雷射輔助ICSI,打薄ZP70%再ICSI, 可能可減少卵子受損率, 提高胚胎囊胚率, 著床率

Clin Exp Reprod Med. 2011 Sep;38(3):148-52. doi: 10.5653/cerm.2011.38.3.148. Epub 2011 Sep 30.

Efficiency of laser-assisted intracytoplasmic sperm injection in a human assisted reproductive techniques program.

Choi KH1, Lee JH, Yang YH, Yoon TK, Lee DR, Lee WS.

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Abstract

OBJECTIVE:

Laser-assisted intracytoplasmic sperm injection (LA-ICSI), also known as micro-opening or thinning of the zona pellucida (ZP) prior to ICSI, may help to reduce mechanical damage to the oocyte during the procedure. The aim of the present study was to evaluate and analyze the efficacy of our institutional LA-ICSI program, which features laser-assisted ZP thinning prior to ICSI, in comparison with conventional ICSI (C-ICSI), performed on patients with different clinical characteristics.

METHODS:

Patients undergoing a total of 212 ICSI cycles were randomly divided into an LA-ICSI group (106 cycles) and a conventional ICSI group (106 cycles). To reduce tissue damage, we thinned the ZP by approximately 70%, using a laser, before ICSI. Patients thus treated formed the LA-ICSI group. Comparisons included the morphological quality of transferred embryos, blastocyst development of the remaining embryos, and clinical pregnancy, in terms of ICSI method and patient characteristics.

RESULTS:

Fertilization, development of remaining embryos, and pregnancy rate were significantly higher in the LA-ICSI group compared with the C-ICSI group. Fertilization, embryonic development, and the pregnancy rate were all improved in younger patients (<38 years of age) and in those who underwent a low number of IVF-ET attempts (<3 trials). In addition, the pregnancy rate was increased in older patients.

CONCLUSION:

LA-ICSI may be useful in improving the chance of pregnancy in all ICSI patients.