The nurse on the telemetry unit receives prescriptions for three clients based on the results of their electrocardiogram (ECG) and updates the clients' plans of care. For which client will the nurse update the care plan to include the prescription for a permanent pacemaker?

Management of cardiac conduction abnormalities often involves identifying bradyarrhythmias that impair cardiac output and may require permanent pacing. The Permanent pacemaker is indicated for clients with symptomatic bradycardia or conduction system failure, where the heart rate is too slow to maintain adequate perfusion. ECG interpretation helps determine rhythm origin, rate, and conduction integrity. Severe sinus bradycardia or advanced conduction delays are common indications for pacemaker therapy. Rationale: A. This rhythm represents a normal sinus rhythm with an occasional skipped beat, likely a premature beat such as a premature ventricular contraction (PVC) or sinus pause. These are often benign and do not typically require permanent pacing unless associated with significant symptoms or underlying conduction disease. Occasional irregularities alone are not sufficient to indicate pacemaker placement. B. This description suggests atrial fibrillation, characterized by absence of identifiable P waves and irregular atrial activity. Atrial fibrillation can cause hemodynamic instability, but it is usually managed with rate control, rhythm control, and anticoagulation rather than pacemaker insertion. A pacemaker is not first-line treatment unless there is associated bradycardia from therapy or conduction disease. C. This rhythm shows a normal sinus rhythm with 12 QRS complexes in 6 seconds, corresponding to a heart rate of approximately 120 beats per minute, indicating sinus tachycardia. Tachyarrhythmias do not require pacemaker therapy; instead, treatment focuses on identifying underlying causes such as pain, hypovolemia, or anxiety. Pacemakers are used for slow rhythms, not fast ones. D. This rhythm shows only 4 QRS complexes in 6 seconds, corresponding to a heart rate of approximately 40 beats per minute, indicating significant sinus bradycardia. Despite normal conduction (P-QRS-T sequence), the rate is too slow to maintain adequate cardiac output. This level of bradycardia, especially if symptomatic, is a common indication for permanent pacemaker placement to maintain an adequate heart rate and perfusion.