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Comparison of electroretinograms between preterm and full-term infants
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF OCULAR FUNDUS DISEASES
- Issue:
- 5
- DOI:
- 10.3760/j.issn:1005-1015.2005.05.005
- Key Word:
- 视网膜/生长和发育;视网膜病;早产儿/诊断;视网膜电描记术
Abstract： 目的了解早产儿视网膜功能发育程度. 方法选取健康无眼病早产儿和足月产婴儿各25例进行闪光视网膜电图(ERG)检测,记录视杆细胞反应、视锥细胞反应及最大混合反应.对比分析两组婴儿的ERG各波反应的潜伏期、振幅以及最大反应b/a波振幅比值. 结果与足月产婴儿比较,早产儿视杆细胞反应潜伏期延长(t=11.007,P=0.000),差异具有统计学意义,而振幅没有明显改变(t=1.836,P=0.069);最大反应a、b波潜伏期延长(t=2.44,P=0.010;t=10.800,P=0.000),而振幅降低(t=5.804,P=0.000;t=5.809,P=0.000),差异具有统计学意义.两组婴儿视锥细胞反应除b波振幅无明显差异外(t=0.486,P=0.628),a波潜伏期(t=4.444,P=0.000)和振幅(t=3.819,P=0.000)及b波潜伏期(t=2.850,P=0.005)差异具有统计学意义.两组间最大混合反应的b/a波振幅比值没有明显差异(t=1.142,P=0.256). 结论早产儿视网膜发育程度较足月产婴儿稍低.
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