Abstract
The technique for assisting renal blood circulation may be a useful therapeutic method in acute cardiorenal syndrome (ACRS), because renal ischemic dysfunction due to the reduced renal blood circulation is a powerful negative prognostic factor in ACRS. We constructed a circuit assisting renal arterial pressure and flow, and performed renal-selective blood perfusion (RSP) to the left kidney in a goat model of ACRS induced by right ventricular rapid pacing (n = 8), with the right kidney left intact as an internal control. Upon induction of ACRS, renal arterial flow (RAF), creatinine clearance (CCr), and renal oxygen consumption (RVO2) of the left kidney decreased to 49, 48, and 63% of the respective baseline values accompanied by a significant increase in renal vascular resistance (RVR), and similar results were observed in the right kidney. Then, RSP improved RVR and increased left RAF, CCr, and RVO2 up to 91, 86, and 93% of baseline values, respectively, without a significant change in systemic hemodynamics. The RSP-treated kidney showed significantly higher CCr and urinary excretion of water and sodium compared to the contralateral kidney. Additional infusion of prostaglandin E1 with RSP decreased RVR further and enabled the left RAF to increase up to 129% of the baseline value, without a significant change in systemic hemodynamic parameters. The CCr and RVO2 did not change significantly, and urinary excretion of water and sodium showed a tendency to increase. These findings suggest that the technique for assisting renal blood circulation for both kidneys may offer a new treatment strategy for patients with ACRS.
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Hanada, S., Takewa, Y., Mizuno, T. et al. Effect of the technique for assisting renal blood circulation on ischemic kidney in acute cardiorenal syndrome. J Artif Organs 15, 140–145 (2012). https://doi.org/10.1007/s10047-011-0613-5
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DOI: https://doi.org/10.1007/s10047-011-0613-5