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  2. Cardiac conduction system - Wikipedia

    en.wikipedia.org/wiki/Cardiac_conduction_system

    The cardiac conduction system (CCS, also called the electrical conduction system of the heart) [1] transmits the signals generated by the sinoatrial node – the heart 's pacemaker, to cause the heart muscle to contract, and pump blood through the body's circulatory system. The pacemaking signal travels through the right atrium to the ...

  3. Cardiac action potential - Wikipedia

    en.wikipedia.org/wiki/Cardiac_action_potential

    In the heart's conduction system electrical activity that originates from the sinoatrial node (SAN) is propagated via the His-Purkinje network, the fastest conduction pathway within the heart. The electrical signal travels from the sinoatrial node, which stimulates the atria to contract, to the atrioventricular node (AVN), which slows down ...

  4. Electrocardiography - Wikipedia

    en.wikipedia.org/wiki/Electrocardiography

    003868. [edit on Wikidata] Use of real time monitoring of the heart in an intensive care unit in a German hospital (2015), the monitoring screen above the patient displaying an electrocardiogram and various values of parameters of the heart like heart rate and blood pressure. Electrocardiography is the process of producing an electrocardiogram ...

  5. Cardiac cycle - Wikipedia

    en.wikipedia.org/wiki/Cardiac_cycle

    In a healthy heart all activities and rests during each individual cardiac cycle, or heartbeat, are initiated and orchestrated by signals of the heart's electrical conduction system, which is the "wiring" of the heart that carries electrical impulses throughout the body of cardiomyocytes, the specialized muscle cells of the heart.

  6. What You Need to Know About Abnormal Heart Rhythm - AOL

    www.aol.com/know-abnormal-heart-rhythm-145227534...

    Atrial flutter occurs when the heart's electrical signals fire too fast, causing a rapid heart rate that can increase to over 300 BPM. The pattern can be regular or irregular. Ventricular Fibrillation

  7. Cardiac electrophysiology - Wikipedia

    en.wikipedia.org/wiki/Cardiac_electrophysiology

    Cardiac electrophysiology. Drawing of the ECG, with labels of intervals. Cardiac electrophysiology is a branch of cardiology and basic science focusing on the electrical activities of the heart. The term is usually used in clinical context, to describe studies of such phenomena by invasive (intracardiac) catheter recording of spontaneous ...

  8. Atrioventricular node - Wikipedia

    en.wikipedia.org/wiki/Atrioventricular_node

    The AV node is labelled 2. The atrioventricular node or AV node electrically connects the heart 's atria and ventricles to coordinate beating in the top of the heart; it is part of the electrical conduction system of the heart. [1] The AV node lies at the lower back section of the interatrial septum near the opening of the coronary sinus, and ...

  9. Sinoatrial node - Wikipedia

    en.wikipedia.org/wiki/Sinoatrial_node

    Sinus node dysfunction also known as sick sinus syndrome is a group of irregular heartbeat conditions caused by faulty electrical signals of the heart. When the heart's sinoatrial node is defective, the heart's rhythms become abnormal—typically too slow or exhibiting pauses in its function or a combination, and very rarely faster than normal ...