A 64-year-old woman has a foot ulcer. Medical History: Three months ago she had a cerebrovascular accident and now has residual hemiparesis with contractures. Her other medical problems include hypertension, diabetes, hypercholesterolemia, coronary artery disease and mild dementia. Physical examination: Body temperature 37.2 C, Bp 142/63 mm Hg, Pulse 62/min, No new neurological deficits.
Skin examination shows ulceration on left foot with mild erythema. Which of the following is the primary cause of patient’s skin ulcer? Arterial insufficiency Bacterial infection Poor glucose control Pressure necrosis Venous insufficiency
