Results 81 to 90 of about 105,442 (300)

Artificial intelligence for heart rate variability analyzing with arrhythmias [PDF]

, 2019
Introduction. Existing standards of Heart Rate Variability (HRV) technology limit its use to sinus rhythm. A small number of extrasystoles is allowed, if the device used has special procedures for the detection and replacement of ectopic complexes ...
Marchitto, N., Martynenko, A., Ostropolets, S., Raimondi, G.   +3 more
core   +1 more source

Antegrade and Retrograde Decremental Conduction Properties of an Accessory Pathway Associated with the Coronary Sinus Musculature

Indian Pacing and Electrophysiology Journal, 2015
A 32-year-old man underwent catheter ablation of an orthodromic atrioventricular reentrant tachycardia. The sinus rhythm electrocardiogram exhibited a normal PQ interval and no delta waves, but atrial pacing produced a prolonged PQ interval and wide QRS ...
Kohki Nakamura, MD, Shigeto Naito, MD, Kenichi Kaseno, MD, Shigeru Oshima, MD   +3 more
doaj   +1 more source

Mono‐dimensional, two‐dimensional and Doppler echocardiographic measurements in healthy Standardbred neonatal foals in the first 5 days of life

Equine Veterinary Journal, EarlyView.
Abstract Background Bodyweight, age and breed influence the echocardiographic assessment of foals. There are no echocardiographic studies in Standardbred neonatal foals. Objectives To describe echocardiographic values for selected variables, evaluate intra‐ and inter‐observer variability and assess cardiac changes in the first 5 days of life in healthy
Fernanda Timbó D'el Rey Dantas, Giulia Forni, Gayle Hallowell, Carolina Castagnetti, Laura Menchetti, Giovanni Romito, Aliai Lanci, Jole Mariella, Francesca Freccero   +8 more
wiley   +1 more source

Automatic Mode Switching in Atrial Fibrillation [PDF]

, 2005
Automatic mode switching (AMS) algorithms were designed to prevent tracking of atrial tachyarrhythmias (ATA) or other rapidly occurring signals sensed by atrial channels, thereby reducing the adverse hemodynamic and symptomatic consequences of a rapid ...
Antonio De, Simone, Enrico, Romano, Giuseppe, Stabile   +2 more
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Prolonged PR interval, first-degree heart block and adverse cardiovascular outcomes: a systematic review and meta-analysis [PDF]

, 2016
Objective: First-degree atrioventricular block is frequently encountered in clinical practice and is generally considered a benign process. However, there is emerging evidence that prolonged PR interval may be associated with adverse outcomes. This study
Barker, Diane, Beynon, Rhys, Buchan, Iain, Kwok, Chun Shing, Loke, Yoon K, Mamas, Mamas A, Morley-Davies, Adrian, Myint, Phyo K, Nolan, James, Patwala, Ashish, Rashid, Muhammad, Satchithananda, Duwarakan   +11 more
core   +1 more source

Two causes of COVID‐19‐related myocardial injury‐associated cardiogenic shock: Myocarditis and microvascular thrombosis

ESC Heart Failure, Volume 12, Issue 2, Page 1514-1522, April 2025.
Takamasa Iwai, Hirohiko Aikawa, Yoshiaki Morita, Keiko Ohta‐Ogo, Teruo Noguchi   +4 more
wiley   +1 more source

Unexpected Giant Right Coronary Artery Aneurysm Diagnosed by Computed Tomography Angiography in the Emergency Department

Journal of Clinical Ultrasound, EarlyView.
3D Volume Rendering coronary CTA reconstruction showing a giant thrombosed aneurysm of the proximal right coronary artery ABSTRACT Giant coronary artery aneurysms (GCAA) are usually defined as diameter > 8 mm or > 400% of the adjacent normal segment; they are very rare (reported prevalence ≈0.02%).
Stefano Giusto Picchi, Giulia Lassandro, Rosita Comune, Filomena Pezzullo, Stefania Tamburrini, Giulio Cocco, Nino Cocco, Domenico Tafuri, Antonio Corvino   +8 more
wiley   +1 more source

Combination of electrophysiological mapping, radiofrequency catheter ablation, and atrial appendectomy in a 5-year-old girl with tachycardia-induced cardiomyopathy: a case report

Journal of Cardiothoracic Surgery
Background Atrial tachycardia (AT) originating from the left atrial appendage (LAA) is uncommon and the most difficult arrhythmia to eliminate. Therefore, we present the case of a 5-year-old girl with tachycardia-induced cardiomyopathy (TIC) caused by AT
Min Zhang, Xiaoxiao Cao, Yong Zhang
doaj   +1 more source

Investigation Into the Utility of 3D Speckle‐Tracking Echocardiography in Detecting Coronary Artery Microcirculation Dysfunction in Ischemia With Non‐Obstructive Coronary Artery Disease

Journal of Clinical Ultrasound, EarlyView.
By detecting the subtle regional contractile dysfunction, 3D‐STE can efficiently distinguish CMCD and present a novel strategy for diagnosing INOCA. ABSTRACT Aim To assess the utility of three‐dimensional speckle‐tracking echocardiography (3D‐STE) in detecting coronary artery microcirculation dysfunction (CMCD) with non‐obstructive coronary artery ...
Yuexia Ma, Lina Guan, Xiaohong Li, Jianqiang Zhang, Xiaomei Li, Yuming Mu   +5 more
wiley   +1 more source

Frequency Analysis of Atrial Fibrillation From the Surface Electrocardiogram [PDF]

, 2004
Atrial fibrillation (AF) is the most common arrhythmia encountered in clinical practice. Neither the natural history of AF nor its response to therapy are sufficiently predictable by clinical and echocardiographic parameters.
Bollmann, Andreas, Husser, Daniela, Olsson, Bertil, Sornmo, Leif, Stridh, Martin   +4 more
core