Lack of Unna Boot Training Leads to Ischemic Foot Ulcer and Amputation
Summary
The facility failed to ensure that nurses and nurse aides had appropriate education and competencies for the application and monitoring of Unna boots, resulting in improper use of this compression dressing for a resident. The resident had a BIMS score of 14, indicating no cognitive impairment, and medical diagnoses including PVD, type 2 DM with diabetic neuropathy, and a history of PAD with revascularization. The resident was care planned as being at risk for skin breakdown related to advanced age, fragile skin, and DM. A physician ordered bilateral Unna boots to be applied to the lower extremities twice weekly in response to increased edema, soreness, and redness. Treatment records show that Unna boots were applied and changed by a nurse on specified dates, and skin checks prior to application did not document any wound on the right foot. Subsequently, the resident was transferred to the ED for tachycardia and chest pain and reported increasing leg pain after Unna boots had been applied the previous day, denying any prior ulcers, blisters, or redness on the right foot before their use. In the ED, removal of the bilateral Unna boots revealed a large, very painful wound on the right dorsal foot. Hospital physician documentation indicated that the resident appeared to have had an Unna boot that was too tight, causing a pressure injury, and the hospital discharge summary stated that tight Unna boots placed by the skilled nursing facility resulted in a large necrotic ulcer on the right dorsal foot that was likely ischemic in nature. Surgical debridement was performed, and the resident was later transferred for management of the ischemic ulcer and likely osteomyelitis, with subsequent below-the-knee amputation and a planned above-the-knee amputation before the resident’s death. The facility’s medical director reported being notified by the hospital that the Unna boot was applied incorrectly, and review of facility training records confirmed there was no Unna boot or wound care training or competency documentation for the nurses involved, including the nurse who applied the Unna boots.
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