Sökning: "ambulatory ECG"

Visar resultat 1 - 5 av 14 avhandlingar innehållade orden ambulatory ECG.

  1. 1. Quality Control in ECG-based Atrial Fibrillation Screening

    Författare :Hesam Halvaei; Avdelningen för Biomedicinsk teknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ECG; Signal Quality; Atrial fibrillation screening;

    Sammanfattning : This thesis comprises an introductory chapter and four papers related to quality control in ECG-based atrial fibrillation (AF) screening. Atrial fibrillation is a cardiac arrhythmia characterized by an irregular rhythm and constitutes a major risk factor for stroke. LÄS MER

  3. 2. Novel Approaches to ECG-Based Modeling and Characterization of Atrial Fibrillation

    Författare :Frida Sandberg; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HMM; ECG; Biomedical Signal Processing; Time-Frequency Analysis; Atrial Fibrillation; Sample Entropy; AV modeling;

    Sammanfattning : This thesis deals with signal processing algorithms for analysis of the electrocardiogram (ECG) during atrial fibrillation (AF). Such analysis can be used for diagnosing patients, and for monitoring and predicting their response to various treatment. LÄS MER

  4. 3. Prognostic implications of exercise induced and ambulatory ischemia in patients with stable angina pectoris

    Författare :Lennart Forslund; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :angina pectoris; exercise testing; ambulatory ECG; signs of ischemia; heart rate variability; catecholamines; metoprolol; verapamil; prognosis;

    Sammanfattning : Results from exercise testing and ambulatory ECG registration were studied in 809 patients with stable angina pectoris; special attention was paid to signs of ischemia during both tests. Autonomic nervous system activity was investigated by measurements of heart rate variability (HRV) and catecholamines in plasma and urine. LÄS MER

  5. 4. Blood pressure, blood pressure variability and myocardial ischemia : studies in patients with peripheral arterial disease and matched control subjects

    Författare :Per Svensson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Peripheral vascular diseases; hypertension drug therapy; ambulatory blood pressure monitoring; coronary artery disease; ambulatory electrocardiography; SPECT; NT-proBNP;

    Sammanfattning : Background: Patients presenting with peripheral arterial disease (PAD) often have concomitant coronary artery disease (CAD), which is frequently asymptomatic. Ambulatory blood pressure (ABP) monitoring improves risk stratification in hypertensive patients beyond that offered by office BP(OBP) measurements. 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