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Prognostic implications of normal or minimal urinary findings on long-term renal impairment in adults with Henoch-Schönlein purpura.
Journal of the American Academy of Dermatology ( IF 13.8 ) Pub Date : 2019-12-24 , DOI: 10.1016/j.jaad.2019.12.037
Emily Baumrin 1 , Soraya Azzawi 2 , Jessica St John 3 , Mai P Hoang 4 , Steven Chen 3 , Camden P Bay 5 , Daniela Kroshinsky 3
Affiliation  

BACKGROUND Renal involvement in adult Henoch-Schönlein purpura is a major cause of morbidity and can lead to significant long-term renal impairment. The prognostic significance of normal or minimal urinary abnormalities at diagnosis is unknown. OBJECTIVE To assess the risk of long-term renal impairment in patients with Henoch-Schönlein purpura who present with normal or minimal urinary abnormalities. METHODS Retrospective cohort study of adult Henoch-Schönlein purpura patients presenting with normal urinalysis results, microscopic hematuria, or low-grade proteinuria. Patients were followed for development of long-term renal impairment, with adjusting for comorbidities. RESULTS Forty-seven patients were included, with median follow-up 73.9 months (interquartile range 35 to 98 months). Thirty-nine patients (83.0%) had abnormal urinalysis results, of whom 15 (38.5%) progressed to long-term renal impairment. In contrast, 8 patients (17%) had normal urinalysis results, of whom only 1 (12.5%) developed long-term renal impairment (adjusted hazard ratio 10.58; 95% confidence interval 1.18-94.73). Renal events occurred at a median 36.1 months (interquartile range 17.1 to 61 months) from diagnosis, earlier in patients with comorbidities compared with those with none, and in a constant event rate over time. LIMITATIONS Small sample size. CONCLUSIONS Microscopic hematuria and low-grade proteinuria at Henoch-Schönlein purpura diagnosis is a poor prognostic sign for the development of long-term renal impairment. This population should be targeted for prolonged surveillance.

中文翻译:

正常或极少的尿液检查结果对患有Henoch-Schönlein紫癜的成年人的长期肾功能损害的预后影响。

背景技术成人成年性过敏性紫癜的肾脏受累是发病的主要原因,并可导致长期的严重肾脏损害。正常或最小尿异常在诊断时的预后意义尚不清楚。目的评估患有正常或最小尿异常的过敏性紫癜患者长期肾功能不全的风险。方法回顾性队列研究研究了正常尿液分析结果,镜下血尿或低度蛋白尿的成人过敏性紫癜患者。对患者进行长期肾功能不全的随访,并调整合并症。结果纳入了47例患者,中位随访时间为73.9个月(四分位间隔为35到98个月)。三十九名患者(83.0%)的尿检结果异常,其中15(38.5%)位病患发展为长期肾功能不全。相比之下,有8位患者(17%)的尿液分析结果正常,其中只有1位(12.5%)出现了长期肾功能不全(调整后的危险比10.58; 95%的置信区间1.18-94.73)。肾脏事件在诊断后的中位发生时间为36.1个月(四分位数范围为17.1至61个月),合并症患者与没有合并症的患者相比更早发生,并且随着时间的推移事件发生率恒定。局限性小样本量。结论微小血尿和低度蛋白尿在Henoch-Schönlein紫癜的诊断中是长期肾功能不全的不良预后标志。该人群应作为长期监测的目标。其中只有1名(12.5%)患了长期肾功能不全(调整后的危险比10.58; 95%的置信区间1.18-94.73)。肾脏事件在诊断后的中位发生时间为36.1个月(四分位数范围为17.1至61个月),合并症患者与没有合并症的患者相比更早发生,并且随着时间的推移事件发生率恒定。局限性小样本量。结论微小血尿和低度蛋白尿在Henoch-Schönlein紫癜的诊断中是长期肾功能不全的不良预后标志。该人群应作为长期监测的目标。其中只有1名(12.5%)患了长期肾功能不全(调整后的危险比10.58; 95%的置信区间1.18-94.73)。肾脏事件在诊断后的中位发生时间为36.1个月(四分位数范围为17.1至61个月),合并症患者与没有合并症的患者相比更早发生,并且随着时间的推移事件发生率保持恒定。局限性小样本量。结论微小血尿和低度蛋白尿在Henoch-Schönlein紫癜的诊断中是长期肾功能不全的不良预后标志。该人群应作为长期监测的目标。与没有合并症的患者相比,合并症患者更早,并且随着时间的推移事件发生率保持恒定。局限性小样本量。结论微小血尿和低度蛋白尿在Henoch-Schönlein紫癜的诊断中是长期肾功能不全的不良预后标志。该人群应作为长期监测的目标。与没有合并症的患者相比,合并症患者更早,并且随着时间的推移事件发生率保持恒定。局限性小样本量。结论微小血尿和低度蛋白尿在Henoch-Schönlein紫癜的诊断中是长期肾功能不全的不良预后标志。该人群应作为长期监测的目标。
更新日期:2019-12-24
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