Extended Results: Blastocyst Transfers

Blastocyst Transfers: January - December 2008
IVF FET ICSI Total
Number of patients opting for blastocyst transfer 207 90 207 504
Number of patients getting to blastocyst transfer 102 73 76 251
Number of patients opting for an earlier transfer* 80 13 102 195
Number of patients not achieving transfer 25 4 29 58
Total transfers 182 86 178 446
Number of patients with a positive pregnancy test 83 44 86 213
Number of clinical pregnancies 74 32 72 178
Clinical pregnancies for blastocyst transfer 47 28 40 115
Pregnancy rate per blastocyst transfer (%) 46.1 38.4 52.6 45.8
Clinical pregnancies for earlier transfer patients* 27 4 32 63
Pregnancy rate per transfer for earlier transfer patients* (%) 33.8 30.8 31.4 32.3
* if it appears that the embryos may not develop to the blastocyst stage, the embryologist may recommend an earlier transfer


Fetal Hearts at Pregnancy Scan from Blastocyst Transfers: January - December 2008
  Elective single blastocyst transfer Only single blastocyst available  Two blastocyst transfers Total
Number of transfers 34 18 199 251
Number of clinical pregnancies 12 4 99 115
Pregnancy rate per blastocyst transfer % 35.3 22.2 49.7 45.8
Number of clinical pregnancies with 1 fetal heart 11 (91.7%) 4 (100%) 59 (59.6%) 74 (64.3%)
Number of clinical pregnancies with 2 fetal hearts 1 (8.3%)   39 (39.4%) 40 (34.8%)
Number of clinical pregnancies with 3 fetal hearts     1 (1%) 1 (0.9%)
brackets show the percentage from the total number of clinical pregnancies    


Blastocyst Transfers: January 2006 - December 2007
IVF FET ICSI Total
Number of patients opting for blastocyst transfer 181 93 188 462
Number of patients getting to blastocyst transfer 78 78 94 250
Number of patients opting for an earlier transfer* 79 13 69 161
Number of patients not achieving transfer 24 2 25 51
Total transfers 157 91 163 411
Number of patients with a positive pregnancy test 81 55 79 215
Number of clinical pregnancies 65 46 68 179
Clinical pregnancies for blastocyst transfer 35 41 48 124
Pregnancy rate per blastocyst transfer (%) 44.9 52.6 51.1 49.6
Clinical pregnancies for earlier transfer patients* 30 5 20 55
Pregnancy rate per transfer for earlier transfer patients* (%) 38.0 38.5 29.0 34.2
Number of Livebirths for blastocyst transfer 30 39 43 112
Livebirth rate per blastocyst transfer (%) 38.5 50.0 45.7 44.8
Number of livebirths for earlier transfer patients 25 5 16 46
Livebirth rate for earlier transfer patients (%) 31.6 38.5 23.2 28.6
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