…R bis wave" (R''). Any negative wave occurring after a positive wave is an S wave. Large waves are referred to by their capital letters…

ECG Video lecture: The QRS complex: Q wave, R wave & S wave

…ventricles, provided that the myocardium and conduction system have repolarized. This appears as a P wave and QRS complex occurring earlier than expected ( Figure 1 )…

…the ventricles it will spread partly or entirely outside of the conduction system and thus produce a wide QRS complex (QRS duration ≥0.12 s)…

…follows: NCT – Narrow complex tachycardias (QRS duration <0,12 seconds) indicate the ventricles are depolarized via the His Purkinje system and thus the impulse originates…

…of any deflection/wave is measured by using the PR segment as the baseline. Refer to Figure 1 . The QRS complex The QRS complex represents…

ECG Troponin is a protein complex expressed in cardiac and skeletal muscle. The complex consists of troponin I (TnI) , troponin C (TnC) and troponin T…

Cardiology Introduction Ventricular tachycardia (VT) represents a complex and potentially lethal spectrum of cardiac arrhythmias that remains a formidable challenge in contemporary cardiovascular medicine. As…

…A Tool for Revascularization Strategy in Complex Coronary Artery Disease The SYNTAX Score is a semi quantitative scoring system designed to assess the complexity of…

Cardiology Definition and terminology Heart failure (HF) is a complex clinical syndrome characterized by symptoms and signs resulting from structural or functional impairment of ventricular…