نتایج جستجو برای: qt
تعداد نتایج: 15699 فیلتر نتایج به سال:
INTRODUCTION It was aimed to calculate QT intervals in patients with acromegaly and to reveal its correlation between QT intervals, and growth hormone and insulin like growth factor-1. MATERIAL AND METHODS Forty-one patients with acromegaly were enrolled into the study. Another 41 individuals with similar features, such as comorbid diseases, age and sex constituted the control group. The elec...
Background: Long QT syndrome (LQTS) is a disorder in which electrical cardiac ventricular repolarization is impaired. It results in an increased risk of an irregular heartbeat which can result in palpitations, fainting, drowning, or sudden death. Long QT Syndrome may present as tonic-clonic seizure or a seizure-like disorder. By taking a superficial electrocardiogram (ECG) and proper diagnosis,...
AIM To reassess QT interval rate correction. BACKGROUND The QT interval is strongly and inversely related to heart rate. To compare QT intervals between different subjects with different heart rates requires the application of a QT interval rate correction formula. To date these formulae have inappropriately assumed a fixed relation between QT interval and heart rate. An alternative method of...
sudden, unexpected death may occur in apparently healthy individuals. its occurrence in psychiatric patients has raised the concern that the use of psychotropics, especially antipsychotics, may be associated with an increased risk of sudden death. this concern is maintained even though not all psychiatric patients who have succumbed to sudden death have been on psychotropics. early reports pres...
Abstract Background: Considering the increasing incidence of acute coronary syndrome (ACS) without diagnostic ECG change and importance of diagnostic markers including QT dispersion in ACS, we aimed to determine the relationship between QT dispersion and CK-MB in patients who referred to Taleghani Hospital in year 1391. Materials and methods: This cross-sectional study was concluded on patients...
Background: Long QT syndromes (LQT) are genetic abnormalities of ventricular repo-larization, with an estimated incidence of about one per 10000 births. It is characterized by prolongation of the QT interval in electrocardiogram (EKG) and associated with a high risk for syncope and sudden death in patients. Type of this syndrome is association with congenital deafness. Our objective was to eval...
Introduction: QT dispersion in a 12 lead ECG represents the heterogeneity of ventricular repolarization. The prolongation of QT-interval dispersion increases the risk of coronary heart disease, ventricular arrhythmia, and sudden cardiac death in patients with myocardial infarction. We aimed to investigate the prognostic value of QT-dispersion in patients with acute myocardial infarction. Meth...
We study the homogeneous Dirichlet problem for degenerate parabolic equationut?div(|?u|p(x,t)?2?u)=f(x,t) in QT=?×(0,T), where ??RN, N?2, is a bounded domain with boundary ???C2. The variable exponent p(x,t) given Lipschitz-continuous function, p(x,t):QT?[p?,p+] some constants 2NN+2<p??p+<?. derive conditions on f and u0 sufficient existence of unique strong solution following global regularity...
torsades de pointes is a rare but potentially lethal arrhythmia which mainly occurs in the setting of a prolonged qt interval. ecg is a reliable tool to detect such abnormalities, routinely taken from all patients over 40 who undergo surgery. we describe the case of a 35-year-old woman with torsades de points arrhythmia after hysterectomy surgery. most likely, our patients had long qt syndrome ...
زمینه و هدف : در جریان سکته مغزی تغییراتی در برخی از متغیرهای پاراکلینیکی نظیر تغییرات الکتروکاردیوگرام روی می دهد که ممکن است از ارزش تشخیصی و یا پیش آگهی برخوردار باشند. این مطالعه به منظور ارزیابی ارزش پیش آگهی طولانی شدن قطعه qt در بیماران مبتلا به سکته مغزی ایسکمیک حاد انجام شد. روش بررسی : این مطالعه توصیفی روی 175 بیمار (73 مرد و 102 زن) مبتلا به سکته مغزی ایسکمیک حاد بستری در بیمارستان ...
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