Cardiovascular
Pathophysiology
Ventricular tachycardia (VT) ranges from stable monomorphic rhythms to pulseless arrest. Ventricular fibrillation (VF) is a perfusionless rhythm requiring defibrillation. Torsades de pointes is polymorphic VT in the setting of QT prolongation and may respond to magnesium while correcting triggers (electrolytes, drug toxicity). Nursing roles centre on early recognition, defibrillator readiness, CPR quality, and post-resuscitation monitoring.
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