A 62-year-old woman presents to the wound care clinic for evaluation of a chronic ulcer above her right medial malleolus. She has a 6-month history of varicose veins, bilateral lower-extremity edema that improves with leg elevation, and hyperpigmentation of the skin around her ankles. On examination, pulses are 2+ bilaterally, capillary refill is <2 seconds, and Ankle–Brachial Index (ABI) is 1.0. The ulcer is 3 cm in diameter, shallow with granulation tissue, and shows no signs of acute infection. Which of the following is the most appropriate initial management strategy to promote healing of her venous ulcer?