Latest posts
-
Cardiac Physiology Part 2: QRS Complex and Excitation-Contraction Coupling
Once the AV nodal delay concludes, the electrical impulse is unleashed into the rapid ventricular conduction system. The High-Voltage QRS ComplexThe impulse travels down the Bundle of His, divides into the right and left bundle branches, and spreads through the Purkinje fiber network into the ventricular myocardium. Because the ventricular muscle mass is substantially larger…
-
Cardiac Physiology Part 1: SA Node to PR Interval – How the Heart’s Electrical Command Begins
In advanced cardiovascular physiology, the electrocardiogram (ECG) and mechanical hemodynamics are frequently treated as separate clinical domains. This separation creates diagnostic blind spots. The cardiac cycle is not a sequence of isolated electrical waveforms followed by passive mechanical events; it is a continuous, tightly coupled process of electromechanical translation. To master acute care hemodynamics and…