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İn This Study, Patients Undergoing Bariatric Surgery Will be Divided Into Two Groups. The Control Group Will Receive Normal-flow, While the Study Group Will Receive Low-flow Inhalational Anesthesia. The Aim is to Compare the Incidence of Postop Atelectasis-between the Two Groups Using USG Evaluation

THE EFFECT OF LOW-FLOW-ANESTHESİA ON POSTOPERATİVE ATELECTASİS İN PATİENTS UNDERGOİNG BARİATRİC SURGERY: AN EVALUATİON USİNG ULTRASOUND

Status
Not yet recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07041567
Acronym
BCAİA-AUD28
Enrollment
60
Registered
2025-06-27
Start date
2025-06-20
Completion date
2026-01-31
Last updated
2025-06-27

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

Conditions

Atelectasis, Pulmonary Complications, Ultrasonography

Brief summary

This study is a clinical trial and its purpose is to evaluate the effect of low and normal flow anesthesia on atelectasis formation in patients undergoing bariatric surgery by ultrasonography. In this study, lung ultrasounds and respiratory function tests will be performed on volunteers before and after surgery. These procedures are completely painless and safe. No invasive procedure will be performed in the study; the methods used do not pose any additional risk other than existing treatment procedures.

Interventions

In Group D, patients undergoing bariatric surgery will receive low-flow inhalational anesthesia (0.5-1 L/min) with sevoflurane. The aim is to evaluate whether the reduced fresh gas flow rate decreases the incidence of postoperative atelectasis, assessed via pulmonary ultrasonography. In Group N, patients undergoing bariatric surgery will receive standard-flow inhalational anesthesia (2-4 L/min) with sevoflurane. This group serves as the comparator to evaluate the impact of flow rate on postoperative atelectasis incidence.

Sponsors

Istanbul University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
DIAGNOSTIC
Masking
SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

* Will undergo Sleeve Gastrectomy surgery; * 18-65 years old * ASA III patients.

Exclusion criteria

* Patients who do not give consent * Patients with ASA 4 and above * Those with serious respiratory comorbidities (interstitial lung disease, serious permanent lung diseases) * Uncontrolled Hypertension, Diabetes Mellitus * Under 18 and over 65 years of age * Chronic renal failure, Liver failure * CHF (EF\<30) will not be included in the study

Design outcomes

Primary

MeasureTime frame
the atelectasis rate with the Lung Ultrasound score (AUS score).8 months

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026