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Success Rates

Results of blastocyst transfers Jan 2007 to Dec 2009

 

3 years data showing results following transfer of blastocysts
Age < 35yrs 35-37 yrs 38-39 yrs 40-42 yrs 43 + yrs Recipients of donated eggs
Blastocyst transfers 238 109 42 41 9 88
All pregnancies (% of transfers) 141 (59%) 71 (65%) 27 (64%) 22 (54%) 4 (44%) 54 (61%)

Births or ongoing pregnancies

(% of transfers)

49% 44% 36% 24% 22% 47%
% twins 33% 35% 32% 23% 0 30%

 

1) Although pregnancy rates are high across all age groups when blastocysts are transferred, the rate of pregnancy loss is higher as women become older

2) The risk of a twin pregnancy can be reduced by only transferring one good quality blastocyst


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