Renal vein thrombosis in neonates: a case series of diagnosis, treatment and childhood kidney function follow-up.
Pediatr Nephrol
; 38(9): 3055-3063, 2023 09.
Article
em En
| MEDLINE
| ID: mdl-36988695
ABSTRACT
BACKGROUND:
Neonatal renal vein thrombosis (NRVT) is a rare condition with little data available.METHODS:
We retrospectively analyzed newborns diagnosed with NRVT admitted to 3 pediatric nephrology units in Paris from 2005 to 2020.RESULTS:
Twenty-seven patients were analyzed (male = 59%). The median age at diagnosis was 2.5 days (1 - 4.5). Diagnosis was suspected based on at least one of the three cardinal signs of renal vein thrombosis in 93% flank mass (67%), hematuria (67%) and thrombocytopenia (70%). In all patients, diagnosis was confirmed by ultrasound. All patients had at least one known perinatal risk factor. A prothrombotic risk factor was found in 13 patients (48%). NRVT was unilateral in 70%, involving the left renal vein in 58%. Among 25 treated patients, 19 (76%) received low molecular weight heparin (LMWH) as initial therapy, 2 (8%) received unfractionated heparin and 4 (16%) received fibrinolysis. Median duration of treatment was 8 weeks (4 - 12). Bleeding occurred significantly more often with fibrinolysis than with LMWH/supportive therapy (3 of 4 75% vs 0 of 4 0%, p = 0.05). Clot resolution in patients treated with fibrinolysis did not differ significantly from those treated with LMWH/supportive therapy. After a median follow-up of 5.7 years (3 years - 9.9 years), pathological kidney features were observed in 73% of the patients (19 of 26), kidney atrophy in 18 (69%), hypertension in 2 (8%), chronic kidney disease (CKD) in 1 (4%) and proteinuria in 2 (8%).CONCLUSIONS:
NRVT remains a challenging condition, which still requires further study because of its associated morbidity. A higher resolution version of the Graphical abstract is available as Supplementary information.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Trombose
/
Trombose Venosa
/
Nefropatias
Tipo de estudo:
Diagnostic_studies
/
Etiology_studies
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Observational_studies
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Prognostic_studies
/
Risk_factors_studies
Limite:
Child
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Humans
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Male
/
Newborn
Idioma:
En
Revista:
Pediatr Nephrol
Assunto da revista:
NEFROLOGIA
/
PEDIATRIA
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
França