Accelerated Idioventricular Rhythm

Accelerated Idioventricular Rhythm is difficult to establish an exact rate. limit with which to define Accelerated Idioventricular Rhythm in this species. the heart rate is less than 100 beats per minute (bpm), but some authors have used heart rate less than 120 bpm.Accelerated Idioventricular Rhythm is often, but not always, slightly faster than the underlying sinus rhythm; therefore, the ventricular rate takes over as the predominant rhythm. Accelerated idioventricular rhythm (AIVR) is a form of ectopic or automatic ventricular arrhythmia. This condition is characterized by a ventricular rate that is slower than traditionally defined ventricular tachycardia (VT). Generally, the heart rate is less than 100 beats per minute (bpm), but some authors have used heart rate less than 120 bpm. It is often, but not always, slightly faster than the underlying sinus rhythm; therefore, the ventricular rate takes over as the predominant rhythm. The occurrence of accelerated idioventricular rhythm (AIR) has been proposed to be a specific marker for successful reperfusion.

The rate was within 10 beats per minute of the preceding sinus rate in 11 patients. Echocardiograms were normal in 8 patients. Two patients had double-outlet right ventricles; 1 had repair of the tetralogy of Fallot; and 1 had abnormal ventricular septal motion. Seven patients were taking antiar rhythm ia medication without control of the AIVR at presentation.Accelerated Idioventricular Rhythm is an electrocardiographic diagnosis and does not generally produce any particular symptoms. Making a correct diagnosis remains one of the most important concerns because the usual treatments for patients with the more common form of ventricular arrhythmia, such as VT, may not apply.

Cause of Accelerated Idioventricular Rhythm

Some causes of Accelerated Idioventricular Rhythm:

• Possibly during resuscitation
• Drugs (eg, digoxin)
• Dilated cardiomyopathy
• Outpatient procedures (due to spinal anesthesia)

Treatment of Accelerated Idioventricular Rhythm

Some most common treatmet of Accelerated Idioventricular Rhythm:

• AV dissociation results in loss of sequential AV contraction and hemodynamic benefits of atrial contribution to ventricular filling.
• AIVR occurs with a more rapid VT.
• AIVR begins with a premature ventricular complex that has a short coupling interval and causes discharge in the vulnerable period of the preceding T wave.
• The ventricular rate is too rapid and produces symptoms.
• VT or fibrillation can develop from AIVR.
• This appears to be fairly rare. When indicated, therapy should be administered, as already noted, for patients with VT or ventricular fibrillation. Often, by simply increasing the sinus rate with atropine or atrial pacing, the AIVR suppresses.

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