A nurse is planning care for a client who has atrial fibrillation and reports heart palpitations, lightheadedness, and shortness of breath. Which of the following procedures should the nurse anticipate for this client?

Choice A rationale Pericardiocentesis is an emergency or therapeutic procedure involving the aspiration of fluid from the pericardial sac, typically performed to treat cardiac tamponade. A client with atrial fibrillation, palpitations, and lightheadedness is experiencing an electrical conduction problem rather than a mechanical compression issue caused by fluid accumulation. Therefore, inserting a needle into the pericardium would not address the rapid, irregular heart rhythm or the symptoms resulting from the loss of an effective atrial kick. Choice B rationale Septal myectomy is a surgical procedure used to treat hypertrophic obstructive cardiomyopathy by removing a portion of the thickened septal wall to improve blood flow out of the heart. While this surgery can help symptoms like shortness of breath in specific structural diseases, it is not the indicated treatment for a primary arrhythmia like atrial fibrillation. The client's symptoms are directly related to the uncontrolled heart rate and rhythm rather than an anatomical outflow obstruction. Choice C rationale A pericardial window is a surgical intervention where a small piece of the pericardium is removed to allow persistent pericardial effusions to drain into the pleural space. This procedure is indicated for chronic pericarditis or recurring effusions that compromise cardiac function. It does not treat atrial fibrillation or the associated symptoms of palpitations and lightheadedness, which are caused by rapid atrial impulses and disorganized ventricular responses rather than external pressure on the heart. Choice D rationale Synchronized electrical cardioversion is the preferred treatment for a client with atrial fibrillation who is symptomatic with lightheadedness and shortness of breath. This procedure delivers a timed electrical shock during the R wave of the QRS complex to depolarize the myocardium simultaneously, allowing the sinoatrial node to regain control of the rhythm. By restoring a normal sinus rhythm, the procedure improves cardiac output, eliminates palpitations, and resolves the hemodynamic instability caused by the arrhythmia.