Berntsen S

ORCID: 0000-0001-9769-5002 · 4 papers in corpus
2026
Does intracytoplasmic sperm injection outperform conventional in vitro fertilization in couples without severe male factor infertility? A systematic review and meta-analysis of randomized controlled trials.
Human reproduction (Oxford, England) ·doi:10.1093/humrep/deag066

Study questionDoes ICSI improve the live birth rate in couples without severe male factor infertility compared to conventional IVF (cIVF)?Summary answerHigh-quality evidence showed no benefit of ICSI over cIVF in improving live birth or cum…

2025
IVF versus ICSI in patients without severe male factor infertility: a randomized clinical trial.
Nature medicine ·doi:10.1038/s41591-025-03621-x

Intracytoplasmic sperm injection (ICSI) and conventional in vitro fertilization (c-IVF) are widely used fertilization techniques in assisted reproduction, but their relative effectiveness in patients without severe male factor infertility r…

2023
Endometrial scratching in women undergoing IVF/ICSI: an individual participant data meta-analysis.
Human Reproduction Update ·doi:10.1093/humupd/dmad014

BackgroundIn IVF/ICSI treatment, the process of embryo implantation is the success rate-limiting step. Endometrial scratching has been suggested to improve this process, but it is unclear if this procedure increases the chance of implantati…

2021
In vitro fertilisation (IVF) versus intracytoplasmic sperm injection (ICSI) in patients without severe male factor infertility: study protocol for the randomised, controlled, multicentre trial INVICSI.
BMJ open ·doi:10.1136/bmjopen-2021-051058

IntroductionOver the last decades, the use of intracytoplasmic sperm injection (ICSI) has increased, even among patients without male factor infertility. The increase has happened even though there is no evidence to support that ICSI result…