University:
West Coast University
Course:
NURS 110 | Introduction to Professional Nursing
Academic year:

2021
Views:

479

Pages:

1
Author:

apallirasbnc4

Accelerated Idioventricular (AIVR) Rate: 40-100bpm Rhythm: Irregular QRS: Wide—If the QRS is wider than 0.16 seconds and with a T-wave the opposite direction of the QRS complex; the impulse is most generally ventricular PRI: P waves absent or retrograde conduction Characteristics: Accelerated idioventricular rhythm (AIVR) is a relatively benign form of ventricular tachycardia. It often occurs during reperfusion after a myocardial infarction. It has a frequency of 60-120 bpm, mostly 80-100. AIVR used to be a good sign, as it made clear that reperfusion was succeeded (especially after thrombolysis, where the success cannot easily be determined without angiography). However, recently debate has started whether among patients with successful coronary intervention, AIVR is a sign of ventricular dysfunction and therefore a slightly worse prognosis. Causes: Myocardial Infarction, Pacemaker Failure, Metabolic imbalance, Myoardial Ischemia Nursing Priorities: Asses patient, measures to improve cardiac output and establish a normal rhythm and rate Potential Treatments: Atropine 0.25-1 mg is sometimes used to accelerate underlying sinus rate to inhibit IVR. Isopreterenol, verapamil, and antiarrhythmia drugs such as lidocaine and amiodarone are occasionally used for IVR. Pacing. Caution: Suppressing the ventricular rhythm is contraindicated because that rhythm protects the heart from complete standstill.