Results 31 to 40 of about 1,320,837 (260)

Assessment of Left Ventricular Dyssynchrony in Heart Failure Patients Regarding Underlying Etiology and QRS Duration [PDF]

Journal of Tehran University Heart Center, 2011
Background: Left ventricular (LV) dyssynchrony is a prevalent feature in heart failure (HF) patients. The current study aimed to evaluate the prevalence of inter and intraventricular dyssynchrony in HF patients with regard to the QRS duration and ...
Mahdi Montazeri, Mehrnaz Rezvanfard, Ali Kazemisaeid, Masoumeh Lotfi Tokaldany, Azam Safir Mardanloo, Farzad Darabi, Mahmood Sheikh Fathollahi, Hakimeh Sadeghian   +7 more
doaj   +1 more source

Different Methods to Measure QRS Duration in CRT Patients: Impact on the Predictive Value of QRS Duration Parameters [PDF]

Annals of Noninvasive Electrocardiology, 2015
BackgroundMeasurements of QRS duration (QRSD) in patients undergoing cardiac resynchronization therapy (CRT) are not standardized. We hypothesized that both the measurement of QRSD and its predictive value on CRT response are sensitive to the method by which QRSD is measured.MethodsElectrocardiograms (ECGs) pre‐ and post‐CRT from 52 CRT patients (66 ...
Jan, De Pooter, Milad, El Haddad, Liesbeth, Timmers, Frédéric, Van Heuverswyn, Luc, Jordaens, Mattias, Duytschaever, Roland, Stroobandt   +6 more
openaire   +2 more sources

Prevalence and prognostic value of ventricular conduction delay in heart failure with preserved ejection fraction

International Journal of Cardiology: Heart & Vasculature
Background: The pathophysiology of heart failure (HF) with preserved ejection fraction (HFpEF) is heterogeneous and incompletely understood. This study evaluated the presence of a ventricular conduction delay (VCD) phenotype in HFpEF through QRS duration
Anouk Achten, Jerremy Weerts, Johan van Koll, Mohammed Ghossein, Sanne G.J. Mourmans, Arantxa Barandiarán Aizpurua, Antonius M.W. van Stipdonk, Kevin Vernooy, Frits W. Prinzen, Hans-Peter Brunner-La Rocca, Christian Knackstedt, Vanessa P.M. van Empel   +11 more
doaj   +1 more source

Marked prolongation of QRS duration after initiation of dronedarone therapy

, 2014
Dronedarone is a relatively new antiarrhythmic drug and is held to be less proarrhythmic than comparable compounds, although its proarrhythmia potential in humans has not been sufficiently evaluated.
Hans D. Esperer, Conrad Genz, Samir M. Said, Alexander Schmeisser, Ruediger C. Braun-Dullaeus   +4 more
core   +1 more source

Systolic blood pressure but not electrocardiogram QRS duration is associated with heart rate variability (HRV): a cross-sectional study in rural Australian non-diabetics

Clinical Hypertension, 2017
Background A positive correlation between ECG derived QRS duration and heart rate variability (HRV) parameters had previously been reported in young healthy adults.
Yvonne Yin Leng Lee, Herbert F. Jelinek, Craig S. McLachlan   +2 more
doaj   +1 more source

Measurement of QRS Duration for Biventricular Pacing Optimization [PDF]

ASAIO Journal, 2008
Optimization of left ventricular pacing site or interventricular pacing delay improves the efficacy of biventricular pacing (BiVP). Cardiac output (CO) based optimization, however, is invasive and slow. QRS duration (QRSd) is noninvasive and responds rapidly.
Catherine M, Albright, T Alexander, Quinn, George, Berberian, Santos E, Cabreriza, Cara A, Garofalo, Alan D, Weinberg, Jose M, Dizon, Henry M, Spotnitz   +7 more
openaire   +2 more sources

Signal-Averaged Electrocardiography in Patients with Advanced Heart Failure: A Better Indicator of Left Ventricular Enlargement Compared with Conventional Electrocardiography [PDF]

Journal of Tehran University Heart Center, 2011
Background: The signal-averaged electrocardiography is a noninvasive method to evaluate the presence of the potentials generated by tissues activated later than their usual timing in the cardiac cycle.
Bita Omidvar, Hamid Reza Bonakdar, Mohammad Hossein Nikoo, Abolfath Alizadeh, Majid Haghjoo, Mohammad Alasti   +5 more
doaj   +2 more sources

Influence of QRS duration and axis on response to cardiac resynchronization therapy in chronic heart failure with reduced left ventricular ejection fraction: A single center study including patients with left bundle branch block

Cardiology Journal, 2020
BACKGROUND: The aim of the study was to evaluate QRS duration and axis as predictors of response to cardiac resynchronization therapy (CRT) in order to reduce the proportion of non-responders.
Tomasz Fabiszak, Piotr Łach, Jakub Ratajczak, Marek Koziński, Wojciech Krupa, Jacek Kubica   +5 more
doaj   +1 more source

Duration of Heart Failure With Reduced Ejection Fraction Associated With Electrocardiographic Outcomes Before and After Sacubitril/Valsartan

Journal of Cardiovascular Pharmacology and Therapeutics, 2022
Aim: Changes in QRS duration in patients with heart failure with reduced ejection fraction (HFrEF) after sacubitril/valsartan therapy is not fully understood.
Po-Lin Lin MD, Ying-Hsiang Lee MD, Lawrence Yu-Min Liu MD, PhD, Cheng-Ting Tsai MD, Ten-Fang Yang MD, Wei-Ru Chiou MD, Mu-Yang Hsieh MD, Hung-Yu Chang MD, Chun-Che Huang PhD   +8 more
doaj   +1 more source

T wave morphology descriptors and QRS duration.

, 2017
T wave morphology descriptors and QRS duration.
Markus Zabel (288017), Tim Friede (690576), Marek Malik (3826888), Katerina Hnatkova (3826882), Joachim Seegers (326784)   +4 more
core   +1 more source