ladder diagram


ladder diagram
a diagrammatic representation of the routes of cardiac conduction as determined by electrocardiographic recording, used in diagnosing arrhythmias. Vectors describing the origins and paths of individual normal or ectopic impulses as well as points of blocks to conduction are drawn across a series of horizontal lines representing the atria, atrioventricular node, ventricles, and sometimes additional regions of the conduction system. See illustration. Called also laddergram.

Ladder diagrams depicting different electrocardiographic (ECG) patterns. (1), Normal beat; (2), first degree atrioventricular block; (3), atrial premature complex, with an inverted P wave on the ECG; (4), ectopic impulse arising in the His bundle and conducting anterograde to the ventricle and retrograde through the AV node to the atrium; (5), ventricular ectopic beat conducting retrograde through the His bundle and AV node to the atrium. A star marks the point of origin of each premature or ectopic impulse. AV, atrioventricular.


Medical dictionary. 2011.

Look at other dictionaries:

  • Ladder diagram — may refer to: * Message Sequence Chart, in Unified Modeling Language (UML) * Ladder logic, a method of drawing electrical logic schematics. A ladder diagram represents a program in ladder logic …   Wikipedia

  • Ladder Diagram — (англ. LD, англ. LAD, рус. РКС) язык релейной (лестничной) логики. Применяются также названия: язык релейно контактной логики (РКС) релейные диаграммы релейно контактные схемы язык программирования релейно лестничной логики стандарта… …   Википедия

  • Ladder Diagram — Langage Ladder Pour les articles homonymes, voir LD et Ladder. Sommaire 1 Origine 2 Principe …   Wikipédia en Français

  • Ladder diagram — Langage Ladder Pour les articles homonymes, voir LD et Ladder. Sommaire 1 Origine 2 Principe …   Wikipédia en Français

  • ladder diagram — Electrical diagram that indicates order of electrical devices in a specific electrical circuit …   Dictionary of automotive terms

  • Ladder logic — is a philosophy of drawing electrical logic schematics. It is now a graphical language very popular for programming Programmable Logic Controllers (PLCs). It was originally invented to describe logic made from relays. The name is based on the… …   Wikipedia

  • Ladder (homonymie) — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Dans le domaine du jeu vidéo, un ladder est un un tournoi étalé sur une période plus ou moins longue. Voir aussi Article connexe Ladder diagram Catégorie …   Wikipédia en Français

  • Ladder paradox — The ladder paradox (or barn pole paradox) is a thought experiment in special relativity. If a ladder travels horizontally it will undergo a length contraction and will therefore fit into a garage that is shorter than the ladder s length at rest.… …   Wikipedia

  • Langage Ladder — Pour les articles homonymes, voir LD et Ladder. Sommaire 1 Origine 2 Principe 3 …   Wikipédia en Français

  • Cosmic distance ladder — * Light green boxes: Technique applicable to star forming galaxies. * Light blue boxes: Technique applicable to Population II galaxies. * Light Purple boxes: Geometric distance technique. * Light Red box: The planetary nebula luminosity function… …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.