Objective: To report on the incidence and risk factors associated with the development of ischemic skin lesions (ISL) in critically ill patients with catecholamine-resistant vasodilatory shock treated with a continuous infusion of arginine-vasopressin (AVP).
Design: Retrospective analysis.
Setting: Twelve-bed general and surgical intensive care unit in a university hospital.
Patients: A total of 63 critically ill patients with catecholamine-resistant vasodilatory shock.
Interventions: Continuous AVP infusion.
Measurements And Main Results: Demographic, hemodynamic, laboratory data, and skin status were evaluated 24 hrs before and during AVP therapy (24 and 48 hrs). Patients were grouped according to development of new ISL during AVP therapy. A mixed-effects model was used to compare groups. A multiple logistic regression analysis was used to identify independent risk factors for the development of ISL. ISL developed in 19 of 63 patients (30.2%). Thirteen of 19 patients (68%) developed ISL in distal limbs, two patients (10.5%) developed ISL of the trunk, four patients (21%) developed ISL in distal limbs and in the trunk. Five patients (26%) had additional ischemia of the tongue. Body mass index, preexistent peripheral arterial occlusive disease, presence of septic shock, and norepinephrine requirements were significantly higher in patients developing ISL. ISL patients received significantly more units of fresh frozen plasma and thrombocyte concentrates than patients without ISL. Preexistent peripheral arterial occlusive disease and presence of septic shock were independently associated with the development of ISL during AVP therapy.
Conclusions: ISLs are a common complication during continuous AVP infusion in patients with catecholamine-resistant vasodilatory shock. The presence of septic shock and a history of peripheral arterial occlusive disease are independent risk factors for the development of ISL.
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