NCT07320092 Supine vs Prone Position and Atelectasis Assessed by Lung Ultrasound
| NCT ID | NCT07320092 |
| Status | Recruiting |
| Phase | — |
| Sponsor | Istanbul University - Cerrahpasa |
| Condition | Postoperative Atelectasis |
| Study Type | OBSERVATIONAL |
| Enrollment | 80 participants |
| Start Date | 2025-09-15 |
| Primary Completion | 2026-03-30 |
Eligibility & Interventions
Eligibility Fast-Check
Enter your details for a quick preliminary check. This does not replace medical advice.
What to Expect as a Participant
This is an observational study. You will not receive an experimental treatment; researchers will collect data based on your existing condition or standard treatment.
This trial targets 80 participants in total. It began in 2025-09-15 with a primary completion date of 2026-03-30.
⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.
Brief Summary
Atelectasis frequently develops during and after general anesthesia due to factors such as anesthesia-induced diaphragmatic dysfunction, reduced functional residual capacity, altered ventilation-perfusion matching, and surgical positioning. The development of atelectasis has been associated with postoperative hypoxemia and other pulmonary complications. Lung ultrasound (LUS) has emerged as a reliable, radiation-free bedside imaging modality for the detection and monitoring of atelectasis. LUS allows assessment of lung aeration through standardized ultrasound patterns and scoring systems, enabling dynamic evaluation in the perioperative period. This is a prospective, observational cohort study designed to compare the incidence and severity of atelectasis in patients undergoing surgery in the supine position versus the prone position under general anesthesia. Adult patients undergoing elective surgical procedures will be enrolled. No experimental intervention will be applied, and all anesthetic and surgical management will follow routine clinical practice. Lung ultrasound examinations will be performed at predefined time points after induction of anesthesia and before extubation. A standardized lung ultrasound protocol and scoring system will be used to assess lung aeration loss and detect the presence of atelectasis. The primary outcome of the study is the difference in atelectasis detected by lung ultrasound between supine and prone surgical positions. The secondary outcome is the change in lung ultrasound scores over time. This study aims to clarify the effects of supine and prone positions on perioperative atelectasis and to support the clinical use of lung ultrasound as a noninvasive monitoring tool in perioperative and anesthetic practice..
Eligibility Criteria
Inclusion Criteria: * Adult patients aged 18 years or older. * Patients scheduled for elective surgery under general anesthesia. * Patients undergoing surgery in the supine or prone position. * Patients able to provide informed consent. Exclusion Criteria: * Emergency surgical procedures. * Pre-existing severe pulmonary disease affecting lung ultrasound assessment. * Hemodynamic instability requiring urgent intervention. * Contraindications to lung ultrasound examination.
Contact & Investigator
ÖZLEM KORKMAZ DİLMEN, PROFESSOR
PRINCIPAL INVESTIGATOR
Istanbul University - Cerrahpasa
Frequently Asked Questions
Who can join the NCT07320092 clinical trial?
This trial is open to participants of all sexes, aged 18 Years or older, up to 80 Years, studying Postoperative Atelectasis. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.
Is NCT07320092 currently recruiting?
Yes, NCT07320092 is actively recruiting participants. Contact the research team at chinara.namazova@iuc.edu.tr for enrollment information.
Where is the NCT07320092 trial being conducted?
This trial is being conducted at Istanbul, Turkey (Türkiye).
Who is sponsoring the NCT07320092 clinical trial?
NCT07320092 is sponsored by Istanbul University - Cerrahpasa. The principal investigator is ÖZLEM KORKMAZ DİLMEN, PROFESSOR at Istanbul University - Cerrahpasa. The trial plans to enroll 80 participants.