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Wide QRS complex tachycardia
AACN Clinical Issues in Critical Care Nursing
|February 1, 1992
Summary
Critical care nurses face challenges in identifying wide QRS complex tachycardias. Procainamide is a key treatment for these dysrhythmias, but definitive diagnosis requires invasive studies.
Area of Science:
- Critical care nursing
- Cardiology
- Electrophysiology
Background:
- Electrocardiographic monitoring for dysrhythmias is crucial for critical care nurses.
- Wide QRS complex tachycardias pose diagnostic and therapeutic challenges.
- Differentiating ventricular from supraventricular origins relies on specific electrocardiographic criteria.
Purpose of the Study:
- To highlight the challenges in diagnosing wide QRS complex tachycardias.
- To emphasize the importance of understanding treatment protocols for hemodynamic stability.
- To discuss the role of procainamide in managing these dysrhythmias.
Main Methods:
- Review of established criteria for differentiating impulse origins (QRS duration, morphology, axis, AV dissociation).
- Discussion of the limitations of non-invasive criteria.
- Emphasis on the necessity of invasive electrophysiologic studies for definitive diagnosis.
Main Results:
- Established criteria aid in differentiating impulse origins but are not always definitive.
- Invasive electrophysiologic studies remain the gold standard for diagnosis.
- Procainamide demonstrates efficacy in treating both ventricular and supraventricular tachycardias.
Conclusions:
- Accurate diagnosis of wide QRS complex tachycardias is essential for appropriate treatment.
- Knowledge of treatment protocols, including the use of procainamide, is vital for critical care nurses.
- Definitive diagnosis often necessitates invasive electrophysiologic assessment.