2.Refractory hypertension caused by renal artery fibromuscular dysplasia in one child
Naiqing CHEN ; Huijie XIAO ; Fang WANG
Journal of Clinical Pediatrics 2019;37(1):51-54
Objective To explore the clinical characteristics, diagnosis and treatment of refractory hypertension caused by renal artery fibromuscular dysplasia (FMD) in children. Method The clinical data of a child with refractory hypertension caused by FMD were retrospectively analyzed. Results A boy, with onset at age of 4 years, had significantly increased blood pressure and decreased serum potassium. His renin and angiotensin levels were significantly elevated. The boy was diagnosed with renovascular hypertension by color Doppler ultrasonography, enhanced thoracoabdominal CT and vascular reconstruction. Oral administration of a variety of antihypertensive drugs is not effective. The child was finally diagnosed of refractory hypertension caused by FMD using renal angiography. The child was not suitable for surgery. After adjusting the antihypertensive drugs, the blood pressure of the child tended to be stable. The boy received continuous follow-up for 8 years. The antihypertensive regimen was adjusted annually and blood pressure fluctuations and target organ damage were dynamically assessed. Conclusion Children with FMD caused renal vascular hypertension may have no specific manifestations in the early stage. The drug treatment is preferred, and surgical treatment may be considered.
3.Large sample follow-up of single centre and assessment of pediatric urolithiasis caused by melamine-contaminated milk powder
Xinyu KUANG ; Jian GAO ; Hong XU ; Longhai JIAN ; Wenyan HUANG ; Naiqing ZHAO ; Jia RAO ; Qiangying QIAN ; Xianying CHENG ; Zhimin FENG ; Jing XU ; Xin ZHANG ; Xiang WANG ; Shuangsui RUAN ; Li SUN ; Qian SHEN ; Qi CAO ; Xiaoyan FANG ; Lijun ZHOU ; Sujuan WANG ; Xiaoling GE ; Libo WANG
Chinese Journal of Nephrology 2010;26(12):887-891
Objective To assess the prognosis and effect on renal function of pediatric urolithiasis caused by melamine-contaminated milk powder (PUMMP) in a long-term follow-up.Methods One hundred and two of 8335 children (≤ 6-year-old) with history of consuming melamine-contaminated milk powder screened in our hospital were followed up for eighteen months after diagnosis. Urinary system ultrasonography, urinalysis, urinary microprotein profiles [microalbumin (ALBU), immunoglobulin G (IgG), and N-acetyl-β-D-glucosidase (NAG)], urinary melamine and cyanuric acid were examined in the first visit and at the end of follow-up. Results Follow-up was completed in 91 children and the stone was excreted in 82 children (90.1%).Stones less than 5 mm in diameter were most vulnerable to discharge, and stones larger than 10 mm could not be expelled without interventions. At the end of follow-up, no melamine or cyanuric acid was found in the urine samples of 74 patients. Urinalysis showed that incidences of proteinuria, microscopic hematuria and leukocyturia were 0%, 5.1% and 2.0%, which were significant different from those in the first visit (Pproteinutria=0.123, Phemnatuna=0.038 and Pleukocyhuris=0.005).Urinary microprotein profiles revealed that some children whose urinalysis was normal still presented glomerular and renal tubular injury and the abnormal rates were 8.8% and 12.1%respectively. The glomerular injury was mainly related to persistent stone, male and younger.Conclusions 90.1% of children with PUMMP passes urinary stones at the end of follow-up.Stone size is the major risk factor of discharge. No melamine or cyanuric acid is found in the urine of children. After eighteen months, glomerular and renal tubular injury is still found in some patients. Further follow-up is necessary.