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Effect of renal Doppler ultrasound on the detection of nutcracker syndrome in children presenting orthostatic proteinuria

Authors
 Eun Jae Hwang  ;  Ji Hong Kim  ;  Mi-Jung Lee  ;  Haesung Yoon  ;  Jae Il Shin  ;  Keum Hwa Lee 
Citation
 Childhood Kidney Diseases, Vol.28(2) : 74-79, 2024-06 
Journal Title
Childhood Kidney Diseases
ISSN
 2384-0250 
Issue Date
2024-06
Keywords
Proteinuria ; Renal nutcracker syndrome ; Ultrasonography, Doppler
Abstract
Purpose: To compare the Doppler sonographic findings of the left renal vein (LRV) of children diagnosed with nutcracker syndrome with and without orthostatic proteinuria. Methods: Fifty and 53 consecutive children with and without orthostatic proteinuria, respectively, underwent renal Doppler ultrasonography examinations. The peak velocity (PV) was measured at the hilar portion of the LRV and between the aorta and superior mesenteric artery. Renal Doppler ultrasonography findings and clinical data including urine protein-to-creatinine ratio (UPCR) were compared according to the presence or absence of orthostatic proteinuria. Results: Between the two groups, no significant differences were observed in terms of age or sex. The PV ratio between the aortomesenteric and hilar portions was 7.79±2.65 and 6.32±3.01 in children with and without orthostatic proteinuria, respectively (P=0.009). No significant differences were observed between the two groups in terms of the UPCR in the first morning urine sample. However, the UPCR in the afternoon urine sample was significantly higher in children with orthostatic proteinuria than in those without orthostatic proteinuria (0.49±0.46 mg/mg vs. 0.11±0.04 mg/mg, P<0.001). Furthermore, the PV ratio between the aortomesenteric and hilar portions revealed a positive correlation with the ratio of UPCR of the afternoon to that of first morning urine samples (R=0.21, P=0.034). Conclusions: This study suggests that there can be a significant correlation of the PV ratio between the aortomesenteric and hilar portion of the LRV with orthostatic proteinuria in pediatric patients with nutcracker syndrome. © 2024 Korean Society of Pediatric Nephrology.
DOI
10.3339/ckd.24.009
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Pediatrics (소아과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Ji Hong(김지홍) ORCID logo https://orcid.org/0000-0001-5352-5423
Shin, Jae Il(신재일) ORCID logo https://orcid.org/0000-0003-2326-1820
Yoon, Haesung(윤혜성) ORCID logo https://orcid.org/0000-0003-0581-8656
Lee, Keum Hwa(이금화) ORCID logo https://orcid.org/0000-0002-1511-9587
Lee, Mi-Jung(이미정) ORCID logo https://orcid.org/0000-0003-3244-9171
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/200755
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