Wide QRS Complex Tachycardia in a 68-Year-Old Man

Rabey, Ilan; Cohen, Daniel; Belhassen, Bernard

doi:10.1161/circulationaha.118.036319

Cited by 3 publications

(2 citation statements)

References 2 publications

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“… A 68-year-old man was admitted to the hospital because of syncope. 217 He had no cardiac history. On questioning, he reported that his only brother (age 85 years) was apparently healthy but was hospitalized in our department 7 years earlier with no further medical information.…”

Section: Outstanding Case Reportsmentioning

confidence: 99%

Contributions of Israel to the field of clinical cardiac electrophysiology and implantable devices

Belhassen

2024

Heart Rhythm O2

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Section: Outstanding Case Reportsmentioning

confidence: 99%

Contributions of Israel to the field of clinical cardiac electrophysiology and implantable devices

Belhassen

2024

Heart Rhythm O2

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“…The standard deferral between the atria and ventricles contraction of the heart is 0.12-0.20 s. This deferral is superbly coordinated to represent the physical path of the blood from the upper chamber to the ventricle. Intervals can be longer or shorter than this range show potential issues (Madhavapeddi, Verrier & Belardinelli, 2018;Rabey, Cohen & Belhassen, 2018;Sharma et al, 2019a). Figure 1 shows a visualization of the QRS complex.…”

Section: Introductionmentioning

confidence: 99%

From ECG signals to images: a transformation based approach for deep learning

Naz

Shah

Khan

et al. 2021

PeerJ Computer Science

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Provocative heart disease is related to ventricular arrhythmias (VA). Ventricular tachyarrhythmia is an irregular and fast heart rhythm that emerges from inappropriate electrical impulses in the ventricles of the heart. Different types of arrhythmias are associated with different patterns, which can be identified. An electrocardiogram (ECG) is the major analytical tool used to interpret and record ECG signals. ECG signals are nonlinear and difficult to interpret and analyze. We propose a new deep learning approach for the detection of VA. Initially, the ECG signals are transformed into images that have not been done before. Later, these images are normalized and utilized to train the AlexNet, VGG-16 and Inception-v3 deep learning models. Transfer learning is performed to train a model and extract the deep features from different output layers. After that, the features are fused by a concatenation approach, and the best features are selected using a heuristic entropy calculation approach. Finally, supervised learning classifiers are utilized for final feature classification. The results are evaluated on the MIT-BIH dataset and achieved an accuracy of 97.6% (using Cubic Support Vector Machine as a final stage classifier).

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A case report of arrhythmogenic ventricular cardiomyopathy presenting with sustained ventricular tachycardia arising from the right and the left ventricles before structural changes are documented

Belhassen

Shmilovich

Nof

et al. 2020

European Heart Journal - Case Reports

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Background Arrhythmogenic ventricular cardiomyopathy (AC) is a genetic progressive disease characterized by fibro-fatty replacement of either ventricles in isolation or in combination. Arrhythmogenic ventricular cardiomyopathy is frequently associated with ventricular tachycardia (VT) having a left bundle branch block (LBBB) morphology and much more rarely with VT having right bundle branch block (RBBB) morphology even when the left ventricle is involved. Cardiac magnetic resonance (CMR) imaging plays a key role in the diagnosis of AC. Sustained VT in AC may occur in the concealed stage of the disease before the manifestation of morphological abnormalities on echocardiogram; however, they almost always are accompanied by structural abnormalities of the ventricles on CMR. Case summary A 54-year-old man presented with sustained VT of LBBB configuration consistent with the diagnosis of AC but with no right ventricular (RV) anomalies at repeat CMR. Ten years later, he developed sustained VT with RBBB morphology and structural changes at CMR compatible with RV involvement in the setting of AC. Two years later, he suffered from recurrent identical sustained RBBB-VT with typical CMR signs of left ventricular involvement. Genetic analysis was negative for any known mutation. Discussion In the present report, we describe a patient with AC who first exhibited LBBB- and 10 years later RBBB-sustained VT. Contrasting with what is usually observed in patients with AC, documentations of the VT’s arising from either ventricle were found to precede the structural anomalies in the respective cardiac chambers. This case highlights that normal CMR does not exclude underlying AC contrary to the perceptions of many clinicians. In addition, it strongly encourages repeating CMR after 1–2 years when the diagnosis of AC is highly suspected.

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Wide QRS Complex Tachycardia in a 68-Year-Old Man

Cited by 3 publications

References 2 publications

Contributions of Israel to the field of clinical cardiac electrophysiology and implantable devices

Contributions of Israel to the field of clinical cardiac electrophysiology and implantable devices

From ECG signals to images: a transformation based approach for deep learning

A case report of arrhythmogenic ventricular cardiomyopathy presenting with sustained ventricular tachycardia arising from the right and the left ventricles before structural changes are documented

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