The ECG is a primary diagnostic tool in patients suffering from heart disease, underscoring
the importance of understanding factors contributing to normal and abnormal electrical …

Cardiac arrhythmias can follow disruption of the normal cellular electrophysiological
processes underlying excitable activity and their tissue propagation as coherent wavefronts …

Background Heart rate follows a diurnal variation, and slow heart rhythms occur primarily at
night. Objective The lower heart rate during sleep is assumed to be neural in origin, but here …

Background The central nervous origins of functional parasympathetic innervation of cardiac
ventricles remain controversial. Objective This study aimed to identify a population of vagal …

Maternal mortality rates are at an all-time high across the world and are set to increase in
subsequent years. Cardiovascular disease is the leading cause of death during pregnancy …

The electrocardiogram (ECG) reveals that heart chamber activation and repolarization are
much faster in mammals and birds compared to ectothermic vertebrates of similar size …

Aims Hypothyroidism is associated with an increased risk of cardiovascular disease and
enhanced susceptibility to arrhythmias. In our investigation, we evaluated the potential …

The QT interval reflects the time between the depolarization of ventricles until their
repolarization and is usually used as a predictive marker for the occurrence of arrhythmias …

Aims The cardiac natriuretic peptides [atrial natriuretic peptide (ANP) and B-type natriuretic
peptide (BNP)] are important regulators of cardiovascular physiology, with reduced …

Rhythmic feeding behavior is critical for regulating phase and amplitude in the≈ 24-h
variation of heart rate (RR intervals), ventricular repolarization (QT intervals), and core body …