What is the priority nursing intervention when caring for a patient with bulimia nervosa who has a history of purging?
Correct Answer: B
Rationale: The correct answer is B because monitoring vital signs and electrolyte levels closely is crucial in managing a patient with bulimia nervosa who has a history of purging. Purging can lead to electrolyte imbalances and dehydration, which can have serious consequences such as cardiac arrhythmias and electrolyte disturbances. By closely monitoring vital signs and electrolyte levels, nurses can quickly identify and intervene in case of any abnormalities, preventing potential life-threatening complications.
Choice A is incorrect because emotional support and stress management are important but not the priority when dealing with physical complications from purging. Choice C is incorrect because encouraging exercise may exacerbate the patient's unhealthy behaviors and should be approached cautiously. Choice D is incorrect because identifying triggers is important but not as immediate as monitoring vital signs and electrolyte levels in this situation.