The impact of timing modified natural cycle frozen embryo transfer based on spontaneous luteinizing hormone surge.
J Assist Reprod Genet
; 38(1): 219-225, 2021 Jan.
Article
en En
| MEDLINE
| ID: mdl-33230616
ABSTRACT
PURPOSE:
To evaluate whether adjusting timing of modified natural cycle frozen embryo transfer (mNC-FET) 1 day earlier in the setting of a spontaneous LH surge has an impact on pregnancy outcomes.METHODS:
This retrospective cohort study evaluated all mNC-FET with euploid blastocysts from May 1, 2016 to March 30, 2019, at a single academic institution. Standard protocol for mNC-FET included ultrasound monitoring and hCG trigger when the dominant follicle and endometrial lining were appropriately developed. Patients had serum LH, estradiol, and progesterone checked on day of trigger. If LH was ≥ 20 mIU/mL, trigger was given that day and FET was performed 6 days after surge (LH/HCG+6), with the intent of transferring 5 days after ovulation. If LH was < 20 mIU/mL, FET was performed 7 days after trigger (hCG+7). Primary outcomes included clinical pregnancy and live birth rates. To account for correlation between cycles, a generalized estimating equation (GEE) method for multivariable logistic regression was used.RESULTS:
Four hundred fifty-three mNC-FET cycles met inclusion criteria, of which 205 were in the LH/HCG+6 group and 248 were in the HCG+7 group. The overall clinical pregnancy rate was 64% and clinical miscarriage rate was 4.8%, with similar rates between the two groups. The overall live birth rate was 60.9% (61.0% in LH/HCG+6 group and 60.9% in HCG+7 group). After implementing GEE, the odds of CP (aOR 0.97, 95% CI [0.65-1.45], p = 0.88) and LB (aOR 0.98, 95% CI [0.67-1.45], p = 0.93) were similar in both groups.CONCLUSIONS:
In our study cohort, mNC-FET based on LH/HCG+6 versus HCG+7 had similar pregnancy outcomes.Palabras clave
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Hormona Luteinizante
/
Criopreservación
/
Aborto Espontáneo
/
Transferencia de Embrión
Tipo de estudio:
Etiology_studies
/
Guideline
/
Observational_studies
/
Risk_factors_studies
Idioma:
En
Revista:
J Assist Reprod Genet
Asunto de la revista:
GENETICA
/
MEDICINA REPRODUTIVA
Año:
2021
Tipo del documento:
Article