Final answer:
The nurse should look directly at the patient when speaking, even when using an interpreter, to show respect and involve the patient in their care, while paying attention to nonverbal cues.
Step-by-step explanation:
The nurse is caring for a patient of Hispanic descent who speaks no English and is working with an interpreter. The most effective action the nurse should take is to look at the patient when talking. This is important because it shows respect, acknowledges the patient's presence, and involves them in their own care. Despite the language barrier, nonverbal communication such as eye contact is universally understood and can convey empathy and attention. In addition, the nurse should speak in clear, concise sentences and be attentive to the patient's nonverbal behaviors to gauge understanding and comfort level.