Minimal ovarian stimulation is an alternative to conventional protocols for older women according to Poseidon's stratification: a retrospective multicenter cohort study.
J Assist Reprod Genet
; 38(7): 1799-1807, 2021 Jul.
Article
in En
| MEDLINE
| ID: mdl-33851314
ABSTRACT
OBJECTIVE:
To investigate whether minimal ovarian stimulation (mOS) is as effective as conventional ovarian stimulation (cOS) for older women belonging to different groups according to the Poseidon criteria. MATERIAL ANDMETHODS:
Observational retrospective multicentre cohort including women from Poseidon's groups 2 and 4 that underwent in vitro fertilization (IVF). We performed a mixed-effects logistic regression model, adding as a random effect the patients and the stimulation cycle considering the dependence of data. Survival curves were employed as a measure of the cumulative live birth rate (CLBR). The primary outcomes were live birth rate per embryo transfer and CLBR per consecutive embryo transfer and oocyte consumed until a live birth was achieved.RESULTS:
A total of 2002 patients underwent 3056 embryo transfers (mOS = 497 and cOS = 2559). The live birth rates per embryo transfer in mOS and cOS showed no significant difference in both Poseidon's groups. Likewise, the logistic regression showed similar live birth rates between the two protocols in Poseidon's groups 2 (OR 1.165, 95% CI 0.77-1.77; p = 0.710) and 4 (OR 1.264 95% CI 0.59-2.70; p = 0.387). However, the survival curves showed higher CLBR per oocyte in women that received mOS (Poseidon group 2 p < 0.001 and Poseidon group 4 p = 0.039).CONCLUSIONS:
Minimal ovarian stimulation is a good alternative to COS as a first-line treatment for patients belonging to Poseidon's groups 2 and 4. The number of oocytes needed to achieve a live birth seems inferior in mOS strategy than cOS.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Ovulation Induction
/
Birth Rate
Type of study:
Etiology_studies
/
Guideline
/
Observational_studies
/
Prognostic_studies
Limits:
Adult
/
Female
/
Humans
/
Pregnancy
Language:
En
Journal:
J Assist Reprod Genet
Year:
2021
Document type:
Article