…Study Figure 7 carefully, as it illustrates how the P wave and QRS complex are generated by the electrical vectors. Note that the first vector…

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

…the impulse to each respective ventricle) the QRS complex is normal (i.e QRS duration <0.12 s). However, the QRS complex can be wide…

Arrhythmias and arrhythmology ECG Premature ventricular contractions (premature ventricular complex, premature ventricular beats): ECG and clinical implications Premature ventricular complexes are also referred to as…

…narrow and wide complex tachycardia All clinically significant supraventricular and ventricular tachyarrhythmias have been reviewed in previous sections. However, given that each arrhythmia has been…

…interpretation requires a structured assessment of the waves and intervals. Before discussing each component in detail, a brief overview of the waves and intervals is…

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…

[calc_syntax] SYNTAX Score: A Tool for Revascularization Strategy in Complex Coronary Artery Disease The SYNTAX Score is a semi quantitative scoring system designed to…

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…