Conducting System of the Heart - Bundle of His
2023年4月24日 · The cardiac conduction system is a collection of nodes and specialised conduction cells that initiate and co-ordinate contraction of the heart muscle. It consists of: Sinoatrial node; Atrioventricular node; Atrioventricular bundle (bundle of His) Purkinje fibres
Bundle of His - Wikipedia
The bundle of His is an important part of the electrical conduction system of the heart, as it transmits impulses from the atrioventricular node, located at the anterior-inferior end of the interatrial septum, to the ventricles of the heart.
Heart Conduction System (Cardiac Conduction) - Cleveland Clinic
The Purkinje fibers to your ventricles (bottom heart chambers), causing them to contract. These steps make up one full contraction of your heart muscle. Your heart conduction system sends out thousands of signals per day to keep your heart beating.
Function of the Heart's Electrical System - Cleveland Clinic
2022年3月17日 · The Bundle of His, bundle branches and Purkinje fibers are often described as the His-Purkinje system, which has a shape like an upside-down umbrella. The Bundle of His is the handle, the bundle branches are the stem and the Purkinje fibers are the umbrella's canopy.
Ventricular arrhythmias and the His–Purkinje system
2016年1月4日 · Ventricular arrhythmias are a major cause of sudden death, which accounts for approximately half of cardiac mortality. The His–Purkinje system is composed of specialized cells responsible for the...
Ventricular Arrhythmias Involving the His-Purkinje System in the ...
Perturbation of the His-Purkinje system can lead to life-threatening ventricular arrhythmias, including ventricular tachycardia (VT) or ventricular fibrillation (VF). These arrhythmias can be idiopathic, as reviewed recently, 1 or they can occur in the context of structural heart disease.
Physiology, Bundle of His - StatPearls - NCBI Bookshelf
2023年5月1日 · The Purkinje-type cells of the bundle of His are composed of randomly-oriented myofibrils, an abundance of mitochondria and Golgi apparatus, and a sporadic presence of two separate nuclei. The pacemaker (P) cells are oval in shape and contain “sparse and randomly oriented myofibrils,” simple membranes, and trivial amounts of sarcoplasmic ...
Modeling our understanding of the His-Purkinje system
The His-Purkinje System (HPS) is responsible for the rapid electric conduction in the ventricles. It relays electrical impulses from the atrioventricular node to the muscle cells and, thus, coordinates the contraction of ventricles in order to ensure proper cardiac pump function.
Management of Complex Reentrant Arrhythmias - His-Purkinje
2021年10月27日 · The His-Purkinje system is a complex network of conduction fibres located throughout the ventricles, composed of specialised conduction cells called Purkinje cells. Reentry is one of several mechanisms that result in ventricular arrhythmias involving the …
Human His-Purkinje System - Cardiac Electrophysiology Clinics
The His-Purkinje system (HPS) plays a significant role in human pathophysiology, but knowledge is scattered. This article highlights some of the relevant concepts, phenomena, and mechanisms; clarifies, expands, confirms, or modifies commonly encountered clinical events; and adds new information, which is often available but obscure.
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