Surgical Positions and Postoperative Atelectasis: A Lung Ultrasound Study
Trial statusNot yet recruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age18-80
SponsorCumhuriyet University
About this trial
The aim of this study is to prospectively evaluate the effect of surgical position on the development of postoperative atelectasis in patients undergoing surgery in supine, prone, lateral decubitus, and lithotomy positions using lung ultrasonography (LUS), and to investigate whether there is a difference between these positions.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Being between 18-80 years of age
Having ASA I-III status
Planning elective surgery under general anesthesia
Agreeing to participate in the study and signing the consent form
Disqualifiers
Patients requiring emergency surgery
Patients with ASA IV or higher
Presence of a known serious preoperative lung disease (COPD, Asthma, Pneumonia, Pleural effusion, Pneumothorax, Interstitial lung disease, Bronchiectasis, etc.)
History of neuromuscular disease
Trial population
The study will include a total of 100 patients in 4 groups, aged 18-65 years, with an ASA (American Society of Anesthesiologists) physical status between I and III, who are scheduled to undergo general anesthesia in supine, prone, lateral decubitus, and lithotomy positions.
Trial design
Design model
Case-only
Time perspective
Prospective
Treatments tested in this trial
lung ultrasound
Procedure/SurgeryLung Ultrasound (LUS) Protocol: The LUS evaluation will be performed by Dr. Burak Ağar using a Mindray ultrasound device \[Device brand/model and probe type, e.g., 3.5-5 MHz convex or 7-12 MHz linear probe\]
Treatment groups
100 Participants
are divided into 4 treatment groupsGroup A: Group 11 intervention
Group B: group 21 intervention
Group C: group 31 intervention
Group D: Group 41 intervention
Trial outcomes
Primary outcomes
1
Modified Lung Ultrasound Score
MLUS Scoring: Each region will be scored between 0-3 according to lung ventilation (MLUS Score): * 0 Points: Normal ventilation (presence of A-line, fewer than 3 B-lines) * 1 Point: Minor ventilation loss (≥ 3 B-lines or subpleural consolidations ≤ 1 cm in diameter separated by a normal pleural line) * 2 Points: Moderate ventilation loss (Multiple small subpleural consolidations ≤ 1 cm in diameter separated by multiple and converging B-lines or a thickened/irregular pleural line) * 3 Points: Severe ventilation loss (At least one consolidation \> 1 cm in diameter or subpleural consolidations \> 1x2 cm in diameter) The total MLUS score will be obtained by summing the scores of the 12 regions (Minimum 0, Maximum 36). Atelectasis will be defined as "predisposition to atelectasis when each quadrant score is 2 or 3"
Time frame
1. (T0):Immediately before anesthesia induction, in the supine position 2.(T1): Immediately before the patient is awakened, in the supine posit 3.(T2):Twenty minutes after the patient was admitted to the PACU (Post-Anesthesia Care Unit)Sponsors and contacts
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Source ClinicalTrials.gov
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