Syncope Vasovagal
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Syncope in Patients with Cardiac Pacemakers
Abstract Introduction: It is challenging to diagnose syncope in patients with pacemakers. Because these patients have increased morbidity and mortality risks, they require immediate attention to determine the causes in order to provide appropriate treatment. This study aimed to investigate the causes and predictive factors of syncope as well as the methods
Braz. J. Cardiovasc. Surg.. Publicado em: 2021-02
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2. Structural heart disease as the cause of syncope
We described the clinical evolution of patients with structural heart disease presenting at the emergency room with syncope. Patients were stratified according to their syncope etiology and available scores for syncope prognostication. Cox proportional hazard models were used to investigate the relationship between etiology of the syncope and event-free surv
Braz J Med Biol Res. Publicado em: 01/03/2018
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3. Efeitos da suplementação de sal na profilaxia da síncope vasovagal : ensaio clínico randomizado
Introdução: Síncope e sintomas ortostáticos são comuns em pessoas saudáveis. A suplementação de sal é utilizada em pacientes com melhora na resposta pressora e aumento da tolerância ortostática. Nós testamos à hipótese de que uma suplementação de sal aumentaria a tolerância ortostática em voluntários saudáveis. Métodos e Resultados: Vint
Publicado em: 2009
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4. "Estudo comparativo entre o tratamento farmacológico, o treinamento físico moderado e o treinamento postural passivo em pacientes portadores de síncope neurocardiogênica" / Comparative study among pharmacological treatment, mild exercise training and tilt training in neurocardiogenic syncope patients
Neurocardiogenic syncope is an autonomic disfunction that leads to hypotension and loss of conciousness. Seventy patients were randomized in 4 groups: control, physical training, tilt training and pharmacological treatment. Clinical outcome, anxiety levels and baroreflex sensitivity for heart rate and muscle sympathetic nervous activity were evaluated. Lower
Publicado em: 2006
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5. Permanent pacing for cardioinhibitory malignant vasovagal syndrome.
OBJECTIVE--To evaluate the effect of permanent pacing in cardioinhibitory malignant vasovagal syndrome. PATIENTS AND METHODS--37 patients with permanent pacemakers for cardioinhibitory malignant vasovagal syndrome. All presented with syncope (median six episodes, median frequency two episodes a year) and after conventional investigation and invasive electrop
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6. Malignant vasovagal syncope: a randomised trial of metoprolol and clonidine.
OBJECTIVE: To evaluate the efficacy of head up tilt guided treatment with metoprolol and clonidine in preventing the recurrence of syncope in patients with malignant vasovagal syncope. PATIENTS: 20 patients (9 men and 11 women, mean age 33 (SD 17), range 14 to 62 years) with severe symptoms. DESIGN: Randomised double blind crossover trial; efficacy was asses
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7. Lack of variation in venous tone potentiates vasovagal syncope.
OBJECTIVE--To investigate the peripheral venous response to head up tilting in malignant vasovagal syndrome. PATIENTS--31 Patients with unexplained syncope or dizziness referred from the cardiology department. METHODS--Changes in calf venous volume were studied by a radionuclide technique during 45 degrees head up tilt testing. RESULTS--During tilt testing s
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8. Autonomic control of asystolic vasovagal syncope.
A 30 year old woman with a lifelong history of severe, recurrent, vasovagal syncope became asystolic for 30 seconds after 37 minutes of 60 degrees head-up tilt. During early tilt, sympathetic activity, heart rate, left ventricular contractility, and cardiac output increased. Mean blood pressure was initially maintained. Presyncope was associated with maximal
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9. Does pacing help in vasovagal syncope?
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10. Use of glycopyrrolate as a prophylaxis for vaso-vagal syncope during retinal photocoagulation
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11. Constitutional predisposition to vasovagal syncope: an additional risk factor in patients exposed to electrical injuries?
An hour after a 220 V electric shock a patient who was susceptible to mild vasovagal symptoms in response to emotional stress had a severe episode of cardiac arrest in response to insertion of a cannula. No myocardial damage or conduction abnormalities were detected by serial 12 lead electrocardiograms. Patients with a history of vasovagal reactions may be a
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12. Profound bradycardia after amyl nitrite in patients with a tendency to vasovagal episodes.
Two patients with mild aortic insufficiency inhaled amyl nitrite during routine echocardiographic examinations. One developed sinus arrest and syncope and the other had pronounced sinus bradycardia. The mechanism of this paradoxical response is unclear. Caution should be exercised when amyl nitrite is administered for diagnostic purposes.