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我们观察无并发症早产儿55例,出生<3天与>3天的两组比较,前者血尿素氮(BUN),血肌酐(SCr)明显增高,BUN>7.14mmol/L(20mg)占42.3%,SCr全部<132.6μmol/L(1.5mg);肾小球滤过率(GFR)明显低下(33.90±14.85ml/min/1.73m~2,生后一周以上各值达相对稳定水平。随胎龄增大,BUN、SCr随之减少,GFR相应增大。胎龄<35周的早产儿肾功能更不成熟。体重>2.0公斤的早产儿肾功能已达较好水平。排钠分数(FENa)和肾衰指数(RFI)在胎龄较小的早产儿可超过肾性肾衰水平。
We observed 55 cases of preterm infants without complications, and the BUN and SCr levels of the two groups were significantly higher at <3 days and> 3 days of birth, with BUN> 7.14mmol / L (20mg) accounting for 42.3% % And SCr were all less than 132.6μmol / L (1.5mg). Glomerular filtration rate (GFR) was significantly lower (33.90 ± 14.85ml / min / 1.73m ~ 2) The gestational age increased, BUN and SCr decreased, and the GFR increased correspondingly.The premature infants with gestational age <35 weeks had more immature renal function, and the renal function of premature infants> 2.0 kg had reached a good level FENa) and renal failure index (RFI) in children with gestational age may exceed the level of renal failure.