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ventricular arhythmia

Ebru Yalın İmamoğlu, Ayşe Güler Eroğlu
AIM: To investigate ventricular arrhythmias in children with primary mitral valve prolapse and to evaluate its relation with QT length, QT dispersion, autonomic function tests and heart rate variability measurements. MATERIAL AND METHODS: Fourty two children with mitral valve prolapse and 32 healthy children were enrolled into the study. Twelve-lead electrocardiograms, autonomic function tests, echocardiography and 24-hour rhythm Holter tests were performed. Electrocardiograms were magnified digitally...
September 2016: Türk Pediatri Arşivi
Grzegorz Gajos, Izabela Pietrzak, Andrzej Gackowski, Agnieszka Okraska, Marcin Misztal, Wiesława Piwowarska
AIM: The purpose of the study was to assess selected parameters of myocardial depolarization and repolarization, as well as other SCD risk factors before and after coronary angioplasty (PCI), especially in patients (pts) with increased risk of SCD. METHODS: 50 consecutive pts undergoing successful coronary angioplasty (39 men, 11 women, mean age 54 +/- 9.9 yrs) were included. Before PCI and 19.6 +/- 4.3 days after the procedure parameters of signal averaged ECG, QTd, heart rate variability--HRV, late potentials--LP and ejection fraction (LVEF) were assessed...
September 2004: Kardiologia Polska
Behnaz Ghoraani, Sridhar Krishnan, Raja J Selvaraj, Vijay S Chauhan
T wave alternans (TWA) has been associated with ventricular arrhythmias. Hence, TWA detection can risk stratify patients with heart disease who may experience sudden death from ventricular arhythmias. However, accurate TWA detection is technically challenging due to the low microvolt TWA signal and the confounding effect of biological noise such as movement, myopotentials or respiration. In this paper, we propose nonnegative matrix factorization (NMF)-Adaptive spectral method to increase the robustness of TWA detection in ambulatory electrocardiograms (ECGs)...
2009: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Sharma, Sarma, Singh
BACKGROUND: The effects of sotalol on the 24-hour profile of the QT interval relative to that of the heart rate (HR) may be helpful in determining the time course of the drug's action in controlling cardiac arhythmias. This has not been previously determined. Thus, the objective of the current study was to evaluate the influence of the drug on the circadian rhythmicity of HR and QT intervals from Holter recordings in ambulatory patients. Reverse-use dependency (RUD) of sotalol was also studied noninvasively from Holter recordings...
January 1999: Journal of Cardiovascular Pharmacology and Therapeutics
M J Metrass, D Brito, A P de Lacerda, B B da Costa, F de Pádua, H Madeira
UNLABELLED: Prospective study to evaluate the influence of 2 different iodine contrasts (used in coronariography) on the electrocardiographic changes recorded after intra-coronary injection. MATERIAL AND METHODS: Sixty-six patients (pts) - 50 men and 16 women - 59 +/- 4 years underwent coronariography to confirm and/or evaluate coronary artery disease (CAD). Group I (33 pts) received a hyperosmolar contrast; group II received a low osmolarity contrast. The electrocardiograms were recorded during and until 20 seconds after intra-coronary injection, in standard leads and V5...
September 1996: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
B Vujisić-Tesić, N Simin, M Petrović, Z Vasiljević, M Grujić, A Karacić
Lyme disease is an infectious, multisystem disease involving the skin, heart, joints, and nervous system. With its ability to assess cardiac anatomy, chamber sizes and myocardial and valvular function, echocardiography is a powerful noninvasive tool to investigate possible cardiac involvement in this disorder. We studied by echocardiography 15 patients, (6 women and 9 men, mean age 28.5 years, range 17 to 42) with clinical and electrocardiographic changes compatible with acute myocarditis or myopericarditis...
1993: Glas
A Ulmann, L Silvestre
RU486 (mifepristone) followed by a prostaglandin (PG) analogue has been marketed in France since April 1990 as a medical alternative to surgery for early pregnancy termination. By law, the drug is used only in the centres approved for voluntary pregnancy termination, and its distribution is strictly controlled. Before being marketed, it was distributed to more than 20,000 women, as part of a training programme for the prescribers. Analysis confirmed an efficacy rate of 95.3%. Failures included incomplete ovular expulsion (2...
June 1994: Human Reproduction
P Chella, S Gramenzi, E Magagnini
No abstract text is available yet for this article.
1980: Bollettino Della Società Italiana di Cardiologia
R Gentile, P Gallo, B Laganà, F Vaccaro
The causes of acute myocarditis include infections (viral, bacterial, protozoal), toxins, drugs, hypersensitivity, chemical and physical agents. One of the most interesting and not completely understood of these conditions is the viral myocarditis. This diagnosis is often invoked to explain non-specific chest pain in the absence of coronary artery disease, spontaneous onset of arhythmias associated or not to congestive heart failure of unidentified origin. In most instances, there is little evidence that myocarditis is the underlying pathology...
July 1989: Medicina: Revista Della Enciclopedia Medica Italiana
R Hatala
This review summarizes selected topics discussed at one of the major congress events in cardiovascular medicine in Great Britain in 1989. The congress was attended during its five days duration by 800 participants from nearly 40 countries. The scientific programme, consisting of invited state-of-art lectures, was divided into following basic topics: coronary heart disease including risk and prevention, arhythmias, hypertension, heart failure, structural heart disease, cardiac imaging and costs-effectiveness of cardiology...
February 1990: Bratislavské Lekárske Listy
J Siedlecki
The author recorded arterial blood pressure by direct method and ECG in 94 patients during laryngoscopy and intubation. A rise of the mean arterial blood pressure was observed from 104 to 153 mm Hg together with the appearance of ventricular premature beats in patients with normal arterial blood pressure and without arhythmia before the procedure. Superficial analgesia of the pharynx, larynx and trachea failed to prevent the rise of arterial pressure during intubation. The procedure of superficial analgesia connected with intubation caused also a rise in the arterial blood pressure and arrhythmia...
April 1975: Anaesthesia, Resuscitation, and Intensive Therapy
C B Higgins, W R Roeske, J S Karliner, R O'Rourke, R N Berk
The incidence of significant arrhythmias and ST segment changes during barium enema examination (BE) was evaluated by Holter monitoring of 58 unselected patients over the age of 60 years. Forty percent of the group developed new significant arrhythmias of which the most common were frequent and/or multifocal premature ventricular contractions. Seven percent demonstrated ST segment depression. Administration of glucagon did not diminish the incidence of arrhythmias. Predictive factors for ECG abnormalities were advancing age, abnormal pre-BE-ECG, and pre-BE orthostatic hypotension...
December 1976: British Journal of Radiology
H S Friedman, Q Zaman
A case of persistent repetitive supraventricular tachycardia known to be present for at least 9 yr is reported. Although the patient appeared to tolerate the arrhythmia without any ill effects he was found to have moderate left ventricular dysfunction due to alcoholic abuse and/or significant coronary artery disease. The electrophysiological findings appear to be most consistent with an ectopic focus arising in the low right atrium as the mechanism for this arrhythmia. Although resistant to standard drug therapy, this arhythmia did respond to overdrive suppression...
July 1977: European Journal of Cardiology
K Hashimoto, T Tsukada, H Matsuda, I Matsubara, S Imai
Antiarrhythmic effects of oxprenolol, a beta-blocker, were studied quantitatively on arhythmias produced by epinephrine during halothane anesthesia and by two-stage coronary ligation, and were compared to those of other beta-blockers, propranolol and Kö 1400, which have been already reported. Though oxprenolol has potent beta-blocking activity, the antiarrhythmic effect on halothane-epinephrine arrhythmia was significantly weaker than those of propranolol and Kö 1400. The effective dose of oxprenolol was 60 +/- 18 microgram/kg (mean +/- S...
August 1978: Japanese Journal of Pharmacology
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