preexcitation

Premature activation of part of the ventricular myocardium by an impulse that travels by an anomalous path and so avoids physiologic delay in the atrioventricular junction; an intrinsic part of the Wolff-Parkinson-White syndrome.
- ventricular p. See Wolff-Parkinson-White syndrome.

* * *

pre·ex·ci·ta·tion -.ek-.sī-'tā-shən, -.ek-sə- n premature activation of part or all of the cardiac ventricle by an electrical impulse from the atrium that typically is conducted along an anomalous pathway (as muscle fibers on the heart surface) bypassing the atrioventricular node, that may produce arrhythmias, and that is characteristic of LGL syndrome and Wolff-Parkinson-White syndrome
pre·ex·cit·ed -ik-'sīt-əd adj

* * *

pre·ex·ci·ta·tion (pre-ek″si-taґshən) premature activation of a portion of the ventricles due to transmission of cardiac impulses along an accessory pathway not subject to the physiologic delay of the atrioventricular node. See also preexcitation syndrome, under syndrome. The term is sometimes used as a synonym for Wolff-Parkinson-White syndrome. Called also ventricular pacemaker

Medical dictionary. 2011.

Look at other dictionaries:

  • préexcitation — ● préexcitation nom féminin Anomalie au niveau des voies de conduction intracardiaques, entraînant dans certaines conditions un cheminement beaucoup plus rapide de l influx nerveux et pouvant passer inaperçue ou entraîner des crises de… …   Encyclopédie Universelle

  • preexcitation — n. * * * …   Universalium

  • preexcitation — pre ex•ci•ta′tion n …   From formal English to slang

  • preexcitation — n …   Useful english dictionary

  • preexcitation syndrome — any syndrome characterized by electrocardiographic evidence of preexcitation, such as Wolff Parkinson White syndrome or Lown Ganong Levine syndrome; sometimes used as a synonym of the former …   Medical dictionary

  • Wolff-Parkinson-White syndrome — A condition caused by an abnormality in the electrical system of the heart which normally tells the heart muscle when to contract. In Wolff Parkinson White (WPW) syndrome, there is an extra electrical connection inside the heart that acts as a… …   Medical dictionary

  • Ebstein's anomaly — Infobox Disease Name = PAGENAME Caption = DiseasesDB = 4039 ICD10 = ICD10|Q|22|5|q|20 ICD9 = ICD9|746.2 ICDO = OMIM = 224700 MedlinePlus = eMedicineSubj = med eMedicineTopic = 627 MeshID = D004437 Ebstein s anomaly is a congenital heart defect in …   Wikipedia

  • syndrome — The aggregate of symptoms and signs associated with any morbid process, and constituting together the picture of the disease. SEE ALSO: disease. [G. s., a running together, tumultuous concourse; (in med.) a concurrence of symptoms, fr. syn,… …   Medical dictionary

  • List of diseases (V) — A list of diseases in the English wikipedia.DiseasesTOC VaVac Van* Vaccinophobia * VACTERL association with hydrocephaly, X linked * VACTERL association * VACTERL hydrocephaly * Vacuolar myopathy * Vagabond s disease * Vagina absence of *… …   Wikipedia

  • Mahaim fibers — are portions of the electrical conduction system of the heart which connect to the interventricular septum[1], though there is some disagreement about their exact insertion.[2] They can be associated with forms of pre excitation syndrome.[3]… …   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.