bundle branch block

    Författare :Fariborz Tabrizi; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :AV block; Bifascicular block; Congestive heart failure; Bundle branch block; Mortality; Myocardial infarction; Sudden cardiac death; Syncope.;

    Sammanfattning : Background: Syncope is a predictor of subsequent high-degree atrioventricular (AV) block in patients with bifascicular block (BFB) but the time relationship between syncope and development of AV block has not been well-studied. Patients with BFB have a significantly higher mortality rate compared with an age and sex matched population. LÄS MER

  7. 20. Cardio-pulmonary function in familial amyloidosis with polyneuropathy : a clinical study of cases from northern Sweden

    Författare :Bert-Ove Olofsson; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; amyloidosis; atrioventricular conduction; ECG; echocardiography; hemodynamics; pulmonary diffusing capacity;

    Sammanfattning : Familial amyloidosis with polyneuropathy (FAP) was first reported from Portugal in 1952, but since then this syndrome has been recognized in many countries including Sweden. In this investigation cardiac and pulmonary functions in the Swedish variety of FAP were studied. LÄS MER