Prolonged cardiac repolarization causes fatal cardiac arrhythmias. There is evidence that these contribute to sudden death associated with nocturnal hypoglycemia in young people with diabetes. We measured cardiac repolarization (QT interval [QTc] and QT dispersion [QTd]) during experimental hypoglycemia with and without beta-blockade and potassium infusion to establish possible mechanisms. Two ...

OBJECTIVE The aim of this study was to investigate QT dispersion (QTd), which is the noninvasive marker of ventricular arrhythmia and sudden cardiac death, and P-wave dispersion, which is the noninvasive marker of atrial arrhythmia, in patients with conversion disorder (CD). PATIENTS AND METHODS A total of 60 patients with no known organic disease who were admitted to outpatient emergency cli...

SUMMARY OBJECTIVE: COVID-19 can cause lung damage and may present with pneumonia in patients. In the study, correlation between severity of electrocardiography parameters were examined. METHODS: A total 93 patients a control group consisting 62 volunteers studied. Computed thorax tomography evaluation was performed; each divided into three zones. For affected zone, scores given. The main comput...

We read the article entitled ‘‘The effect of esmolol on corrected-QT interval, corrected-QT interval dispersion changes seen during anesthesia induction in hypertensive patients taking an angiotensin-converting enzyme inhibitor’’ by Ceker et al. with interest.1 The authors investigated the effects of esmolol on the hemodynamic, correctedQT (QTc) interval and corrected-QT interval dispersion (QT...