Results 31 to 40 of about 2,315 (139)

QRS fragmentation: Diagnostic and prognostic significance

Cardiology Journal, 2012
Fragmentation of QRS (fQRS) complex is an easily evaluated non-invasive electrocardiographic parameter. Fragmentation of narrow QRS is defined as presence of an additional R wave (R') or notching in the nadir of the S wave, or the presence of > 1 R' in 2 contiguous leads, corresponding to a major coronary artery territory on the resting 12-lead ECG ...
Grzegorz, Pietrasik, Wojciech, Zaręba
openaire   +2 more sources

Features of 12-lead electrocardiography in patients with critical aortic stenosis

Российский кардиологический журнал, 2023
Aim. To study the features of 12-lead electrocardiography (ECG) in patients with critical aortic stenosis referred for transcatheter aortic valve implantation.Material and methods. The study included 50 patients aged 76,6±6,5 years.
A. E. Komlev, E. V. Blinova, T. A. Sakhnova, M. A. Saidova, T. E. Imaev   +4 more
doaj   +1 more source

Presence of Fragmented QRS Complexes in Patients with Obstructive Sleep Apnea Syndrome

Chinese Medical Journal, 2015
Background: Obstructive sleep apnea syndrome (OSAS) is a disease with increasing prevalence, which is mainly characterized by increased cardiopulmonary mortality and morbidity.
Muhammet Rasit Sayin, Murat Altuntas, Ziyaeddin Aktop, Ibrahim I Oz, Nesimi Yavuz, Ibrahim Akpinar, Erol Sagatli, Turgut Karabag, Mustafa Aydin   +8 more
doaj   +1 more source

Fragmented Left Sided QRS in Absence of Bundle Branch Block: Sign of Left Ventricular Aneurysm

Annals of Noninvasive Electrocardiology, 2006
Background: A left ventricular aneurysm (LVA) occurs between 3.5% and 9.4% of all cases of acute myocardial infarction. A fragmented left sided QRS (RSR` pattern or its variant RSr`, rSR`, or rSr`) without evidence of bundle branch block (QRS duration ...
Chatla V. R. Reddy, Kuruvilla Cheriparambill, Barry Saul, Majesh Makan, John Kassotis, Awaneesh Kumar, Mithilesh Kumar Das   +6 more
doaj   +1 more source

Fragmented QRS complex frequency and location as predictor of cardiogenic shock and mortality following acute coronary syndrome

The Egyptian Heart Journal, 2020
Background Worldwide, coronary heart disease (CHD) is topping the foremost important chief causes of mortality. Fragmented QRS (f-QRS) is a pattern of QRS complex in 12 leads surface ECG which showed a promising value in predicting the outcome in cardiac
Ahmad Salah Younis, Moataz Ibrahim El-Halag, Mahmoud Ali ElBadry, Nora Ismail Mohamed Abbas   +3 more
doaj   +1 more source

QRS-fragmentation: Case report and review of the literature

Archivos de Cardiología de México, 2018
Fragmentation of QRS complex (QRSf) is an easily evaluable, non-invasive electrocardiographic parameter that represents depolarisation anomalies and has been associated with several adverse outcomes, such as sudden death, fibrosis, arrhythmic burden, and a worse prognosis in different conditions, including coronary artery disease (CAD).
Edgar Illescas-González, Diego Araiza-Garaygordobil, Jorge Daniel Sierra Lara, Aristoteles Ramirez-Salazar, Carlos Sierra-Fernández, Erick Alexanderson-Rosas   +5 more
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Left bundle branch block in coronary artery disease: toward novel electrocardiographic markers

КардиоСоматика
BACKGROUND: Complete left bundle branch block is a classic example of an electrocardiogram that is non-informative when assessed using conventional criteria for myocardial ischemia.
Yuri N. Fedulaev, Irina V. Makarova, Alisa V. Grigorieva, Dzhamilya R. Kapitonova, Gulfiya A. Khairetdinova   +4 more
doaj   +1 more source

Fragmented narrow QRS complex: Predictor of left ventricular dyssynchrony in non-ischemic dilated cardiomyopathy

Indian Heart Journal, 2013
Background: Cardiac resynchronization therapy is an important therapeutic modality in drug refractory symptomatic patients of heart failure with wide QRS (≥120 ms) on electrocardiogram. However, wide QRS (considered as a marker of electrical dyssynchrony)
Jamal Yusuf, Devendra Kumar Agrawal, Saibal Mukhopadhyay, Vimal Mehta, Vijay Trehan, Sanjay Tyagi   +5 more
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Variations of QRS Morphology in Patients with Dilated Cardiomyopathy; Clinical and Prognostic Implications [PDF]

Journal of Cardiovascular and Thoracic Research, 2014
The QRS represents the simultaneous activation of the right and left ventricles, although mostof the QRS waveform is derived from the larger left ventricular musculature. Although normalQRS duration is
Taylan Akgun, Sedat Kalkan, Mustafa Kursat Tigen   +2 more
doaj   +1 more source

QRS Fragmentation in Preserved Ejection Fraction Heart Failure: Functional Insights, Pathological Correlates, and Prognosis

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2023
Background Fragmented QRS (fQRS) morphology as a surrogate marker of the possible presence of myocardial scarring has been shown to confer a higher risk in patients with reduced ejection fraction heart failure.
Kuo‐Tzu Sung, Sheng‐Hsiung Chang, Po‐Ching Chi, Shih‐Chieh Chien, Chi‐In Lo, Chao‐Feng Lin, Wen‐Hung Huang, Chun‐Ho Yun, Cheng‐Ting Tsai, Cheng‐Huang Su, Charles Jia‐Yin Hou, Hung‐I Yeh, Chin‐Ho Tsao, Jen‐Yuan Kuo, Chung‐Lieh Hung   +14 more
doaj   +1 more source