A nurse is caring for a client who suddenly develops atrial fibrillation with a ventricular rate of 150 beats per minute. The nurse should assess the client for which of the following priority signs and symptoms associated with this dysrhythmia?

Choice A reason: Nausea and vomiting can occur in cardiac conditions due to reduced perfusion to the gastrointestinal system. However, in atrial fibrillation with a rapid ventricular rate, the priority is assessing for symptoms of reduced cardiac output, such as hypotension and dizziness, which are more immediate and life-threatening. Choice B reason: Hypertension and headache are not typical of rapid atrial fibrillation, which usually causes reduced cardiac output due to ineffective atrial contractions. These symptoms are more associated with hypertensive crises or other conditions, making them less relevant for this dysrhythmia. Choice C reason: Flattened neck veins suggest hypovolemia or low venous pressure, not typical in acute atrial fibrillation, where jugular vein distension may occur due to heart failure. Hypotension and dizziness are more direct indicators of compromised cardiac output in this scenario. Choice D reason: Rapid atrial fibrillation impairs atrial filling, reducing cardiac output and causing hypotension. Dizziness results from decreased cerebral perfusion due to low blood pressure. These are critical symptoms to assess, as they indicate hemodynamic instability, requiring immediate intervention to prevent further complications.