The nurse is planning care for a group of clients during the night shift on a medical unit. Which client should be assessed regularly during the night for sleep apnea?

Young adult client with chronic insomnia and atrial fibrillation being treated with warfarin.

A client with restless leg syndrome and chronic obstructive pulmonary disease (COPD).

An older adult client with multiple problems, including obesity, diabetes, and hypertension.

A client who has a bleeding ulcer, high stress job, and takes flurazepam for sleep.