Macro reentrant atrial tachycardia
International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01
An atrial arrhythmia in which there is intra-atrial reentry or circus movement around a fixed or functional central obstacle. The central obstacle may consist of normal (e.g. valves) or abnormal (e.g. scar) structures. This form of SVT originates in the atrium; conduction to the ventricles is not necessary for the tachycardia to continue. An organised atrial rhythm with a rate typically between 250 and 350 bpm, including tachycardias using a variety of reentry circuits that often occupy large areas of the atrium ("macro-reentrant"). Here the arrhythmia involves the cavotricuspid isthmus.
sections/codes in this section (BC81.2-BC81.2)
- Cavotricuspid isthmus dependent macroreentry tachycardia (BC81.20)
- Non-scar, non-isthmus dependent macro reentrant atrial tachycardia (BC81.21)
- Scar mediated macro reentrant atrial tachycardia (BC81.22)
- Other specified macro reentrant atrial tachycardia (BC81.2Y)
- Macro reentrant atrial tachycardia, unspecified (BC81.2Z)
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