Background: Renal congestion decreases glomerular filtration by increased renal interstitial
pressure. Method: contrast-enhanced ultrasonography (CEUS) was performed before and after treatment
of ultrafiltration in the case of 85-yo man with both-side heart failure. Each relative
contrast intensity (RCI) in cortex and medulla was calculated by subtracting the peak
contrast intensity of segmental artery from that in cortex and medulla. Time to peak
(TTP) of cortex and medulla were measured. Results: Urinary volume was significantly increased by ultrafiltration. Both RCI in the cortex
and medulla were increased after ultrafiltration (−12.3 to −8.04 dB; −22.8 to −15.8 dB,
respectively). TTP of cortex was shorted (16 to 11 sec), but that of medulla did not
changed (11 to 12 sec). Conclusion: CEUS revealed the change of renal perfusion in a case of renal congestion.
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