[EN] Background: The QT interval is a phase of the cardiac cycle that corresponds to action potential duration (APD) including cellular repolarization (T-wave). In both clinical and experimental settings, prolongation of ...
[EN] In healthy mammalian hearts the action potential (AP) waveform initiates and modulates each contraction, or heartbeat. As a result, AP height and duration are key physiological variables. In addition, rate-dependent ...
[EN] Potassium levels in the plasma, [Kþ]o, are regulated precisely under physiological conditions. However, increases (from approx. 4.5 to
8.0 mM) can occur as a consequence of, e.g., endurance exercise, ischemic insult ...