The intrauterine environment during the luteal phase of the menstrual cycle

The pattern of an intrauterine biophysical parameter as an indicator of the implantation window: a feasibility study

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN85528745

Enrollment

Registered

2026-01-30

Start date

2022-01-10

Completion date

Unknown

Last updated

2026-05-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Endometrial readiness for embryo implantation Pregnancy and Childbirth

Interventions

During the luteal phase in healthy volunteers, intrauterine oxygen pressure is measured every 48 hours using the methodology described by Otossen et al. in "Observations on intrauterine oxygen tension

Eligibility

Sex/Gender

Female

Age

18 Years to 35 Years

Inclusion criteria

Inclusion criteria: 1. Female 2. Healthy 3. 18-35 years old 4. Regular menstrual cycles 5. BMI below 30 kg/m2

Exclusion criteria

Exclusion criteria: 1. Medical pathology: insulin-dependent diabetes mellitus, Cushing’s syndrome, uncontrolled thyroid dysfunction, hepatic and/or renal insufficiency, any condition contraindicating ovarian stimulation and/or pregnancy, antiphospholipid syndrome 2. Uterine pathology: endometriosis, uterine cancer, congenital malformations, endometrial polyps, uterine fibroids 3. Current smoker 4. Use of oral contraceptives or intrauterine device within the last 3 months 5. Inadequate understanding (oral and written) of the Spanish language

Countries

Spain

Contacts

Public ContactMelchor;Anna Carbonell;Teixidó

;

melchor.carbonell@vallhebron.cat;anna.teixido@vallhebron.cat+34 (0)934893177;+34 (0)934893177

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: May 22, 2026