Accelerated Idioventricular Rhythm Workup

Updated: Aug 22, 2022
  • Author: Nayereh G Pezeshkian, MD; Chief Editor: Jeffrey N Rottman, MD  more...
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Laboratory Studies

Blood tests

Obtain levels of troponin, CK and CK-MB for the diagnosis of myocardial infraction.

Obtain BUN and creatinine measurements to assess renal function in patients with suspected digoxin toxicity.

Other laboratory tests

Obtain levels of digoxin and electrolytes.


Imaging Studies

Obtain echocardiography to evaluate structural heart diseases.

Nuclear perfusion scanning is used to evaluate myocardial ischemia.

Coronary angiography is used to evaluate coronary artery patency.


Other Tests

Electrocardiography is the most important method for the diagnosis of accelerated idioventricular rhythm (AIVR); AIVR can be distinguished from complete heart block on ECG. [27] Although both show AV dissociation, in complete heart block, P waves are present preceding the QRS complex, but fail to conduct to the ventricle.

Telemetry monitoring, Holter study, event recorder, and loop recorder are often the electrocardiographic modalities from which AIVR diagnosis is established.