Investigating oxygen levels in varicose vein patients during spinal anesthesia

Association Between Sensory Block Level, Oxygen Therapy, and ORi in Varicose Vein Patients Undergoing Spinal Anesthesia: A Correlation Study

Kocaeli University · NCT06566690

This study is testing how oxygen levels change in patients with varicose veins during spinal anesthesia to see if better monitoring can help keep them safe during surgery.

Quick facts

Study typeObservational
Enrollment56 (estimated)
Ages18 Years to 65 Years
SexAll
SponsorKocaeli University (other)
Locations1 site (Kocaeli)
Trial IDNCT06566690 on ClinicalTrials.gov

What this trial studies

This observational study aims to assess the relationship between the Oxygen Reserve Index (ORI), peripheral capillary oxygen saturation (SpO2), and oxygen therapy in patients undergoing spinal anesthesia for varicose vein treatment. By monitoring both ORI and SpO2, the study seeks to provide insights into how these measurements can help prevent hypoxia and hyperoxia during surgery. The research will focus on patients with varying levels of sensory block to understand how spinal anesthesia affects respiratory function and oxygenation. The findings could enhance perioperative care by improving oxygen management in these patients.

Who should consider this trial

Good fit: Ideal candidates for this study are patients classified as ASA I-II who are undergoing spinal anesthesia for varicose vein treatment.

Not a fit: Patients with chronic obstructive pulmonary disease (COPD), significant smoking history, cancer, interstitial lung disease, high BMI, or those refusing spinal anesthesia will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to better oxygen management during spinal anesthesia, reducing the risks of hypoxia and hyperoxia for patients.

How similar studies have performed: While the use of ORI in conjunction with SpO2 monitoring is a relatively novel approach, similar studies have shown promise in improving oxygen management during anesthesia.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

- ASA I-II

Exclusion Criteria:

* Chronic Obstructive Pulmonary Disease (COPD)
* Smoking history of \>30 pack-years
* Cancer patients
* Interstitial lung disease patients
* Patients with Body Mass Index (BMI) \>30 kg/m²
* Patient refusal of spinal anesthesia
* Refusal to participate in the study

Where this trial is running

Kocaeli

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Hyperoxia, Hypoxia, hyperoxia, hypoxia, oxygen therapy, spinal anaesthesia

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.