Sökning: "vectorcardiography"

Visar resultat 11 - 15 av 16 avhandlingar innehållade ordet vectorcardiography.

1. 11. Electrophysiological effects of contrast media. Dynamic vectorcardiographic monitoring of patients during coronary angiography

   Författare :Agneta Flinck; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Dynamic vectorcardiography; electrophysiology; contrast media; cardioangiography; adverse events;

   Sammanfattning : Objective: The aims of this work were to study, by means of dynamic vectorcardiography (VCG), the electrophysiological effects of contrast media (CM) injected into the coronary arteries and to evaluate which VCG variables are most suitable for comparing different CM. We also studied if CM-induced VCG changes differ from those seen after myocardial ischaemia. LÄS MER

3. 12. On Bundle Branch Block and Acute Myocardial Infarction

   Författare :Gunnar Thor Gunnarsson; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Acute myocardial infarction; left bundle branch block; right bundle branch block; diagnosis; prognosis; continuous vectorcardiography;

   Sammanfattning : Studies from the pre-thrombolytic era showed that patients with bundle branch block suffering acute myocardial infarction had worse prognosis compared to patients without bundle branch block. It seems that this difference still exists in the thrombolytic era, at least for short-term mortality. LÄS MER

4. 13. Applications of Vectorcardiography for Diagnosis and Risk Stratification in Subpopulations at Risk for Life-Threatening Arrhythmias

   Författare :Daniel Cortez; Kardiologi; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Vectorcardiography; atrial depolarization; ventricular depolarization repolarization;

   Sammanfattning : Introduction: Vectorcardiography, or 3-dimensional electrocardiography is a tool which can be used to identify subtle changes in the electrical forces of the heart, and which can be applied to atrial depolarization, ventricular depolarization and ventricular repolarization for prognostic and diagostic purposes. Methods: Kor’s regression-related and quasi orthogonal methods was used to derive vectorcardiographic parameters from the 12-lead electrocardiogram and applied to a cohort of cryptogenic stroke patients to assess atrial fibrillation, hypertrophic cardiomyopathy patients to assess for ventricular arrhythmias, applied with right-precordial directed quasi orthogonal method to arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVC/D) patients for diagnosis, and applied to ventricular repolarization only to patients with genotype-positive/phenotype-negative Long QT2 syndrome (KNCH2 mutation) to assess for cardiac events. LÄS MER

5. 14. Cardiovascular assessment in middle-aged male long distance runners

   Författare :Philip Aagaard; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :early repolarisation;

   Sammanfattning : Endurance events such as long distance running races are increasing in popularity and convey multiple health benefits. However, such exercise forms also represent a major challenge to human cardiovascular physiology and are associated with a momentarily increased risk for adverse cardiac events. LÄS MER

7. 15. T-vector and T-loop morphology analysis of ventricular repolarization in ischemic heart disease

   Författare :Aigars Rubulis; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : Background: Sudden cardiac death (SCD) is responsible for about half of all cardiovascular deaths in the western world. Heterogeneous ventricular repolarization (VR) is a common denominator in the genesis of malignant ventricular arrhythmias responsible for SCD and the presence of coronary artery disease (CAD) is an aggravating factor. LÄS MER