In this study, we measured the effects of spinal anesthesia on the corrected QT (QTc) interval in women with severe preeclampsia. Twenty-five preeclamptic (preeclamptic group) and 25 healthy pregnant women with normal arterial blood pressure and QTc interval (control group) were enrolled in this prospective, case-controlled study. Arterial blood pressure, heart rate, and QTc interval values wer...

OBJECTIVES In order to more clearly understand the electrocardiographic manifestations of early transmural ischemia, we studied electrocardiograms (ECGs) in patients undergoing balloon angioplasty. BACKGROUND Decisions regarding reperfusion strategies in patients with acute myocardial infarction rely largely on the presence of ST-segment elevation (STE) in the ECG, consequently with significa...

AIM To assess the relationship between corrected QT (QTc) interval and vitamin 25-hydroxyvitamin D levels (25-OHD) deficiency in type 2 diabetic patients. METHODS The study included 253 patients with type 2 diabetes and 170 age-matched controls treated between October and December 2013. QTc duration and QTc dispersion were measured on ECG recordings and 25-OHD, calcium, phosphorus, and blood ...

Objectives: To evaluate whether reduced heart rate variability (HRV), prolonged QTc interval, or increased QT dispersion (QTD) are predictors of mortality in the general diabetic and nondiabetic population. Research Design and Methods: Nondiabetic (n=1560) and diabetic (n=160) subjects aged 55-74 years were assessed to determine whether reduced HRV, prolonged QTc interval, and increased QTD may...

Long QT syndrome (LQTS) is an inherited cardiac disease characterized by a prolonged heart rate-corrected QT (QTc) interval. We investigated the genetic causes in patients with prolonged QTc intervals who were negative for pathogenic variants in three major LQTS-related genes (KCNQ1, KCNH2, and SCN5A). Molecular genetic testing was performed using a panel including 13 LQTS-related genes and 67 ...

OBJECTIVES To evaluate whether reduced heart rate variability (HRV), prolonged corrected QT (QTc) interval, or increased QT dispersion (QTD) are predictors of mortality in the general diabetic and nondiabetic population. RESEARCH DESIGN AND METHODS Nondiabetic (n = 1,560) and diabetic (n = 160) subjects aged 55-74 years were assessed to determine whether reduced HRV, prolonged QTc interval, a...

Objectives: The aim of this study was to evaluate the prevalence and the risk factors of prolonged QTc interval among Egyptian patients with type 2 diabetes. Patients and methods: We enrolled in this cross-sectional study from June 2011 to December 2015, a total of 220 patients (108 male & 112 female) with mean age 50.42± 7.453years diagnosed with type 2 DM. Results: In this study, we found (33...

BACKGROUND Aim of the study was to assess QTc interval by a 24-hour ECG recording in a group of HIV-infected individuals with a basal prolonged QTc. The risk factors associated with QTc prolongation and the indices of cardiovascular autonomic control were also evaluated. METHODS A case-control study was performed using as cases 32 HIV-infected patients with prolonged (>440 msec) QTc interval ...

BACKGROUND It is thought that the autonomic nervous system modulates QT interval, but traditional autonomic blockade combining propranolol and atropine has produced conflicting results. We used the alternative approach of interrupting neurotransmission at the level of autonomic ganglia to determine its effect on the QT interval. METHODS AND RESULTS We infused trimethaphan at increasing doses ...

BACKGROUND AND AIM We investigated the effect of adrenaline on desflurane-induced prolonged corrected QT (QTc) interval. PATIENTS AND METHODS Sixty-two adult patients scheduled for nasal surgery were included. Following intubation, packs soaked in physiological saline were used for Group C (control) and packs soaked in adrenaline (1/200,000, 5 ml) were used for Groups A1 and A2. Group A2 was ...