An advanced practice nurse is caring for a 78-year-old male with end-stage COPD who is non-verbal. The patient appears restless, with a respiratory rate of 28, use of accessory muscles, and a distressed facial expression. Which of the following is the most appropriate tool to assess this patient's dyspnea?
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A
Numeric Rating Scale (NRS)
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B
Edmonton Symptom Assessment System (ESAS-r)
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C
Respiratory Distress Observation Scale (RDOS)
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D
Borg Scale