The aim of the present study was to evaluate the effects of IV lidocaine on autonomic cardiac function changes in tracheal intubation (TI) during sevoflurane anaesthesia by using more reliable parameters, namely, the analysis of QT dispersion and heart rate variability (HRV) from Holter monitoring. In this prospective, double-blind study, 44 American Society of Anaesthesiologists class I-II pat...

In a letter to Bertrand Russell, Wittgenstein complained that the British philosopher did not understand the main message of the Tractatus. He explained that “the main point is the theory of what can be expressed by propositions—i.e., by language . . . and what cannot be expressed by propositions, but only shown; which, I believe, is the cardinal problem of philosophy” (qtd. in Stern 69–70). Th...

INTRODUCTION Diagnosis of Brugada syndrome (BS) currently requires documentation of a characteristic repolarization pattern (type 1 Brugada ECG). Mutations in the SCN5A gene, which codes for sodium channel Na(v) 1.5, are found in 38% of familial cases of BS. Sodium current dysfunction negatively affects the cardiac fast response action potential, particularly in atrial and ventricular myocytes ...

Background Epilepsy is one of the most common neurological diseases. Over the last decades the hypothesis of cardiovascular effects from sudden seizure has been raised, and cardiac rhythm and ECG changes in these patients have been highlighted. The study aimed to evalua...

Recent studies showed contradictive results of the relation between QT dispersion and the occurrence of ventricular tachyarrhythmias and/or sudden cardiac death. In addition, beta adrenoreceptors blocking agents, which are known to decrease the incidence of lethal arrhythmias after myocardial infarction, administered to the majority of patients in those studies population. Since -blocker as se...

Diabetes mellitus is a risk factor of cardiovascular diseases. ECG of patients with diabetes mellitus type 1 (DM 1) shows tachycardia (block of parasympathetic innervation) and abnormal repolarization (increased QT interval and QT dispersion (QTd)) indicating a risk of ventricular tachycardia and sudden death in young people with DM 1. The aim of the present report was to measure 145 parameters...

Background: QT duration represents the time of whole summated electric cardiac ventricular activity involving stepwise depolarization followed by repolarization. There has been a long history using surface electrocardiogram (ECG) to identify repolarization problems. The 1960s were turning point for precise mathematical methodologies. It customary in clinical practice use only interval and polar...

The acute change in pulmonary artery pressure in response to oxygen may have prognostic value for patients with chronic obstructive pulmonary disease treated with long term domiciliary oxygen. A study was carried out to elucidate the mechanism of the acute cardio-respiratory response to oxygen in such patients and to determine whether it can be quantified non-invasively. The effects of acute ox...

Objective: Cardiovascular changes are related to some of epilepsy disorders such as seizures and breath holding. The study objective was evaluate ECG findings in breath-holding febrile convulsion compared healthy individuals. Methodology: This Cross-sectional conducted on 270 children 90 with convulsion, patients 2019. Electrocardiography parameters of; QT interval, dispersion QT, corrected QTc...

Various QT interval variables and heart rate variability parameters were studied in six patients with ventricular fibrillation but without heart disease and compared with findings in 21 normal persons. QT and QT dispersion (QTd) were measured from conventional 12 lead ECGs: for dynamic QT analysis, QT intervals were automatically measured to the end of the T wave (QTe) on a 24 h ECG recording. ...