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  • Title: Kidney-specific proteins in patients receiving aprotinin at high- and low-dose regimens during coronary artery bypass graft with cardiopulmonary bypass.
    Author: Faulí A, Gomar C, Campistol JM, Alvarez L, Manig AM, Matute P.
    Journal: Eur J Anaesthesiol; 2005 Sep; 22(9):666-71. PubMed ID: 16163912.
    Abstract:
    BACKGROUND AND OBJECTIVE: The aim was to determine whether the administration of aprotinin can cause deleterious effects on renal function in cardiac surgery with cardiopulmonary bypass (CPB). METHODS: Sixty consecutive patients with normal preoperative renal function undergoing elective coronary artery bypass surgery with CPB using the same anaesthetic; CPB and surgical protocols were randomized into three groups. Patients received placebo (Group 1), low-dose aprotinin (Group 2) or high-dose aprotinin (Group 3). Renal parameters measured were plasma creatinine, alpha1-microglobulin and beta-glucosaminidase (beta-NAG) excretion. Measurements were performed before surgery, during CPB and 24 and 72 h, and 7 and 40 days postoperatively. RESULTS: In the three groups, alpha1-microglobulin and beta-NAG excretions significantly increased during CPB, at 24 and 72 h, and 7 days postoperatively (P < 0.05) and had returned to preoperative levels at postoperative day 40. Plasma creatinine levels were within normal values at times recorded. In Groups 2 and 3, alpha1-microglobulin excretion during CPB was significantly higher than in Group 1 (P < 0.001), and 24h after surgery it still remained significantly higher in Group 3 compared to Groups 1 and 2 (P < 0.05). CONCLUSIONS: Aprotinin caused a significant increase in alpha1-microglobulin excretion but not in beta-NAG excretion during CPB, which may be interpreted as a greater renal tubular overload without tubular damage. This effect persisted for 24 h after surgery when high-dose aprotinin doses had been administered. Creatinine plasma levels were not sensitive to detect these prolonged renal effects in our study.
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