keyword
MENU ▼
Read by QxMD icon Read
search

Vasovagal

keyword
https://www.readbyqxmd.com/read/28226590/delta-space-plot-analysis-of-cardiovascular-coupling-in-vasovagal-syncope-during-orthostatic-challenge
#1
S Reulecke, S Charleston-Villalobos, A Voss, R Gonzalez-Camarena, M Gaitan-Gonzalez, J Gonzalez-Hermosillo, G Hernandez-Pacheco, T Aljama-Corrales, S Reulecke, S Charleston-Villalobos, A Voss, R Gonzalez-Camarena, M Gaitan-Gonzalez, J Gonzalez-Hermosillo, G Hernandez-Pacheco, T Aljama-Corrales, S Reulecke, S Charleston-Villalobos, G Hernandez-Pacheco, M Gaitan-Gonzalez, J Gonzalez-Hermosillo, A Voss, T Aljama-Corrales, R Gonzalez-Camarena
In this work, a graphical method to study cardiovascular coupling, called delta space plot analysis (DSPA), was introduced. The graphical representation is susceptible to be parameterized in shape and orientation. The usefulness of this technique was studied on cardiovascular data from patients with vasovagal syncope (VVS) and from controls. The study included 15 female patients diagnosed with VVS and 11 age-matched healthy female subjects. All subjects were enrolled in a head-up tilt (HUT) test, breathing normally, including 5 minutes of supine position (baseline) and 18 minutes of 70° orthostatic phase...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28217221/byung-gyu-kim-et-al-reduced-systemic-vascular-resistance-is-the-underlying-hemodynamic-mechanism-in-nitrate-stimulated-vasovagal-syncope-during-head-up-tilt-table-test
#2
Arttu Eräranta, Antti Tikkakoski, Ilkka H Pörsti
No abstract text is available yet for this article.
February 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/28212873/temperament-and-character-personality-dimensions-in-nitrate-tilt-induced-vasovagal-syncope-patients
#3
Vincenzo Russo, Ahmed AlTurki, Anna Rago, Riccardo Proietti, Guillaume Chaussé, Alessio Maria Monteleone, Pasquale Scognamiglio, Palmiero Monteleone, Gerardo Nigro
INTRODUCTION: Vasovagal syncope (VVS) is a clinical syndrome characterized by transient loss of consciousness and postural tone that is due to a temporary and spontaneously self-terminating global cerebral hypoperfusion. It is known that personality modulates the individual's sensitivity to stressors, and emotional arousal and psychologic uncertainty are conditions contributing to vasodepressor syncope. Therefore it is postulated that personality characteristics of VVS patients could have a role in the pathophysiology of VVS...
February 14, 2017: Hellenic Journal of Cardiology: HJC, Hellēnikē Kardiologikē Epitheōrēsē
https://www.readbyqxmd.com/read/28100453/mechanisms-of-vasovagal-syncope-in-the-young-reduced-systemic-vascular-resistance-versus-reduced-cardiac-output
#4
Julian M Stewart, Marvin S Medow, Richard Sutton, Paul Visintainer, David L Jardine, Wouter Wieling
BACKGROUND: Syncope is a sudden transient loss of consciousness and postural tone caused by cerebral hypoperfusion. The most common form is vasovagal syncope (VVS). Presyncopal progressive early hypotension in older VVS patients is caused by reduced cardiac output (CO); younger patients have reduced systemic vascular resistance (SVR). Using a priori criteria for reduced CO (↓CO) and SVR (↓SVR), we studied 48 recurrent young fainters comparing subgroups of VVS with VVS-↓CO, VVS-↓SVR, and both VVS-↓CO&↓SVR...
January 18, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28093516/tilt-induced-vasovagal-syncope-and-psychogenic-pseudosyncope-overlapping-clinical-entities
#5
(no author information available yet)
No abstract text is available yet for this article.
January 17, 2017: Neurology
https://www.readbyqxmd.com/read/28090497/factors-associated-with-vasovagal-reactions-in-apheresis-plasma-and-whole-blood-donors-a-statistical-epidemiological-study-in-a-european-donor-cohort
#6
Jansen N Seheult, Merete Eis Lund, Mark H Yazer, Kjell Titlestad
No abstract text is available yet for this article.
December 2016: Blood Research
https://www.readbyqxmd.com/read/28079781/transcutaneous-nerve-stimulation-for-pain-relief-during-office-hysteroscopy-a-randomized-controlled-trial
#7
Juan F Lisón, Juan J Amer-Cuenca, Silvia Piquer-Martí, Vicente Benavent-Caballer, Gemma Biviá-Roig, Alejandro Marín-Buck
OBJECTIVE: To evaluate the pain-relieving effect of transcutaneous electrical nerve stimulation (TENS) during office-based hysteroscopy without sedation. METHODS: We conducted a randomized, double-blind, placebo-controlled trial. Participants were randomly assigned to the active TENS, placebo TENS, or control group. The active TENS intervention consisted of a varying high-frequency (80-100 Hz), 400-microseconds, individually adjusted, high-intensity TENS application with two self-adhesive electrodes placed parallel to the spinal cord at the T10-L1 and S2-S4 levels...
February 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28075095/needle-phobia-a-vasovagal-response-during-acupuncture
#8
Le Luo, Chunhua Lai
No abstract text is available yet for this article.
December 15, 2016: American Family Physician
https://www.readbyqxmd.com/read/28073658/copeptin-levels-in-patients-with-vasovagal-syncope
#9
Panayota Flevari, Dionyssios Leftheriotis, Christos Kroupis, George Antonakos, John Lekakis, Kleanthi Dima
BACKGROUND AND PURPOSE: Vasovagal syncope (VVS) is linked to more than one pathophysiologic mechanisms. Copeptin, an emerging cardiovascular marker, is a surrogate for arginine-vasopressin, which increases following VVS. We aimed to assess the dynamic pattern of copeptin levels in typical VVS, categorized by the degree of vasoconstriction during orthostasis, and healthy controls. METHODS: The following groups were studied: Group A (n=21), with adequate limb vasoconstriction during the first min...
March 1, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28072962/-relationship-between-blood-routine-test-parameters-and-syncopal-recurrence-of-vasovagal-syncope-in-children
#10
J Y Song, H X Li, X Y Li, Y L Wang, H F Jin, J B Du
Objective: To explore the relationship between venous blood routine test parameters and syncopal recurrence of children with vasovagal syncope (VVS). Method: Sixty-three children (male 32, female 31) diagnosed as VVS in Department of Pediatrics, Peking University First Hospital from November 2010 to October 2015 were included in a case observational study.Their mean age was (11.2±2.7) years and basic treatment such as predisposing causes avoiding, standing training, autonomic nervous function exercise and oral rehydration salts were advised to them...
January 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28055999/-role-of-the-sympathetic-nervous-system-in-vasovagal-syncope-and-rationale-for-beta-blockers-and-norepinephrine-transporter-inhibitors
#11
Manlio F Márquez, Jorge Rafael Gómez-Flores, Jesús A González-Hermosillo, Teresita de Jesús Ruíz-Siller, Manuel Cárdenas
Vasovagal or neurocardiogenic syncope is a common clinical situation and, as with other entities associated with orthostatic intolerance, the underlying condition is a dysfunction of the autonomic nervous system. This article reviews various aspects of vasovagal syncope, including its relationship with orthostatic intolerance and the role of the autonomic nervous system in it. A brief history of the problem is given, as well as a description of how the names and associated concepts have evolved. The response of the sympathetic system to orthostatic stress, the physiology of the baroreflex system and the neurohumoral changes that occur with standing are analyzed...
December 29, 2016: Medwave
https://www.readbyqxmd.com/read/28034919/management-of-vasovagal-syncope-where-are-we-today
#12
Seamas C Donnelly
No abstract text is available yet for this article.
December 2016: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/28025351/immediate-adverse-events-in-interventional-pain-procedures-a-multi-institutional-study
#13
Carrie M Carr, Christopher T Plastaras, Matthew J Pingree, Matthew Smuck, Timothy P Maus, Jennifer R Geske, Christine A El-Yahchouchi, Zachary L McCormick, David J Kennedy
SETTING: Interventional procedures directed toward sources of pain in the axial and appendicular musculoskeletal system are performed with increasing frequency. Despite the presence of evidence-based guidelines for such procedures, there are wide variations in practice. Case reports of serious complications such as spinal cord infarction or infection from spine injections lack appropriate context and create a misleading view of the risks of appropriately performed interventional pain procedures...
December 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/27932282/serum-cardiac-troponin-i-in-canine-syncope-and-seizures
#14
E Dutton, J Dukes-McEwan, P J Cripps
OBJECTIVE: To determine if serum cardiac troponin I (cTnI) concentration distinguishes between cardiogenic syncope and collapsing dogs presenting with either generalized epileptic seizures (both with and without cardiac disease) or vasovagal syncope. ANIMALS: Seventy-nine prospectively recruited dogs, grouped according to aetiology of collapse: generalized epileptic seizures (group E), cardiogenic syncope (group C), dogs with both epileptic seizures and cardiac disease (group B), vasovagal syncope (group V) or unclassified (group U)...
February 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/27903377/-a-case-of-vasovagal-syncope-treatedwith-pacemaker-with-rate-drop-response
#15
T Lin, X W Xu, X Wei
No abstract text is available yet for this article.
October 24, 2016: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/27883352/-long-term-prognosis-in-patients-with-vasovagal-syncope-after-pacemaker-implantation
#16
REVIEW
Daria Bałczewska, Krzysztof Kaczmarek, Paweł Ptaszyński, Jerzy K Wranicz, Iwona Cygankiewicz
Patients with syncope, without presence of a structural or primary electrical disease, have a very good prognosis. On the other hand, recurring syncope has a negative impact on quality of life and involves a real risk of physical injuries. Vasovagal syncope usually requires no medical therapy and the most commonly recommended instruction include avoidance of fainting triggers, exercise that mainly provoke leg muscles tension, increase salt consumption and drink indicated amount of fluids. In the case cardioinhibitory type of vasovagal syncope the pacemaker implantation can consider...
November 25, 2016: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/27865628/the-genesis-and-presentation-of-anxiety-in-disorders-of-autonomic-overexcitation
#17
Andrew P Owens, David A Low, Valeria Iodice, Hugo D Critchley, Christopher J Mathias
INTRODUCTION: We investigated the genesis and presentation of previously-reported anxiety in disorders of autonomic overexcitation in relation to interoception, body vigilance and trauma to test our hypothesis that patients with the postural tachycardia syndrome (PoTS), vasovagal syncope (VVS) and essential hyperhidrosis (EH) represent atypical anxiety phenotypes in whom affective symptoms are more related to apprehension and vigilance of physiological (interoceptive) feedback than neurotic or trauma-related factors...
October 19, 2016: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/27861957/improved-donor-safety-in-high-volume-apheresis-collections
#18
Ralph R Vassallo, Marjorie D Bravo, Hany Kamel
BACKGROUND: Separators use 1960s sex-based nomograms to estimate apheresis donor blood volume and to calculate the 15% maximum extracorporeal and collection volumes. As US body habitus changes, proportional overestimation of the maximum safe collection volume may become clinically significant with large-volume collections. We correlated 2 years of vasovagal reaction (VVR) data with 148,416 Trima apheresis procedure parameters to identify trends. STUDY DESIGN AND METHODS: Only platelet/plasma with or without red blood cell (RBC) procedures yielded collection volumes of at least 900 mL with no saline replacement...
November 10, 2016: Transfusion
https://www.readbyqxmd.com/read/27861704/is-outpatient-hysteroscopy-the-new-gold-standard-results-from-an-11-year-prospective-observational-study
#19
Tony Ma, Emma Readman, Lauren Hicks, Jenny Porter, Melissa Cameron, Lenore Ellett, Kate Mcilwaine, Janine Manwaring, Peter Maher
BACKGROUND: In Australia, gynaecologists continue to investigate women with abnormal bleeding and suspected intrauterine pathology with inpatient hysteroscopy despite some evidence in the literature that that there is no difference in safety and outcome when compared to an outpatient procedure. AIMS: This prospective study assessed the safety, effectiveness and acceptability of outpatient hysteroscopy over 11 years at a tertiary hospital in Australia. Resource savings were then calculated...
November 15, 2016: Australian & New Zealand Journal of Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/27845151/data-fusion-for-paroxysmal-events-classification-from-eeg
#20
Evangelia Pippa, Evangelia I Zacharaki, Michael Koutroumanidis, Vasileios Megalooikonomou
BACKGROUND: Spatiotemporal analysis of electroencephalography is commonly used for classification of events since it allows capturing dependencies across channels. The significant increase of feature vector dimensionality however introduce noise and thus it does not allow the classification models to be trained using a limited number of samples usually available in clinical studies. NEW METHOD: Thus, we investigate the classification of epileptic and non-epileptic events based on temporal and spectral analysis through the application of three different fusion schemes for the combination of information across channels...
January 1, 2017: Journal of Neuroscience Methods
keyword
keyword
68643
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"