Results 91 to 100 of about 18,385 (254)

High‐frequency content within the QRS complex can predict ventricular tachyarrhythmias in hypertrophic cardiomyopathy

open access: yesJournal of Arrhythmia, Volume 41, Issue 4, August 2025.
This study first measured frequency power profiles during the QRS complex (QRS) in HCM patients. The high‐frequency content (150–250 Hz) hidden in the QRS can predict L‐VAs in HCM, even if fragmented or notched QRS is not observed. Abstract Introduction Frequency analysis of the electrocardiographic QRS complex (QRS) was performed to evaluate the ...
Takeshi Tsutsumi   +8 more
wiley   +1 more source

Fluid therapy and resuscitation in equine neonates [PDF]

open access: yes, 2019
Fluid therapy and resuscitation in equine neonates One of the main dilemmas when evaluating a sick neonatal foal is whether or not fluid therapy is indicated.
Paulussen, Ellen
core  

Vasovagal Syncope in the Older Patient

open access: yesJournal of the American College of Cardiology, 2008
Vasovagal syncope (VVS) has been diagnosed with increasing frequency in older patients since the head-up tilt-table test (HUT) was described over 2 decades ago. The incidence and prevalence of VVS in this age group remains unknown. Older individuals are more likely to display a dysautonomic hemodynamic pattern with a predominantly hypotensive response ...
Steve W Parry   +2 more
openaire   +4 more sources

Extra‐cardiac vagal stimulation: Clinical utility of a novel diagnostic and therapeutic tool in supraventricular tachycardia

open access: yesJournal of Arrhythmia, Volume 41, Issue 4, August 2025.
Extracardiac vagal stimulation (ECVS) is a novel, safe tool inducing controlled AV/VA block. It assists SVT differential diagnosis, pathway unmasking, and ablation endpoint confirmation, adding value to EP procedures for supraventricular tachycardias.
Jose Carlos Pachon‐M   +8 more
wiley   +1 more source

Recurrent Laughter-induced Syncope [PDF]

open access: yes, 2012
Syncope is a common presenting complaint in Neurology clinics or Emergency departments, but its causes are sometimes difficult to diagnose. Apart from vasovagal attacks, other benign, neurally mediated syncopes include “situational” syncopes, which occur
Gaitatzis, A, Petzold, A
core   +1 more source

Spectral analysis of heart rate variability for assessment of autonomic nervous system activity during head-up tilt table testing [PDF]

open access: yes, 2014
Spectral analysis of heart rate variability was used to assess changes in activity of autonomic nervous system (ANS) in 84 patients with history of recurrent syncope and 21 normal controls.
et al., Likar, Polona
core   +1 more source

Real‐time fetal brain and placental T2* mapping at 0.55T MRI

open access: yesMagnetic Resonance in Medicine, Volume 94, Issue 2, Page 615-624, August 2025.
ABSTRACT Purpose To provide real‐time, organ‐specific quantitative information — specifically placental and fetal brain T2 * — to optimize and personalize fetal MRI examinations. Methods A low‐latency setup enables real‐time processing, including segmentation, T2* fitting, and centile calculation.
Jordina Aviles Verdera   +9 more
wiley   +1 more source

Oral Apolipoprotein A-I Mimetic D-4F Lowers HDL-Inflammatory Index in High-Risk Patients: A First-in-Human Multiple-Dose, Randomized Controlled Trial. [PDF]

open access: yes, 2017
A single dose of the apolipoprotein (apo)A-I mimetic peptide D-4F rendered high-density lipoprotein (HDL) less inflammatory, motivating the first multiple-dose study. We aimed to assess safety/tolerability, pharmacokinetics, and pharmacodynamics of daily,
Bloedon, LeAnne T.   +7 more
core   +2 more sources

Tilt Test in Elderly Patients with Syncope of Unknown Etiology: Experience with Pharmacological Stimulation with Nitroglycerin [PDF]

open access: yes, 2005
Está demonstrado o papel do teste de inclinação na avaliação de doentes com síncope de causa não esclarecida. Nos idosos, a prevalência de episódios sincopais aumenta, associa-se a pior prognóstico e, frequentemente, implica o recurso a múltiplos exames ...
Antunes, E   +8 more
core  

Triggers for atrial fibrillation. the role of anxiety [PDF]

open access: yes, 2019
Atrial fibrillation (AF) is the most widely recognized arrhythmia. Systemic arterial hypertension, diabetes, obesity, heart failure, and valvular heart diseases are major risk factors for the onset and progression of AF.
Ceccacci, Andrea   +10 more
core   +1 more source

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