Publications by authors named "Katarzyna Litwicka"
Erratum to 'Which factors influence the success rate of egg donation programmes with imported vitrified oocytes?' [Reproductive BioMedicine Online 45 2 (2022) 264-272].
Reprod Biomed Online
November 2022
Research Question: Which factors influence the success rate of egg donation programmes with imported vitrified oocytes?
Design: Observational longitudinal cohort study of 431 oocyte donation cycles conducted between January 2015 and February 2019. A total of 398 couples underwent an IVF cycle with imported donated vitrified eggs. All consecutive oocyte donation cycles conducted at the Centre for Reproductive Medicine of the European Hospital in Rome, Italy, were included.
Background: Preimplantation genetic testing (PGT) is widely used today in in-vitro fertilization (IVF) centers over the world for selecting euploid embryos for transfer and to improve clinical outcomes in terms of embryo implantation, clinical pregnancy, and live birth rates.
Methods: We report the current knowledge concerning these procedures and the results from different clinical indications in which PGT is commonly applied.
Results: This paper illustrates different molecular techniques used for this purpose and the clinical significance of the different oocyte and embryo stage (polar bodies, cleavage embryo, and blastocyst) at which it is possible to perform sampling biopsies for PGT.
Purpose: The aim of the present study was to evaluate whether in a modified natural cycle (modified-NC) for a frozen-thawed single euploid blastocyst transfer, a critical LH value, above which human chorionic gonadotropin (hCG) administration should be avoided, may be defined.
Methods: One hundred and sixty-seven patients underwent modified natural cycle in order to transfer a single frozen-thawed euploid blastocyst. All embryos were obtained by intracytoplasmic sperm injection and were biopsied at the blastocyst stage and analyzed by means of array comparative genomic hybridization (aCGH).
Purpose: The aim of the study was to evaluate two methods of endometrial preparation for frozen-thawed single euploid blastocyst transfer: modified natural and artificial cycle with GnRH-agonist pituitary suppression.
Methods: In this prospective, controlled randomized trial, a total of 236 patients undergoing infertility treatment were randomized in 1:1 ratio; 118 received a frozen-thawed single euploid blastocyst transfer in a modified natural cycle and 118 in an artificial cycle with GnRH-agonist pituitary suppression. In the artificial protocol, GnRH-agonist combined with estradiol valerate was administered.
Aim: The objective of the study was to verify if prednisolone treatment may influence the in vitro fertilization (IVF) outcome in euthyroid women affected by thyroid autoimmunity.
Methods: One hundred and ninety-four patients including 60 positive for antithyroid antibodies (ATA) underwent the ovarian stimulation in the standard long protocol for IVF and 30 women received the low-dose prednisolone from the day of oocyte retrieval.
Results: The overall, clinical pregnancy and live birth rate in ATA-positive patients receiving prednisolone supplementation was significantly higher when confronted with ATA-positive untreated subjects (60.
Purpose Of Review: The current review aims to provide an overview of the already available and emerging treatment modalities for caesarean scar pregnancy (CSP).
Recent Findings: CSP is a type of ectopic gestation associated with a high risk of serious complications. The cause of this condition and the best management are still unclear.
Purpose: To evaluate the role of co-transfer of embryos derived from vitrified oocytes accumulated during the previous modified natural cycles and an embryo developed from the last one as an alternative to repetitive single embryo transfer ina fresh modified natural cycle.
Methods: Thirty-six patients underwent ICSI procedure with three frozen natural oocytes supplemented by a fresh one obtained from the fourth modified natural cycle. Thirty-one controls received at least three consecutive single embryo transfer in a fresh modified natural cycle.
Objective: To retrospectively evaluate whether sperm vacuoles influence clinical results, with a particular focus on live-birth rates, in 101 intracytoplasmic morphologically selected sperm injection (IMSI) cycles.
Design: Retrospective, observational study.
Setting: Medical center.
Objective: To evaluate the efficiency of slush nitrogen vitrification of human oocytes with or without cumulus cells in terms of survival rate and maintenance of meiotic spindle.
Design: Randomized, comparative study.
Setting: Medical center.
Purpose Of Review: The current review aims to provide an overview of the already available and emerging treatment modalities for caesarean scar pregnancy (CSP).
Recent Findings: CSP is a type of ectopic gestation associated with a high risk of serious complications. The cause of this condition and the best management are still unclear.
Objective: To report a case of a triplet heterotopic caesarean scar pregnancy (CSP) with two gestational sacs implanted in the caesarean scar after in vitro fertilization-embryo transfer.
Design: Case report.
Settings: Private reproductive medicine center and obstetric department of a university hospital.
Objective: To evaluate the influence of specific oocyte morphologic features (morphotypes) on intracytoplasmic sperm injection (ICSI) outcome. The identification of oocyte quality markers is particularly important when a low number of oocytes can be used for IVF.
Design: Retrospective analysis.
Objective: To evaluate the impact of uterine artery embolization (UAE) for fibroids on ovarian reserve in women younger than 40 years.
Design: Prospective study.
Setting: University-based reproductive endocrinology unit.
Objective: To report a case of permanent amenorrhea associated with endometrial atrophy after uterine artery embolization for symptomatic uterine fibroids.
Design: Case report.
Setting: Gynecologic clinic of a university hospital.