Results 141 to 150 of about 111,366 (373)

Integrative Evidence From Metabolome‐Wide Mendelian Randomization and Animal Models Implicates Tyrosine in Cardiac Hypercontractility and Arrhythmia Risk

Food Frontiers, EarlyView.
Plasma metabolome‐wide Mendelian randomization analysis established a causal link between tyrosine and arrhythmia. GWAS meta‐analysis identified tyrosine‐associated loci linked to cardiovascular risk factors. Animal studies confirmed that oral tyrosine intake modulates heart rhythm via adrenergic signaling activation.
Zhikang Cao, Huiying Liu, Peng Chen, Liyue Chen, Zhixin Chen, Jiaqiang Lin, Zixuan Fu, Zhipeng Li   +7 more
wiley   +1 more source

Effect of N-Butylscopolammonium Bromide and Metamizol Sodium on Heart Rate, Blood Pressure, and Echocardiographic Measurements in Warmblood Horses With Aortic and Mitral Valve Regurgitation. [PDF]

J Vet Intern Med
ABSTRACT Background Administration of N‐butylscopolammonium bromide (NBB) with metamizol sodium (NBBM) causes tachycardia and hypertension, and has been associated with accentuated cardiac murmurs. Objectives To evaluate the effect of a pharmacological challenge using NBBM on valvular regurgitation and cardiac murmurs in horses with aortic (AR) and ...
Dufourni A, Demeyere M, Vernemmen I, Van Steenkiste G, Verhaeghe LM, van Loon G, Decloedt A.   +6 more
europepmc   +2 more sources

4D Flow MRI Velocity and Turbulence Mapping in Mild Valvular Heart Disease

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background Valvular heart disease (VHD) commonly leads to the development of turbulent blood flow. Turbulent kinetic energy (TKE), measured with 4D flow MRI, may be a complement to current metrics for early identification of VHD. Purpose To investigate TKE as a marker of VHD in relation to flow velocity and cardiovascular geometry.
Tamara Bianchessi, Chiara Trenti, Carl‐Johan Carlhäll, Tino Ebbers, Jan Engvall, Farkas Vanky, Federica Viola, Petter Dyverfeldt   +7 more
wiley   +1 more source

Quantitative Confounder Analysis of Electrocardiogram Signals in Cardiac Magnetic Resonance at 1.5, 3 and 7 T—Assessing Standardized Electrode Positions and Sequence Types—Towards Quality Assurance

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background The electrocardiogram (ECG) used for gating in cardiac MRI may be compromised by multiple confounders inside the scanner bore. Purpose To quantify the influence of magnetic field strengths (1.5 T/3 T/7 T), standardized electrode positions, and imaging sequences on ECG signals used for gating. Study Type Prospective.
Richard Hickstein, Stephanie Wiesemann, Darian Viezzer, Denise Kleindienst, Teodora Chitiboi, Bogdan Andrei Gheorghita, Jens Wetzl, Thomas Hadler, Sebastian Dietrich, Sebastian Schmitter, Jeanette Schulz‐Menger   +10 more
wiley   +1 more source

Quantitative MRI Values for Atrial and Ventricular Parameters in Altitude‐Dwelling Youth

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background The hypoxic environment on the Qinghai Plateau significantly exacerbates myocardial remodeling, with sex/ethnicity‐specific variations in cardiac parameters among local youth. Current cardiac MRI reference values lack data from physiologically adapted populations on this plateau.
Xiumei Xiao, Hui Xu
wiley   +1 more source

Relation Between Left Ventricular Diastolic Pressure and Myocardial Segment Length and Observations on the Contribution of Atrial Systole [PDF]

, 1960
R. J. Linden, J. H. Mitchell
openalex   +1 more source

Alcohol Septal Ablation in Hypertrophic Obstructive Cardiomyopathy: Long‐Term Follow‐Up of Deformations and Hemodynamics

Journal of Magnetic Resonance Imaging, EarlyView.
ABSTRACT Background A detailed evaluation of hemodynamics, supportive morphology, and deformation may help uncover the pathophysiology of hypertrophic obstructive cardiomyopathy (HOCM) and the changes wrought by alcohol septal ablation (ASA). Purpose To investigate the global cardiac volume, myocardial deformation, and hemodynamic characteristics ...
Kenichiro Suwa, Kazuto Ohno, Terumori Satoh, Ryota Sato, Keisuke Iguchi, Yuichiro Maekawa   +5 more
wiley   +1 more source

Personalized auricular vagus nerve stimulation: beat-to-beat deceleration dominates in systole-gated stimulation during inspiration - a pilot study

Frontiers in Physiology
Neuromodulation comes into focus as a non-pharmacological therapy with the vagus nerve as modulation target. The auricular vagus nerve stimulation (aVNS) has emerged to treat chronic diseases while re-establishing the sympathovagal balance and activating
Johannes Tischer, Jozsef Constantin Szeles, Eugenijus Kaniusas   +2 more
doaj   +1 more source

INDENTATION OF THE PELLICLE OF TETRAHYMENA AT THE CONTRACTILE VACUOLE PORE BEFORE SYSTOLE [PDF]

, 1969
Philip B. Dunham, L. C. Stoner
openalex   +1 more source

Fetal Tricuspid Annular Plane Systolic Excursion in the Surveillance of Intra‐Abdominal Umbilical Vein Varix

Journal of Ultrasound in Medicine, EarlyView.
Objective To describe the application of tricuspid annular plane systolic excursion (TAPSE) in monitoring cardiac function in cases of fetal intra‐abdominal umbilical vein varix (FIUVV). Methods The sample consisted of all cases of FIUVV diagnosed in a tertiary medical center between 2018 and 2023 that were assessed by sonographic fetal TAPSE.
Yossi Geron, Lior Drukker, Sharon Perlman, Ran Matot, Victoria Hermann, Natav Hendin, Ron Bardin, Yinon Gilboa, Ron Charach   +8 more
wiley   +1 more source