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Related Concept Videos

Oogenesis02:07

Oogenesis

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In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways from the equivalent procedure of spermatogenesis in males. First, meiotic divisions during oogenesis are asymmetric, meaning that a large oocyte (containing most of the cytoplasm) and minor polar body are produced as a result of meiosis I, and again following meiosis II. Since only oocytes will go on to form embryos if fertilized, this unequal...
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Related Experiment Video

Updated: Aug 1, 2025

Author Spotlight: Evaluating the Impact of Immediate Partial Removal of Cumulus-Oocyte Complexes on Fertilization Efficiency and Embryo Quality
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Author Spotlight: Evaluating the Impact of Immediate Partial Removal of Cumulus-Oocyte Complexes on Fertilization Efficiency and Embryo Quality

Published on: October 18, 2024

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Weekday vs. weekend oocyte retrievals: is there a difference?

Miriam Tarrash1, Casey Sciandra2, Alexandra Peyser1

  • 1Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology, Northwell Health, North Shore University Hospital, Manhasset, New York, United States.

Human Fertility (Cambridge, England)
|April 27, 2023
PubMed
Summary

Weekday versus weekend oocyte retrievals (ORs) show no significant difference in procedure duration or post-anaesthesia care unit (PACU) time. Factors like BMI, AMH, and oocyte yield impact recovery times, not the day of the week.

Keywords:
Oocyte retrievalassisted reproductive technologyprocedure timeweekend effect

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Area of Science:

  • Reproductive Medicine
  • Clinical Research
  • Surgical Outcomes

Background:

  • Oocyte retrieval (OR) is a critical step in assisted reproductive technologies.
  • Understanding factors influencing procedure and recovery times is essential for optimizing patient care and resource allocation.
  • Previous studies have not extensively compared weekday versus weekend OR outcomes.

Purpose of the Study:

  • To determine if there are significant differences in procedure duration and post-anaesthesia care unit (PACU) time between weekday (WD) and weekend (WE) oocyte retrievals (ORs).
  • To identify patient-specific factors associated with longer procedure and recovery times during OR.

Main Methods:

  • Retrospective cohort study analyzing 578 oocyte retrievals (ORs) from 664 patients.
  • Patients were stratified by the number of oocytes retrieved (1-10, 11-20, >20).
  • Statistical analyses included Student's t-test and linear regression to assess the impact of AMH, BMI, and oocyte yield on procedure and PACU duration.

Main Results:

  • No statistically significant difference was found in procedure duration or PACU time between weekday (WD) and weekend (WE) oocyte retrievals (ORs).
  • Longer procedure durations were significantly associated with higher BMI (p=0.04), anti-Müllerian hormone (AMH) levels (p=0.01), and increased oocyte retrieved (p<0.01).
  • Increased PACU times positively correlated with the number of oocytes retrieved (p=0.04), but not with AMH or BMI.

Conclusions:

  • The day of the week (weekday vs. weekend) does not appear to influence oocyte retrieval (OR) procedure duration or post-anaesthesia care unit (PACU) recovery time.
  • Patient characteristics such as BMI, AMH, and the number of oocytes retrieved are key determinants of intra-operative and post-operative recovery durations.
  • These findings suggest that scheduling of oocyte retrievals can be based on clinical necessity rather than day-of-week considerations.