A double-blind randomized controlled trial investigating a time-lapse algorithm for selecting Day 5 blastocysts for transfer.

Study Question: Can use of a commercially available time-lapse algorithm for Day 5 blastocyst selection improve pregnancy rates compared with morphology alone?

Summary Answer: The use of a time-lapse selection model to choose blastocysts for fresh single embryo transfer on Day 5 did not improve ongoing pregnancy rate compared to morphology alone.

What Is Known Already: Evidence from time-lapse monitoring suggests correlations between timing of key developmental events and embryo viability. No good quality evidence exists to support improved pregnancy rates following time-lapse selection.

Attitudes toward surrogacy among doctors working in reproductive medicine and obstetric care in Sweden.

Introduction: The aim of this study was to investigate attitudes and opinions towards surrogacy among physicians working within obstetrics and reproductive medicine in Sweden.

Material And Methods: Physicians working within medically assisted reproduction (MAR), antenatal care and obstetrics were invited to participate in a cross-sectional nationwide survey study. The study-specific questionnaire measured attitudes and experiences in three domains: attitudes towards surrogacy, assessment of prospective surrogate mothers, and antenatal and obstetric care for surrogate mothers.