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NCT Number: NCT07496905

The Effect of the Valsalva Maneuver in Endometrial Biopsy: A Randomized Controlled Trial

Endometrial sampling with a pipelle is a common procedure used to collect a small sample from the lining of the uterus. During the procedure, the cervix is sometimes held with a surgical instrument called a tenaculum, which may cause pain and anxiety for some women.

The Valsalva maneuver is a simple technique in which a person takes a deep breath and pushes as if trying to exhale forcefully. This increases pressure inside the abdomen and may help keep the uterus and cervix more stable during the procedure.

This study aims to compare pipelle sampling performed with the Valsalva maneuver to the standard method using a tenaculum. The study will evaluate whether the Valsalva maneuver can reduce pain and anxiety while maintaining procedure success and improving patient satisfaction.

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Key information

About this study

Endometrial sampling using a pipelle device is a widely used, minimally invasive procedure for the evaluation of abnormal uterine bleeding and other endometrial pathologies. In the conventional technique, cervical traction with a tenaculum is often used to stabilize the cervix and facilitate insertion of the pipelle catheter. However, the use of a tenaculum may increase procedure-related pain and anxiety.

The Valsalva maneuver increases intra-abdominal pressure and may provide temporary stabilization of the uterus and cervix. This physiological effect may facilitate pipelle insertion without the need for cervical traction. Eliminating the use of a tenaculum may reduce patient discomfort and anxiety during the procedure.

This study is designed to compare pipelle endometrial sampling performed with the Valsalva maneuver and the conventional method using a tenaculum. The primary objectives are to evaluate pain perception during the procedure and procedure success. Secondary outcomes include patient anxiety and overall patient satisfaction.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

-Endometrial sampling indication in reproductive age group of patients over 18 years of age, who can communicate in Turkish.

Exclusion criteria

  • Patients under 18 years of age - postmenopausal
  • Pregnancy
  • Patients with known stenotic cervical os
  • Patients with a history of acute cervicitis;
  • Patients with intense anxiety;
  • Need for simultaneous endocervical curettage;
  • Need for general or local anesthesia
  • Having used analgesic medication before the procedure;
  • History of a known malignancy, uterine anomaly, or leiomyoma affecting the cervical canal or uterine cavity, or uterine prolapse;
  • Patients with known chronic plevic pain

Treatment and study plan

endometrial biopsy

Procedure

Endometrial sampling performed using a pipelle cannula.

Tenaculum Application

Procedure

Application of a tenaculum to the cervix to stabilize it during endometrial biopsy.

valsalva maneuver

Procedure

Patients perform the Valsalva maneuver during endometrial biopsy to reduce perceived pain.

Primary outcomes

  1. Visual Analog Scale(VAS) scores

    Time frame: Baseline, immediately before the procedure, intra-procedural, and 15 minutes post-procedure

    Pain will be assessed using a 10-cm Visual Analog Scale (VAS) (0 = no pain; 10 = worst imaginable pain). VAS scores will be recorded at four predefined time points:

    The primary endpoint will be the comparison of VAS pain scores between the two groups.

Secondary outcomes

  1. Procedure Success and Patient Satisfaction

    Time frame: Up to 15 minutes

    Outcome Measure: Procedure satisfaction Post-procedure, procedure satisfaction will be evaluated using a 5-point Likert scale (1 = very difficult; 5 = very easy). All obtained endometrial samples will be assessed for adequacy and histopathological diagnosis. Procedural failure will be defined as the inability to access the uterine cavity with the Pipelle cannula without cervical dilatation after three attempts.

Sponsors and collaborators

Lead sponsor

Prof. Dr. Cemil Tascıoglu Education and Research Hospital Organization

Other

Registry information

Official study title

The Effect of the Valsalva Maneuver on Pain and Procedure Success in Endometrial Biopsy: A Randomized Controlled Trial

Important dates

Study start
2025
Primary completion
2026
Study completion
2026
First posted
Mar 27, 2026
Registry last updated
Aug 18, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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