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Abstract
Introduction: To study the functional and hystological alterations in dog kidneys submitted to total ischemia for thirty minutes and the possible metoprolol protective action. Material and methods: Sixteen dogs anesthetized with sodium pentobarbital (SP) were studied and divided into two groups: G1–8 dogs submitted to left nephrectomy and right renal artery clamping for thirty minutes, and G2–8 dogs submitted to the same procedures of G1 and to the administration of 0.5 mg.kg−1 metoprolol before ischemia. Attributes of renal function were studied. Results: There was acute tubular necrosis and a decrease ofrenal blood flow and glomerular filtration, and a increase of renal vascular resistance in both groups. Conclusion: The thirty minute renal ischemia appears to have determined the alterations found in the renal function and hystology in both groups. Metoprolol, used in G2, as to the time and dose applied didn't protect the kidney from the ischemic episode.