2010, Number 3
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Rev Mex Med Repro 2010; 2.3 (3)
A comparative clinical study. Result of vitrification and devitrification of human embryos with two types of open systems: Cryotop vs Cryolock
Lazcano J, Maldonado I, López P, Dabbah J, Moreno D, Bermúdez A, Gaytán MJE
Language: Spanish
References: 19
Page: 79-83
PDF size: 70.29 Kb.
ABSTRACT
Background: Through the past years embryo vitrification has become a daily basis therapeutical assisted reproductive technique in many countries worldwide. We have worked with Cryotop open system device for several years, yielding survival rates above 90% and pregnancy rates of 60%. Now we introduced to our clinic the Cryolock open system device for embryo vitrification on day 3 or 5 of development.
Objectives: To compare the effectiveness of the new open system Cryolock with Cryotop, and to assess the survival and pregnancy rates after devitrification and transfer.
Material and method: A retrospective analysis of the procedures of defrosting and transferring (done in our clinic during 2009) was performed.
Results: We found that there is no significant difference between them, and furthermore, Cryolock device yields as well optimum survival and pregnancy rates: 90% and 60%, respectively. Thus, we recommended Cryolock device for embryo vitrification.
Conclusions: Although Cryotop presents a thinner filament compared to Cryolock, such a difference does not significantly affect survival and pregnancy rates when they are devitrified and transferred to patients. The use of Cryolock is recommended to embryo vitrification.
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