Results 71 to 80 of about 112,115 (255)

The value of QRS onset of the outflow tract PVC in V1 and V2 leads recorded in fourth, third, and second intercostal spaces to differentiate main origins of premature ventricular contraction—A prospective cohort study

open access: yesHealth Science Reports, 2022
Background Electrocardiography (ECG) is now proposed as a simple and cost‐effective tool to determine the location of arrhythmias before ablation. We aimed to examine the value of the QRS onset of outflow tract PVC in V1 and V2 leads recorded in fourth ...
Mohammad V. Jorat   +7 more
doaj   +1 more source

Feline Hypertrophic Cardiomyopathy: A Spontaneous Large Animal Model of Human HCM. [PDF]

open access: yes, 2017
Hypertrophic cardiomyopathy (HCM) is a common disease in pet cats, affecting 10-15% of the pet cat population. The similarity to human HCM, the rapid progression of disease, and the defined and readily determined endpoints of feline HCM make it an ...
Freeman, Lisa M   +4 more
core   +2 more sources

Material transport in the left ventricle with aortic valve regurgitation

open access: yes, 2018
This experimental in vitro work investigates material transport properties in a model left ventricle in the case of aortic regurgitation, a valvular disease characterized by a leaking aortic valve and consequently double-jet filling within the elastic ...
Di Labbio, Giuseppe   +2 more
core   +1 more source

Undiagnosed hypertrophic obstructive cardiomyopathy during transcatheter aortic valve replacement: a case report

open access: yesJournal of Medical Case Reports, 2018
Background Transcatheter aortic valve replacement is indicated for severe symptomatic aortic stenosis in patients who have a very high or prohibitive surgical risk as assessed pre-procedurally by the Society of Thoracic Surgery Risk Score, EuroSCORE (II),
Kevin R. Olsen   +3 more
doaj   +1 more source

Right ventricular outflow tract velocity time integral-to-pulmonary artery systolic pressure ratio: a non-invasive metric of pulmonary arterial compliance differs across the spectrum of pulmonary hypertension. [PDF]

open access: yes, 2019
Pulmonary arterial compliance (PAC), invasively assessed by the ratio of stroke volume to pulmonary arterial (PA) pulse pressure, is a sensitive marker of right ventricular (RV)-PA coupling that differs across the spectrum of pulmonary hypertension (PH ...
Bhattacharya, Priyanka T.   +15 more
core   +2 more sources

A One Health Approach to Hypertrophic Cardiomyopathy. [PDF]

open access: yes, 2017
Hypertrophic cardiomyopathy (HCM) is the most common inherited cardiac disease in humans and results in significant morbidity and mortality. Research over the past 25 years has contributed enormous insight into this inherited disease particularly in the ...
Stern, Joshua A, Ueda, Yu
core   +1 more source

Clinical impact of left ventricular outflow tract obstruction in takotsubo cardiomyopathy.

open access: yesCirculation Journal, 2015
BACKGROUND A hyperdynamic state of the basal left ventricle sometimes results in obstruction of the left ventricular outflow tract (LVOT). However, the prevalence, clinical presentation, and prognostic effect of LVOT obstruction in takotsubo ...
Tetsuma Kawaji   +9 more
semanticscholar   +1 more source

Physiological and clinical consequences of relief of right ventricular outflow tract obstruction late after repair of congenital heart defects. [PDF]

open access: yes, 2006
BACKGROUND: Right ventricular outflow tract obstruction (RVOTO) is a common problem after repair of congenital heart disease. Percutaneous pulmonary valve implantation (PPVI) can treat this condition without consequent pulmonary regurgitation or ...
Bonhoeffer, P   +10 more
core   +1 more source

Echocardiographic evaluation of velocity ratio, velocity time integral ratio, and pulmonary valve area in dogs with pulmonary valve stenosis. [PDF]

open access: yes, 2018
BackgroundVelocity ratio, velocity time integral (VTI) ratio, and pulmonary valve area indexed to body surface area (iPVA) are methods of assessment of pulmonary valve stenosis (PS) severity that are less dependent on blood flow. Studies evaluating these
Bélanger, Catherine   +5 more
core   +1 more source

Is there a utility for QRS dispersion in clinical practice? [PDF]

open access: yes, 2017
Prognostic markers derived from standard ECG have always been seductive. Increased dispersion of durations of the P wave, of the QRS complex, or of the QT interval has been associated with the risk of atrial fibrillation, ventricular arrhythmias, sudden ...
Chávez-González, Elibet   +2 more
core   +4 more sources

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