Author/Editor     Vlaisavljević, Veljko
Title     Embryo transfer and luteal support in natural cycles
Type     članek
Vol. and No.     Letnik 14, št. 6
Publication year     2007
Volume     str. 686-692
ISSN     1472-6491 - Reproductive biomedicine online
Language     eng
Abstract     Embryo transfer policy and luteal supplementation was reviewed, comparing literature data and the results from the Maribor IVF Centre. A retrospective analysis of 1024 cycles in patients undergoing IVF, intracytoplasmic sperm injection (ICSI) or testicular sperm aspiration in unstimulated cycles was carried out using four different approaches for cycle monitoring. This showed that the most successful protocol for monitoring was administration of human chorionic gonadotrophin (HCG) when serum oestradiol was >0.49 nmol/l and follicle diameter was at least 15 mm. The implantation rate per transferred embryo was higher when a blastocyst was transferred (42.8%) rather than a day-2 embryo (23.5%) in the same monitoring protocol. Analysis of the influence of patient age on the success of oocyte retrieval, oocyte fertilization, embryo transfer rate and delivery rate demonstrates that patient age does not influence the rate of positive oocyte retrieval or fertilization rate as much as it influences pregnancy rate per embryo transfer. The delivery rate per cycle was dramatically influenced by age in patients over 38 years. There is no clear evidence in the literature as to whether luteal phase support is necessary in natural cycles for IVF/ICSI. Comparing the data, a higher pregnancy rate was observed if HCG was administered after embryo transfer.
Descriptors     Embryo Transfer
Zarodek, prenos
Estradiol
Estradiol
Fertilization in Vitro
Oploditev in vitro
Luteal Phase
Lutealna faza
Luteinizing Hormone
Luteinizirajoči hormon
Ovarian Follicle
Ovarijski folikel
Pregnancy Rate
Nosečnost, stopnja
Sperm Injections, Intracytoplasmic
Injiciranje semena, intracitoplazmično
blood
Kri
methods
Metode
urine
Urin
blood supply
Prekrvavitev
methods
Metode