# A Multicenter Prospective Randomized Controlled Clinical Trial Comparing Constant (5%) Versus Sequential (5%-2%) Oxygen Concentration Embryo Culture Protocols in Assisted Reproductive Technology

> **NCT07050537** · NA · RECRUITING · sponsor: **The First Affiliated Hospital with Nanjing Medical University** · enrollment: 980 (estimated)

## Conditions studied

- Fertility Issues
- Blastocyst IVF
- Embryo Culture

## Interventions

- **PROCEDURE:** Constant oxygen concentration protocols in embryo culture
- **PROCEDURE:** Sequential oxygen concentration protocols in embryo culture

## Key facts

- **NCT ID:** NCT07050537
- **Lead sponsor:** The First Affiliated Hospital with Nanjing Medical University
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** RECRUITING
- **Start date:** 2025-03-01
- **Primary completion:** 2027-03-31
- **Final completion:** 2027-08-31
- **Target enrollment:** 980 (ESTIMATED)
- **Last updated:** 2025-07-03


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT07050537

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT07050537, "A Multicenter Prospective Randomized Controlled Clinical Trial Comparing Constant (5%) Versus Sequential (5%-2%) Oxygen Concentration Embryo Culture Protocols in Assisted Reproductive Technology". Retrieved via AI Analytics 2026-06-08 from https://api.ai-analytics.org/clinical/NCT07050537. Licensed CC0.

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