Results 1 to 10 of about 1,320,837 (260)

Sex and Race Differences in QRS Duration. [PDF]

Europace, 2016
The study investigated healthy subjects to study sex and race differences in QRS durations and the dependency of QRS durations on heart rates and other physiologic correlates.QRS duration and its heart rate dependency were evaluated in 420 615 electrocardiograms obtained in 523 healthy subjects including 111 females of African origin, 130 Caucasian ...
Katerina Hnátková, Marek Malik, Georg Schmidt   +2 more
exaly   +4 more sources

Assessment of QRS duration and presence of fragmented QRS in patients with celiac disease. [PDF]

Int J Med Sci
Background: Celiac Disease (CD) is characterized by small intestine involvement. However, cardiac manifestations may also be seen in the clinical course. The significance of the QRS prolongation and the presence of QRS fragmentation (fQRS) has been previously studied in many chronic inflammatory disorders as an independent predictor of cardiac ...
Güven İE, Candemir M.
europepmc   +4 more sources

Evaluation of QRS duration and presence of fragmented QRS in patients with inflammatory bowel disease. [PDF]

Int J Med Sci
Background: Inflammatory Bowel Disease (IBD) is mostly characterized by gastrointestinal tract involvement, however can also be accompanied with cardiac manifestations. QRS prolongation and the presence of QRS fragmentation (fQRS) have been previously evaluated in many chronic inflammatory diseases, as an independent predictor of cardiac events.
Güven İE, Candemir M, Kayacetin E.
europepmc   +4 more sources

Postoperative changes in QRS duration and long-term mortality after septal myectomy [PDF]

JTCVS Open
Objectives: To evaluate whether change in QRS duration (ΔQRS), defined as postoperative QRS duration minus preoperative QRS duration, after septal myectomy for obstructive hypertrophic cardiomyopathy (oHCM) has prognostic significance for all-cause ...
Takahiro Kitsuka, MD, PhD, Nathan Peffley, MD, Patrick M. Wieruszewski, PharmD, MS, Richard C. Daly, MD, Hartzell V. Schaff, MD   +4 more
doaj   +2 more sources

Electrocardiographic QRS duration is influenced by body mass index and sex [PDF]

International Journal of Cardiology: Heart & Vasculature, 2021
Background: Electrocardiogram (ECG) measured QRS duration has been shown to influence cardiovascular outcomes. However, there is paucity of data on whether ECG QRS duration is influenced by obesity and sex in large populations.
Anupam C.A. Rao, Austin C.C. Ng, Raymond W. Sy, Karin K.M. Chia, Peter S. Hansen, Joseph Chiha, Jens Kilian, Logan B. Kanagaratnam   +7 more
doaj   +2 more sources

Shorter perioperative QRS duration and a leftward frontal-plane QRS axis are associated with anastomotic leakage after esophagectomy: a hypothesis-generating study [PDF]

Frontiers in Medicine
BackgroundAnastomotic leakage (AL) after esophagectomy is a serious complication for which early physiological signals remain limited. We conducted a hypothesis-generating analysis of whether routinely reported electrocardiographic QRS measurements were ...
Mengke Ma, Youjia Zhu, Handan Lin, Weizhuo Liu, Wendi Fei, Haotian Jiang, Bin He   +6 more
doaj   +2 more sources

Heritability and causality of QRS duration and chronic heart failure risk [PDF]

ESC Heart Failure
Aims Observational studies report conflicting results on the relationship between QRS duration and chronic heart failure (CHF), presenting challenges in establishing a causal link.
Zequn Zheng, Xinhan Li, Yongfei Song
doaj   +2 more sources

Incremental changes in QRS duration as predictor for cardiovascular disease: a 21-year follow-up of a randomly selected general population [PDF]

Scientific Reports, 2021
The QRS complex has been shown to be a prognostic marker in coronary artery disease. However, the changes in QRS duration over time, and its predictive value for cardiovascular disease in the general population is poorly studied.
Xiaojing Chen, Per-Olof Hansson, Erik Thunström, Zacharias Mandalenakis, Kenneth Caidahl, Michael Fu   +5 more
doaj   +2 more sources

GWAS of QRS duration identifies new loci specific to Hispanic/Latino populations. [PDF]

PLoS ONE, 2019
BackgroundThe electrocardiographically quantified QRS duration measures ventricular depolarization and conduction. QRS prolongation has been associated with poor heart failure prognosis and cardiovascular mortality, including sudden death. While previous
Brenton R Swenson, Tin Louie, Henry J Lin, Raúl Méndez-Giráldez, Jennifer E Below, Cathy C Laurie, Kathleen F Kerr, Heather Highland, Timothy A Thornton, Kelli K Ryckman, Charles Kooperberg, Elsayed Z Soliman, Amanda A Seyerle, Xiuqing Guo, Kent D Taylor, Jie Yao, Susan R Heckbert, Dawood Darbar, Lauren E Petty, Barbara McKnight, Susan Cheng, Natalie A Bello, Eric A Whitsel, Craig L Hanis, Mike A Nalls, Daniel S Evans, Jerome I Rotter, Tamar Sofer, Christy L Avery, Nona Sotoodehnia   +29 more
doaj   +2 more sources

The change of QRS duration after pulmonary valve replacement in patients with repaired tetralogy of Fallot and pulmonary regurgitation [PDF]

Korean Journal of Pediatrics, 2018
Purpose This study aimed to analyze changes in QRS duration and cardiothoracic ratio (CTR) following pulmonary valve replacement (PVR) in patients with tetralogy of Fallot (TOF).
Yuni Yun, Yeo Hyang Kim, Jung Eun Kwon
doaj   +1 more source