Pathological Electrocardiogram Analysis Based on Symbolic Relative Entropy

2013 ◽  
Vol 749 ◽  
pp. 270-272
Author(s):  
Jia Kai Qiu ◽  
Xiao Liang Huang ◽  
Su Yi Chang ◽  
Yun Xia Wang ◽  
Jun Wang
Keyword(s):  
Heart Failure ◽  
Atrial Fibrillation ◽  
Congestive Heart Failure ◽  
Clinical Diagnosis ◽  
Relative Entropy ◽  
Statistical Testing ◽  
Electrocardiogram Ecg

In this paper, symbolic relative entropy was used to analyze normal electrocardiogram (ECG), the ECG taken from patient with congestive heart failure (CHF) and Atrial fibrillation (AF). Statistical testing showed that the symbolic relative entropy of normal ECG was distinctly higher than that of CHF while the symbolic relative entropy of CHF was distinctly higher than that of AF. It discoved that symbolic relative entropy can be used to analyze the different pathological ECG which could be used to assisted clinical diagnosis.

Dilated cardiomyopathy in the Newfoundland: a study of 37 cases (1983-1994)

1996 ◽  
Vol 32 (6) ◽  
pp. 465-470 ◽  
Author(s):  
A Tidholm ◽  
L Jonsson
Keyword(s):  
Heart Failure ◽  
Atrial Fibrillation ◽  
Congestive Heart Failure ◽  
Dilated Cardiomyopathy ◽  
Clinical Diagnosis ◽  
Current Knowledge ◽  
Interstitial Fibrosis ◽  
Histopathological Changes ◽  
Homogeneous Population ◽  
Echocardiographic Findings

The case records of 37 Newfoundlands with congestive heart failure caused by dilated cardiomyopathy were reviewed in an attempt to compare current knowledge of dilated cardiomyopathy with findings in a large and homogeneous population. The clinical diagnosis was based on echocardiographic findings of reduced shortening fraction (FS) in the presence of clinical and radiographic signs or necropsy findings of left-sided or biventricular heart failure. Systolic murmurs were detected in only four cases. Atrial fibrillation was the most common arrhythmia. Histopathological changes consisted of attenuated wavy fibers and interstitial fibrosis. No significant sex predilection was observed.

scholarly journals Trends in mortality, co-morbidity and treatment after acute myocardial infarction in patients with rheumatoid arthritis 1998–2013

2020 ◽  
Vol 9 (8) ◽  
pp. 931-938 ◽  
Author(s):  
Mattias Skielta ◽  
Lars Söderström ◽  
Solbritt Rantapää-Dahlqvist ◽  
Solveig W Jonsson ◽  
Thomas Mooe
Keyword(s):  
Rheumatoid Arthritis ◽  
Myocardial Infarction ◽  
Heart Failure ◽  
Atrial Fibrillation ◽  
Acute Myocardial Infarction ◽  
Congestive Heart Failure ◽  
Cox Regression Analysis ◽  
Co Morbidity ◽  
One Year ◽  
Over Time

Aims: Rheumatoid arthritis may influence the outcome after an acute myocardial infarction. We aimed to compare trends in one-year mortality, co-morbidities and treatments after a first acute myocardial infarction in patients with rheumatoid arthritis versus non-rheumatoid arthritis patients during 1998–2013. Furthermore, we wanted to identify characteristics associated with mortality. Methods and results: Data for 245,377 patients with a first acute myocardial infarction were drawn from the Swedish Register of Information and Knowledge about Swedish Heart Intensive Care Admissions for 1998–2013. In total, 4268 patients were diagnosed with rheumatoid arthritis. Kaplan-Meier analysis was used to study mortality trends over time and multivariable Cox regression analysis was used to identify variables associated with mortality. The one-year mortality in rheumatoid arthritis patients was initially lower compared to non-rheumatoid arthritis patients (14.7% versus 19.7%) but thereafter increased above that in non-rheumatoid arthritis patients (17.1% versus 13.5%). In rheumatoid arthritis patients the mean age at admission and the prevalence of atrial fibrillation increased over time. Congestive heart failure decreased more in non-rheumatoid arthritis than in rheumatoid arthritis patients. Congestive heart failure, atrial fibrillation, kidney failure, rheumatoid arthritis, prior diabetes mellitus and hypertension were associated with significantly higher one-year mortality during the study period 1998–2013. Conclusions: The decrease in one-year mortality after acute myocardial infarction in non-rheumatoid arthritis patients was not applicable to rheumatoid arthritis patients. This could partly be explained by an increased age at acute myocardial infarction onset and unfavourable trends with increased atrial fibrillation and congestive heart failure in rheumatoid arthritis. Rheumatoid arthritis per se was associated with a significantly worse prognosis.

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