Accelerated idioventricular rhythm

Accelerated idioventricular rhythm

Infobox_Disease
Name = PAGENAME


Caption =
DiseasesDB =
ICD10 =
ICD9 =
ICDO =
OMIM =
MedlinePlus =
eMedicineSubj =
eMedicineTopic =
MeshID = D016170
The rate of cardiac contraction is determined by the intrinsic rate of depolarisation of the cardiac cells. In normal hearts the sinoatrial node in the atria depolarises at a rate of 70 beats per minute. This suppresses the intrinsic depolarisation of the other parts of the heart.

The accelerated idioventricular rhythm occurs when depolarisation rate of a normally suppressed focus increases to above that of the "higher order" focuses (the sinoatrial node and the atrioventricular node). This most commonly occurs in the setting of a sinus bradycardia. [http://www.emedicine.com/med/topic12.htm]

AIVR appears similar to ventricular tachycardia but is benign and doesn't need any treatment. It can most easily be distinguished from VT in that the rate is less than 120 and usually less than 100 bpm.

References

:1. http://www.emedicine.com/med/topic12.htm:2. Hampton, John (1997). The ECG Made Easy.


Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • accelerated idioventricular rhythm — a rapid ventricular rhythm, approximately 60 to 110 beats per minute; it usually results from premature beats or an escape rhythm generated by slowing of the sinus pacemaker or acceleration of a ventricular pacemaker …   Medical dictionary

  • idioventricular rhythm — a sustained series of impulses propagated by an independent pacemaker within the ventricles, with a rate of 20 to 50 beats per minute. See also accelerated idioventricular r …   Medical dictionary

  • idioventricular — Pertaining to or associated with the cardiac ventricles alone. * * * id·io·ven·tric·u·lar .id ē ə ven trik yə lər, vən adj of, relating to, associated with, or arising in the ventricles of the heart independently of the atria <apparent… …   Medical dictionary

  • idioventricular — adj. affecting or peculiar to the ventricles of the heart. The term is most often used to describe the very slow beat of the heart s ventricles under the influence of their own natural subsidiary pacemaker (idioventricular rhythm). An accelerated …   The new mediacal dictionary

  • AIVR — accelerated idioventricular rhythm …   Medical dictionary

  • AIVR — • accelerated idioventricular rhythm …   Dictionary of medical acronyms & abbreviations

  • AIVR — Accelerated Idioventricular Rhythm (Medical » Physiology) …   Abbreviations dictionary

  • Cardiac dysrhythmia — Arrhythmia redirects here. It is not to be confused with Erythema. Cardiac dysrhythmia Classification and external resources Ventricular fibrillation (V Fib or VF) an example of cardiac arrhythmia. ICD …   Wikipedia

  • Tachycardia — ECG showing sinus tachycardia with a rate of about 100 beats per minute. ICD 10 I47 I …   Wikipedia

  • Ventricular tachycardia — Classification and external resources ICD 10 I …   Wikipedia

Share the article and excerpts

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