Read by QxMD icon Read

QRS Fragment

Muhammet Dural, Lütfiye Demir, Erdi Babayiğit, Bermet Junushova, Kadir Uğur Mert, Taner Ulus, Yüksel Çavuşoğlu, Bülent Yıldız, Murat Dinçer, Bülent Görenek
No abstract text is available yet for this article.
February 12, 2019: Journal of Electrocardiology
Ragab A Mahfouz, Mohammad Gouda, Mohamed S Ghareb, Islam Galal
OBJECTIVE: We aimed to investigate the relation between the presence of fragmented QRS (FQRS) and exercise intolerance as assessed by 6 minute walking test (6MWT) and its association with coronary flow reserve (CFR). METHODS: One hundred and twenty patients with hypertension (age: 47.3 + 6.9) who were never treated and without left ventricular hypertrophy underwent 6MWT. Echocardiographic examination was obtained for all patients. CFR was calculated as the hyperemic to baseline mean velocity ratio (hyperemia was induced by intravenous adenosine 0...
January 22, 2019: Blood Pressure
U Celikyurt, B Açar, I Karauzum, K Karauzum, D Ural, A A Agir, A Vural
OBJECTIVE: Cardiac resynchronization therapy (CRT) is an effective option in the treatment of patients with heart failure and wide QRS. Presence of fragmented QRS (f-QRS) on 12-lead electrocardiogram (ECG) has been shown to be associated with non-response to CRT. The aim of this study was to evaluate whether onset of fragmentation (Q-f interval) is important for CRT response. METHODS: This is a single-center retrospective analysis of prospectively collected data of 38 non-ischemic dilated cardiomyopathy patients (18 men, mean age 63±12 years) with f-QRS on 12-lead ECG who underwent CRT...
January 18, 2019: Revista Clínica Española
Lütfü Bekar, Macit Kalçık, Muzaffer Katar, Mucahit Yetim, Oğuzhan Çelik, Tolga Doğan, Yusuf Karavelioğlu, Zehra Gölbaşı
OBJECTIVE: Fragmented QRS (fQRS) detected on a 12-lead electrocardiogram (ECG) has been demonstrated to be a marker of myocardial fibrosis. Intercellular adhesion molecule-1 (ICAM-1) is a protein which plays an important role in fibro-inflammatory processes. In this study, we aimed to investigate the relationship between ICAM-1 levels and the presence of fQRS in hypertensive patients. METHODS: Ninety consecutive patients who were diagnosed with hypertension were included in the study...
January 16, 2019: Acta Cardiologica
Tomomi Nagayama, Satoshi Nagase, Tsukasa Kamakura, Mitsuru Wada, Kohei Ishibashi, Yuko Y Inoue, Koji Miyamoto, Takashi Noda, Takeshi Aiba, Hiroshi Takaki, Masaru Sugimachi, Wataru Shimizu, Teruo Noguchi, Satoshi Yasuda, Shiro Kamakura, Kengo Kusano
BACKGROUND: Spontaneous type 1 electrocardiogram (ECG) in the right precordial lead is a dominant predictor of ventricular fibrillation (VF) in Brugada syndrome (BrS). In some BrS patients with VF, however, spontaneous type 1 ECG is undetectable, even in repeated ECG and immediately after VF. This study investigated differences between BrS patients with spontaneous or drug-induced type 1 ECG. Methods and Results: We evaluated 15 BrS patients with drug-induced (D-BrS) and 29 with spontaneous type 1 ECG (SP-BrS)...
January 12, 2019: Circulation Journal: Official Journal of the Japanese Circulation Society
Lütfü Bekar, Macit Kalçık, Oğuzhan Çelik, Çağlar Alp, Mucahit Yetim, Tolga Doğan, İsmail Ekinözü, Osman Karaarslan, Volkan Çamkıran, Yusuf Karavelioğlu, Zehra Gölbaşı
BACKGROUND: Epicardial adipose tissue (EAT) is a cardiometabolic risk factor, and its possible relationship with hypertension has been reported previously. Fragmented QRS (fQRS) detected on electrocardiography (ECG) has been demonstrated to be a marker of myocardial fibrosis. In this study, we aimed to investigate the relationship between the thickness of EAT, and presence of fQRS in hypertensive patients. METHODS: Consecutive patients who were diagnosed with hypertension were included in the study...
January 4, 2019: Journal of Clinical Ultrasound: JCU
Aneesh C Ratheendran, Muthiah Subramanian, Devi K Bhanu, Mukund A Prabhu, Rajesh Kannan, K U Natarajan, S Saritha Sekhar, Rajesh Thachathodiyil, M S Harikrishnan, Praveen G Pai
BACKGROUND: Fragmented QRS (fQRS) and Q waves are ECG findings in patients with myocardial scar. fQRS is more sensitive than pathological Q waves in detecting myocardial fibrosis in patients with coronary artery disease (CAD). Cardiac magnetic resonance (CMR) imaging is used for the diagnosis and for quantifying scar tissue in patients with HCM. Our aim was to correlate ECG parameters like fQRS and Q waves with the presence of late gadolinium enhancement (LGE) assessed by contrast CMR imaging to elucidate ECG markers which might predict scar tissue in HCM...
January 3, 2019: Acta Cardiologica
Hyun Jun Cho, Jae Yong Yoon, Namkyun Kim, Se Yong Jang, Myung Hwan Bae, Jang Hoon Lee, Dong Heon Yang, Hun Sik Park, Yongkeun Cho, Shung Chull Chae
BACKGROUND: A fragmented QRS complex (fQRS) is caused by conduction abnormalities of the ventricle secondary to myocardial ischemia and/or scar in patients with myocardial infarction. However, the implications of the fQRS in the development of coronary artery disease with myocardial ischemia in those without a scar remain unknown. METHODS: We studied electrocardiograms (ECGs) obtained from 150 patients (60.5±8.5 years, 102 men) with myocardial ischemia, which was confirmed by performing both, a nuclear exercise stress test and coronary angiography...
December 31, 2018: Clinical Cardiology
Sepideh Hekmat, Leili Pourafkari, Mojan Ahmadi, Mohammad Reza Chavoshi, Bijan Zamani, Nader D Nader
BACKGROUND: Fragmented QRS (FQRS) on surface electrocardiogram (ECG) is associated with the presence of myocardial scar tissue and may have prognostic value after certain ischemic events. We aimed to examine the anatomical correlation of FQRS with the presence of perfusion abnormalities in patients with suspected coronary artery disease (CAD). METHODS: Patients without a known history of CAD, who were referred for myocardial perfusion imaging (MPI) between January 2016 and May 2016, were enrolled...
December 2018: Indian Heart Journal
Sridharan Umapathy, Rakesh Yadav, Kewal C Goswami, Ganesan Karthikeyan, Neeraj Parakh, Vinay K Bahl
BACKGROUND & OBJECTIVES: This longitudinal study was carried out to evaluate the prognostic significance of fragmented QRS (fQRS) in patients with acute ST elevation myocardial infarction (STEMI) undergoing revascularization. METHODS: This study included 103 STEMI patients belonging to Killip class I and II who underwent primary revascularization. All patients underwent twelve lead ECG at admission before PCI. Serial ECG were done after PCI at 3 hours, 6 hours, 24 hours, 48 hours and at discharge for detection of fQRS and echocardiography on day 3 post revascularization...
December 2018: Indian Heart Journal
Frank Weidemann, Meinrad Beer, Martina Kralewski, Justyna Siwy, Christoph Kampmann
BACKGROUND: Initiation of enzyme replacement therapy (ERT) early in the Fabry disease course may facilitate better outcomes than in patients with advanced disease. Early diagnosis is often hindered by the heterogeneous nature of signs and symptoms, and by the presentation of atypical phenotypes. METHODS: The Sophisticated Assessment of Disease Burden in Patients with Fabry Disease study (SOPHIA;, NCT01210196) evaluated clinical and diagnostic assessments for early detection of Fabry-related organ pathology in ERT-naïve patients with mild FD symptoms...
November 12, 2018: Molecular Genetics and Metabolism
Mehmet Eyuboglu, Bahri Akdeniz
BACKGROUND: Fragmented QRS (fQRS) is a sign of adverse cardiovascular events in various cardiovascular diseases. It is also associated with increased blood pressure and non-dipping in hypertensive patients. However, no study has investigated the importance of fQRS in prehypertensive patients. OBJECTIVES: The aim of our study is to investigate the relationship between fQRS and non-dipper status in prehypertensive patients. METHODS: Two hundred and sixteen eligible, newly diagnosed prehypertensive patients who underwent 24-hour ambulatory blood pressure monitoring (ABPM) for further evaluation of blood pressure between June 2015 and July 2016 were included into the study...
December 17, 2018: Arquivos Brasileiros de Cardiologia
Alexander C Egbe, William R Miranda, Nandini Mehra, Naser M Ammash, Venkata R Missula, Malini Madhavan, Abhishek J Deshmukh, Mohamed Farouk Abdelsamid, Srikanth Kothapalli, Heidi M Connolly
Background Patients with tetralogy of Fallot ( TOF ) remain at risk for cardiovascular events despite successful repair. Some of the current risk stratification tools require advanced imaging and invasive studies, and hence are difficult to apply to routine patient care. A recent study showed that QRS fragmentation ( QRS -f) is predictive of mortality in patients with TOF. The current study aims to validate this result by assessing whether severity of QRS -f could predict all-cause mortality in a different TOF population...
December 18, 2018: Journal of the American Heart Association
Adil Bayramoğlu, Hakan Taşolar, Osman Bektaş, Ahmet Kaya, Zeki Yüksel Günaydın
OBJECTIVE: Smoking is a known risk factor for cardiovascular diseases and may cause myocardial damage independently of coronary artery disease. Fragmented QRS (fQRS) is an important marker of myocardial fibrosis, while speckle-tracking echocardiography is a method used to show subclinical left ventricle dysfunction. METHODS: Our study included 230 healthy individuals aged 18-40 years. The patients included were separated into two groups: those smokers (n = 130) and non-smokers (n = 100)...
December 18, 2018: Echocardiography
Nuray Kahraman Ay, Asim Enhos, Yasin Ay, Nijad Bakhshaliyev, Aydin Nadir, Erdem Karacop, Ilke Celikkale, Mahmut Uluganyan, Razaman Ozdemir, Omer Goktekin
BACKGROUND: Although transcatheter aortic valve implantation (TAVI) can successfully correct aortic narrowing, pre-existing pathophysiological alterations in the left ventricle are still a concern in terms of long-term mortality. This study aimed to examine the predictive role of fQRS morphology on long-term prognosis in patients undergoing TAVI due to severe aortic stenosis. METHODS: A total of 117 patients undergoing TAVI due to severe aortic stenosis were included in this retrospective cohort study...
November 2018: Journal of Electrocardiology
Yasuhiro Yokoyama, Hitoshi Hachiya, Tomonori Watanabe, Ayako Yokota, Takahiro Komori, Tomoyuki Kabutoya, Yasushi Imai, Kazuomi Kario
Idiopathic ventricular tachycardias (VTs) originating from the non-coronary cusp (NCC) are very rare. The previous reports suggested NCC-VTs were characterized by a narrower QRS duration and smaller III/II ratio than VTs originating from other coronary-cusps. We present a rare case of an NCC-VT with a local fragmented potential recorded at the NCC inconsistent with the known ECG characteristics of NCC-VTs.
November 9, 2018: Journal of Electrocardiology
Osman Bektaş, Ahmet Karagöz, Adil Bayramoğlu, Erdal Benli, Zeki Yüksel Günaydın, Mehmet Yaman, Ahmet Kaya
Purpose: The aim of this study was to investigate the association between fragmented QRS and left ventricular (LV) systolic function in patients with erectile dysfunction (ED). Methods: A total of 106 patients with ED and without a history of coronary artery disease (CAD) were compared with 54 age- and gender-matched healthy controls. LV systolic function was evaluated using speckle tracking echocardiography via global longitudinal strain (GLS) and global circumferential strain (GCS)...
November 2018: Acta Cardiologica Sinica
János Tomcsányi
An Asian patient was admitted with palpitation. The ECG showed coved-shaped type Brugada pattern with QRS-fragmentations. Early recognition and risk stratification are the most important issues in Brugada syndrome. Orv Hetil. 2018; 159(45): 1848-1850.
November 2018: Orvosi Hetilap
Chayapat Tangwiwat, Yodying Kaolawanich, Rungroj Krittayaphong
BACKGROUND: Electrocardiography (ECG) may be an efficacious diagnostic and prognostic tool in hypertrophic cardiomyopathy (HCM). This study aimed to investigate association between deep T-wave inversion (TWI) and apical HCM, and between fragmented QRS (fQRS) complex and myocardial fibrosis in patients with HCM. METHODS: Patients with documented HCM by cardiac magnetic resonance imaging (CMR) during 2005-2015 were studied. The 12-lead ECG and CMR were performed on the same day...
November 7, 2018: Annals of Noninvasive Electrocardiology
Kamil Gulsen, Orhan Ince, Gokmen Kum, Flora Ozkalayci, Irfan Sahin, Ertugrul Okuyan
BACKGROUND: Fragmented QRS evaluated in 12-derivation electrocardiography has widely been accepted as a sign of myocardial fibrosis. The prognostic value of that marker has been demonstrated, particularly, in cardiac diseases that accompany myocardial scar and fibrosis. Myocardial fibrosis is also an issue in patients with aortic stenosis. In this study, we wanted to determine whether fragmented QRS could predict all-cause mortality in aortic stenosis patients after transcatheter aortic valve replacement (TAVR)...
November 7, 2018: Annals of Noninvasive Electrocardiology
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"