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Heart rate is not always the same as pulse. Heart rate is a measurement of electrical activity while pulse ensures the perfusion of the blood Read More

Also known as PEA, is the paradoxical combination of an organized rhythm without a palpable pulse; note that rapid ventricular tachycardia, ventricular fibrillation and asystole Read More

A matrix of fibres located throughout the myocardium that connects the impulse from the bundle branches to the myocardial tissue. The bundle branches and the Read More

A Q wave is the first negative deflection of the QRS complex that is not preceded by a R wave. A normal Q wave is Read More

The electrical representation of ventricular depolarization; the atrial repolarization is also a part of the QRS. ECG interpretation relies heavily on the QRS complex. The Read More

The QT interval represents a complete ventricular cycle of depolarization and repolarization. The QT interval is measured from the beginning of the QRS complex to Read More

An opportunity to practice or challenge a knowledge set. We use quiz, test, exam interchangeably. Read More

Following the depolarization of the interventricular septum, ventricular depolarization then progresses from the endocardium through to the epicardium across both ventricles producing an R wave Read More

The phenomenon of R wave progression utilizes the following six leads: V1, V2, V3, V4, V5, V6. The chest leads provide information on the sagittal Read More

Heart Rate; calculated by counting the number of QRS complexes in six seconds and multiplying by 10; rate is also determined by measuring the number Read More