Life‐threatening ventricular arrhythmia as first presentation of Tuberculosis—Early diagnosis and successful treatment: A case series

Abstract

Background: Tuberculosis of the myocardium is an extremely rare entity with few published case reports. Diagnosis is often delayed, and outcomes are unfavorable: particularly when cardiac involvement has been the presenting entity.Methods: Four patients, aged 24-51 years, presented with life-threatening ventricular arrhythmia (VA). None had a previous history of tuberculosis or any structural heart disease. Electrocardiogram during sinus rhythm and Echocardiography did not show any gross abnormality. All patients underwent contrast-enhanced computer tomography of thorax and cardiac magnetic resonance imaging. Attempts to obtain tissue (cardiac or associated mediastinal lymph nodes) were associated with increased risk to the patients thus indirect evidence of Mantoux skin test and interferon gamma release assay results were used to aid diagnosis.

Online Automatic Diagnosis System of Cardiac Arrhythmias Based on MIT-BIH ECG Database

“…The literature uses a five-level discrete wavelet transform to decompose the signal into six subband signals with different frequency distributions. Three RR interval correlation features were added to construct a feature vector of 30 features, and finally [ 10 ] the features were fed into a feedforward backpropagation neural network to achieve the classification of seven signals. Transformation extracted wavelet coefficients of ECG signals as the first features and optimized the wavelet extracted features using a combination of principal component analysis and independent component analysis and then fused intervals as the final features.…”