Observing the effects of low flow anesthesia on waste gas emissions
Official title: The Effect of Two Different Fresh Gas Flows on Inhaled Gas Consumption During Wash-in Period in Patients Undergoing Low Flow Anesthesia: An Observational Study
Run by Balikesir University · NCT06967948 · Data updated 2026-11-12
This study is testing how different levels of gas flow during anesthesia affect the amount of waste gas released into the air and the costs of the anesthetic used, with volunteers aged 18 to 60 participating.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years to 60 Years |
| Sex | All |
| Enrollment | 40 (estimated) |
| Sponsor | Balikesir University Academic / other |
| Drugs / interventions | chemotherapy |
| Locations | 3 sites (Balıkesir and 2 other locations) |
| Status | Recruiting |
| Started | April 10, 2025 |
| Main results expected | October 2025 |
| Study ends | December 2025 |
| Registry record updated | May 16, 2025 |
| Trial ID | NCT06967948 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are ASA I-II risk group patients undergoing surgeries lasting between 2 to 4 hours that require general anesthesia.
✕Probably not a fit
Patients with severe lung disease, significant cardiac issues, or those who have recently undergone chemotherapy or radiotherapy may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This observational study involves volunteers aged 18 to 60 who will undergo general anesthesia while their brain response to anesthetic agents and the concentration of inhaled anesthetics will be monitored. The researchers aim to evaluate the impact of different fresh gas flow rates (1 to 4 l/min) on the amount of waste gas released into the atmosphere and the associated costs of inhalation agents. By analyzing the relationship between gas flow rates and environmental impact, the study seeks to identify more sustainable anesthesia practices.
Why it matters
Potential benefit: If successful, this study could lead to reduced environmental impact and lower costs associated with inhalation anesthesia.
How similar studies have gone: While the approach of reducing fresh gas flow rates is established, the specific focus on environmental impact and cost reduction in this context is relatively novel.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * ASA I-II risk group patients Duration of surgery between 2 hours and 4 hours, cases with general anesthesia Exclusion Criteria: * Patient refusal to participate in the study * Under 18 years old BMI\>40 * Patients receiving invasive mechanical ventilator support in the last 1 month * Patients who have received chemotherapy or radiotherapy in the last 2 months * Those with severe lung disease (COPD, asthma, pulmonary infection, bronchiectasis, previous need for non-invasive mechanical ventilation, oxygen therapy or steroid therapy for acute attack) * Known severe pulmonary hypertension * Smoke poisoning (carbon monoxide, cyanide poisoning) * Alcohol or acetone poisoning * Malignant hyperthermia * Intracranial tumor * Hemodynamic instability * Shock * Neuromuscular disease * Pathologies causing increased intracranial and intraocular pressure * Those with severe cardiac arrhythmias Those with -EF\<30 * Severe peripheral arterial disease * Patients with liver and kidney dysfunction
Where it's running
-
Balıkesir University Health Practice and Research Hospital Operating Room
Balıkesir, Turkey (Türkiye) Recruiting -
Balıkesir University Health Practice and Research Hospital
Balıkesir, Turkey (Türkiye) Recruiting -
Balıkesir University Health Practice and Research Hospital
Balıkesir, Turkey (Türkiye) Recruiting
Study contacts
- Study coordinator: Serkan Uçkun, assistant professor
- Email: serkanuckun@yahoo.com
- Phone: +90 535 370 11 64
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.