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Vasovagal syncope

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https://www.readbyqxmd.com/read/29045956/-co-morbidity-of-vasovagal-syncope-and-postural-tachycardia-syndrome-with-allergic-diseases-in-children
#1
Y Liao, Q Y Zhang, H X Li, Y L Wang, P Liu, J B DU
OBJECTIVE: To explore the clinical characteristics of the co-morbidity of vasovagal syncope (VVS) and postural tachycardia syndrome (POTS) with allergic diseases in children. METHODS: A re-trospective analysis was launched to summarize the clinical data of children with VVS and POTS. They were divided into allergic group and non-allergic group according to the history of allergic diseases. The participants' clinical characteristics were compared between allergic group and non-allergic group using independent sample t test or rank sum test; composition comparisons were completed by Chi-square test...
October 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/29045952/-progress-in-diagnosis-and-management-of-syncope-in-children
#2
W R Xu, Y Liao, H F Jin, Q Y Zhang, C S Tang, J B DU
Syncope is a common emergency of children and adolescents, which has serious influence on the quality of life. Neurally-mediated syncope, including postural tachycardia syndrome, vasovagal syncope, orthostatic hypotension and orthostatic hypertension, is the main cause of syncope in children and adolescents. The main manifestations of neurally-mediated syncope are diverse, such as dizziness, headache, chest tightness, chest pain, pale complexion, fatigue, pre-syncope and syncope. Although the clinical manifestations are similar, each subtype of syncope has its hemodynamic feature and optimal treatment option...
October 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/29036615/monitoring-of-cerebral-oximetry-during-head-up-tilt-test-in-adults-with-history-of-syncope-and-orthostatic-intolerance
#3
E Bachus, H Holm, V Hamrefors, O Melander, R Sutton, M Magnusson, A Fedorowski
Aims: We applied near-infrared-spectroscopy (NIRS) to measure absolute frontal cerebral tissue oxygen saturation (SctO2) during head-up tilt test (HUT) in patients investigated for unexplained syncope. Methods and results: Synchronized non-invasive beat-to-beat haemodynamic monitoring, ECG, SctO2 (NIRS; normal range: 60-80%), and peripheral oxygen saturation (left hand, SpO2) were applied during HUT in a random sample of patients with unexplained syncope. Tracings of 54 patients (mean-age: 55 ± 19 years, 39% male) with negative HUT, vasovagal syncope (VVS), or orthostatic hypotension (OH) were analysed...
September 28, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28991754/temporal-analysis-of-cardiovascular-and-respiratory-complexity-by-multiscale-entropy-based-on-symbolic-dynamics
#4
Sina Reulecke, Sonia Charleston Villalobos, Andreas Voss, Ramon Gonzalez-Camarena, Jesus Antonio Gonzalez-Hermosillo, Jatziri Gaitan, Guadalupe Hernandez-Pacheco, Rico Schroeder, Tomas Aljama-Corrales
The effect of an orthostatic stress on cardiovascular and respiratory complexity was investigated to detect impaired autonomic regulation in patients with vasovagal syncope (VVS). Sixteen female patients and 12 age-matched healthy female subjects were enrolled in a passive 70° head-up tilt test. Also, 12 age-matched healthy male subjects were enrolled to study gender differences. Analysis was performed dynamically using various short-term (5 min) windows shifted by 1 min as well as by 20 min of orthostatic phase (OP) to evaluate local and global complexity...
October 9, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28958870/predictive-value-of-very-low-frequency-at-spectral-analysis-among-patients-with-unexplained-syncope-assessed-by-head-up-tilt-testing
#5
Michela Anna Pia Ciliberti, Francesco Santoro, Luigi Flavio Massimiliano Di Martino, Antonio Cosimo Rinaldi, Giuseppe Salvemini, Francesco Cipriani, Antonio Ivano Triggiani, Fiorenzo Moscatelli, Anna Valenzano, Matteo Di Biase, Natale Daniele Brunetti, Giuseppe Cibelli
BACKGROUND: The role of heart rate variability (HRV) in the prediction of vasovagal syncope during head-up tilt testing (HUTt) is unclear. AIM: To evaluate the ability of the spectral components of HRV at rest to predict vasovagal syncope among patients with unexplained syncope referred for HUTt. METHODS: Twenty-six consecutive patients with unexplained syncope were enrolled in the study. All patients underwent HRV evaluation at rest (very low frequency [VLF], low frequency [LF], high frequency [HF] and LF/HF ratio) and during HUTt...
September 25, 2017: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/28958329/vasovagal-syncope-to-pace-or-not-to-pace
#6
EDITORIAL
Brian Olshansky
No abstract text is available yet for this article.
October 3, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28958328/dual-chamber-pacing-with-closed%C3%A2-loop%C3%A2-stimulation-in-recurrent%C3%A2-reflex%C3%A2-vasovagal-syncope-the-spain-study
#7
RANDOMIZED CONTROLLED TRIAL
Gonzalo Baron-Esquivias, Carlos A Morillo, Angel Moya-Mitjans, Jesus Martinez-Alday, Ricardo Ruiz-Granell, Javier Lacunza-Ruiz, Roberto Garcia-Civera, Encarnacion Gutierrez-Carretero, Rafael Romero-Garrido
BACKGROUND: Pacing in vasovagal syncope remains controversial. OBJECTIVES: The authors evaluated dual-chamber pacing with closed loop stimulation (DDD-CLS) in patients with cardioinhibitory vasovagal syncope. METHODS: This randomized, double-blind, controlled study included Canadian and Spanish patients age ≥40 years, with high burden syncope (≥5 episodes, ≥2 episodes in the past year), and a cardioinhibitory head-up tilt test (bradycardia <40 beats/min for 10 s or asystole >3 s)...
October 3, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28895151/role-of-closed-loop-stimulation-pacing-cls-in-vasovagal-syncope
#8
REVIEW
Mohammed Ruzieh, Zaid Ammari, Osama Dasa, Saima Karim, Blair Grubb
Vasovagal syncope (VVS) or neurocardiogenic syncope is defined by transient loss of consciousness with spontaneous and rapid recovery. Recently, a closed loop stimulation pacing system (CLS) has emerged as a new strategy which appears superior to conventional pacing for patients with refractory syncope. However, it's efficacy remains of considerable debate and large randomized controlled clinical trials are needed. Between 2002 and 2017, 12 total studies evaluated the use of CLS pacing in patients with refractory VVS, and are summarized in this article...
September 12, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28833993/high-fidelity-simulation-in-training-dental-students-for-medical-life-threatening-emergency
#9
E Roy, V E Quinsat, O Bazin, P Lesclous, C Lejus-Bourdeau
INTRODUCTION: Any dental surgeon may be faced with a critical life-threatening emergency situation. In our university, all students in dentistry receive a standard course on emergency first aid. The aim of this prospective, comparative, single-centre study was to determine whether additional training on a high-fidelity patient simulator would improve student performance. METHODS: After approval by an Ethical Committee and written informed consent, the students of the Simulation group (n=42) had full-scale high-fidelity training on a patient simulator SimMan 3G(™) (3 hours by six students)...
August 23, 2017: European Journal of Dental Education: Official Journal of the Association for Dental Education in Europe
https://www.readbyqxmd.com/read/28810256/dose-response-relationship-between-the-risk-of-vasovagal-syncope-and-body-mass-index-or-systolic-blood-pressure-in-young-adults-undergoing-blood-tests
#10
Tomohide Yamada, Shintaro Yanagimoto
No abstract text is available yet for this article.
2017: Neuroepidemiology
https://www.readbyqxmd.com/read/28791782/predicting-short-term-risk-of-arrhythmia-among-patients-with-syncope-the-canadian-syncope-arrhythmia-risk-score
#11
Venkatesh Thiruganasambandamoorthy, Ian G Stiell, Marco L A Sivilotti, Brian H Rowe, Muhammad Mukarram, Kirtana Arcot, Kenneth Kwong, Andrew D McRae, George A Wells, Monica Taljaard
BACKGROUND: Syncope can be caused by serious occult arrhythmias not evident during initial emergency department (ED) evaluation. We sought to develop a risk tool for predicting 30-day arrhythmia or death after ED disposition. METHODS: We conducted a multicenter prospective cohort study at six tertiary care EDs and included adults (≥16 years) with syncope. We collected standardized variables from clinical evaluation and investigations including electrocardiogram and troponin at index presentation...
August 9, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/28779863/neurological-complications-of-cardiac-disease
#12
Nandini Madan, Karen S Carvalho
This article focuses on the complex interactions between the cardiovascular and neurologic systems. Initially, we focus on neurological complications in children with congenital heart disease both secondary to the underlying cardiac disease and complications of interventions. We later discuss diagnosis and management of common syncope syndromes with emphasis on vasovagal syncope. We also review the diagnosis, classification, and management of children and adolescents with postural orthostatic tachycardia syndrome...
February 2017: Seminars in Pediatric Neurology
https://www.readbyqxmd.com/read/28776824/pathophysiology-of-reflex-syncope-a-review
#13
REVIEW
Wayne O Adkisson, David G Benditt
In this correspondence, the pathophysiology of reflex syncope (vasovagal syncope, carotid sinus syndrome, and situational syncope) is reviewed, including clarification of the nomenclature.
September 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28721322/etiology-and-age-distribution-of-syncope-in-a-predominantly-african-american-population
#14
Ahmad Awan, Hasan Iftikhar, Fasil Tiruneh, Shahabuddin Soherwardi, Daniel Larbi
BACKGROUND: Syncope, the sudden transient loss of consciousness due to multiple etiologies, usually has worse outcomes in African Americans compared with other races because of other comorbidities. This study aims to identify a correlation between the etiologies of syncope and age in a predominantly African-American sample population to facilitate future investigations with potentially improved specificity to address this condition. METHODS: We reviewed the medical records of 155 patients who presented with syncope concerns to the emergency department at our university hospital...
June 14, 2017: Curēus
https://www.readbyqxmd.com/read/28718664/short-term-complications-for-percutaneous-ultrasound-guided-biopsy-of-renal-masses-in-adult-outpatients
#15
Lars René Rasmussen, Martina Loft, Tommy Kjærgaard Nielsen, Marie Bjødstrup Jensen, Søren Høyer, Arne Hørlyck, Ole Graumann
Background Ultrasound-guided percutaneous kidney tumor biopsy (UGPKB) plays an important role in the diagnosis of renal tumor but there are no consensuses with respect to the length and the extend of the post-biopsy observation period. Purpose To assess the short-term complication rate after UGPKB and to evaluate whether the onset of complications allows for the procedure to be performed in an outpatient setting with same-day discharge. Material and Methods Between March 2012 and March 2014, a total of 287 UGPKB were performed in an outpatient setting at a Danish university referral center...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28710604/pacing-and-vasovagal-syncope-back-to-our-physiologic-roots
#16
EDITORIAL
Robert S Sheldon, Satish R Raj
No abstract text is available yet for this article.
August 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/28699049/the-target-of-vasovagal-syncope-is-hemostasis-and-not-heart-protection
#17
EDITORIAL
Rolf R Diehl
No abstract text is available yet for this article.
August 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/28681121/indexes-of-cerebral-autoregulation-do-not-reflect-impairment-in-syncope-insights-from-head-up-tilt-test-of-vasovagal-and-autonomic-failure-subjects
#18
Pedro Castro, João Freitas, Rosa Santos, Ronney Panerai, Elsa Azevedo
PURPOSE: The study of dynamic cerebral autoregulation (CA), which adapts cerebral blood flow to arterial blood pressure (ABP) fluctuations, has been limited in orthostatic intolerance syndromes, mainly due to its stationary prerequisites hardly to meet during maneuvers to provoke syncope itself. New techniques of continuous estimates of CA could overcome this pitfall. We aimed to evaluate CA during head-up tilt test in common conditions causing syncope. METHODS: We compared three groups: eight controls; eight patients with autonomic failure due to familial amyloidotic polyneuropathy; eight patients with vasovagal syncope (VVS)...
July 5, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28674628/syndromes-of-orthostatic-intolerance-and-syncope-in-young-adults
#19
Viktor Hamrefors, Jasmina Medic Spahic, David Nilsson, Martin Senneby, Richard Sutton, Olle Melander, Artur Fedorowski
OBJECTIVE: To explore the clinical and neuroendocrine characteristics of syndromes of orthostatic intolerance and syncope in young adults. METHODS: Two hundred and thirty-six patients aged 18-40 years with orthostatic intolerance and/or syncope were examined by head-up tilt test (HUT). Plasma levels of epinephrine, norepinephrine, renin, C-terminal-pro-arginine-vasopressin (CT-proAVP), C-terminal-endothelin-1 and mid-regional-fragment of pro-atrial-natriuretic-peptide (MR-proANP) were analysed...
2017: Open Heart
https://www.readbyqxmd.com/read/28669088/vasovagal-syncope-with-asystole-the-role-of-cardiac-pacing
#20
REVIEW
Michele Brignole, Marco Tomaino, Alessio Gargaro
Whereas cardiac pacing has a very limited role overall in patients with vasovagal syncope (VVS), there are three reasons which support pacing efficacy in tilt-induced asystolic VVS. These are: (1) contrary to mixed and vasodepressor forms, an asystolic tilt response is specific, i.e., diagnostic, of VVS and is unlikely to occur in control patients without history of syncope and in patients with cardiac syncope; (2) contrary to mixed and vasodepressor forms, an asystolic tilt response predicts a similar asystolic event during prolonged ECG monitoring with a positive predictive value of 86%; (3) the available evidence from trials supports the efficacy of dual-chamber pacing with a low recurrence rate of syncope after pacing ranging from 6% up to 23% during 3 years of follow-up...
August 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
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