An observational study in Postoperative Pulmonary Complications (PPCs) and Hypoxemia, sponsored by Dicle University. Not yet recruiting. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2026-04-07.
Sponsored by Dicle University · Observational
This prospective observational cohort study aims to evaluate the predictive value of perioperative lung ultrasound (LUS) score in determining early postoperative oxygen requirement and pulmonary complications in patients undergoing major non-thoracic surgery. Postoperative pulmonary complications remain a significant cause of morbidity and mortality in surgical patients. Lung ultrasound is a non-invasive, bedside imaging modality that allows real-time assessment of lung aeration and pathology. This study will investigate the association between perioperative LUS score and early postoperative respiratory outcomes, including oxygen requirement and pulmonary complications.
Postoperative pulmonary complications are among the most common causes of postoperative morbidity and prolonged hospital stay following major surgery. Early identification of patients at risk is crucial for timely intervention and improved outcomes. Lung ultrasound (LUS) has emerged as a reliable, non-invasive, and bedside tool for evaluating lung aeration and detecting pulmonary abnormalities such as atelectasis, interstitial syndrome, and pleural effusion.
This prospective observational cohort study is designed to assess the predictive value of perioperative lung ultrasound score in patients undergoing major non-thoracic surgery. A total of 97 patients aged between 18 and 65 years will be included. Lung ultrasound examinations will be performed perioperatively, and LUS scores will be calculated based on standardized protocols.
The primary objective of this study is to evaluate the relationship between perioperative LUS score and early postoperative oxygen requirement. Secondary objectives include assessing the association between LUS score and the incidence of postoperative pulmonary complications, need for intensive care unit admission, and length of hospital stay.
By identifying the predictive role of lung ultrasound scoring, this study aims to contribute to improved perioperative risk stratification and support the use of lung ultrasound as a practical tool in routine anesthetic and surgical care.
1,076 studies on the registry are indexed under Hypoxia; 213 are open to participants now.
This study's planned enrollment of 97 is above the median of 79 across 277 observational studies indexed under Hypoxia.
Browse Hypoxia studies →Dicle University is the lead sponsor of 28 studies on the registry; 7 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Adult patients aged 18 to 65 years undergoing elective major non-thoracic surgery under general anesthesia with an expected surgical duration of 3 hours or longer at Dicle University Faculty of Medicine Hospital.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Chronic obstructive pulmonary disease: long-term lung disease that makes it hard to breathe out, including emphysema and chronic bronchitis.
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
ASA physical status
The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
COPD
Chronic obstructive pulmonary disease: long-term lung disease that makes it hard to breathe out, including emphysema and chronic bronchitis.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
BMI (body mass index)
Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.
What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Patients aged 18 to 65 years undergoing major non-thoracic surgery who will be evaluated using perioperative lung ultrasound score to assess its association with early postoperative oxygen requirement and pulmonary complications.
Early Postoperative Oxygen Requirement
Assessment of the need for supplemental oxygen in the first 24 hours postoperatively and its association with perioperative lung ultrasound score.
Time frame: Within the first 24 hours after surgery
Postoperative Pulmonary Complications
Incidence of postoperative pulmonary complications including atelectasis, pneumonia, pleural effusion, respiratory failure, pneumothorax, acute respiratory distress syndrome (ARDS), pulmonary edema, and need for reintubation.
Time frame: Within 7 days after surgery
Correlation Between LUS Score and Hypoxemia
Evaluation of the relationship between perioperative lung ultrasound score and postoperative hypoxemia.
Time frame: Within 24 hours after surgery
Number of participants requiring ICU admission
Requirement for postoperative intensive care unit admission.
Time frame: Within 7 days after surgery
Length of Hospital Stay
Total duration of hospitalization measured in days.
Time frame: From surgery until hospital discharge (up to 30 days)
Duration of Postoperative Oxygen Therapy
Total duration of supplemental oxygen therapy required during the first 24 hours postoperatively.
Time frame: Within the first 24 hours after surgery
Number of participants requiring high-flow nasal oxygen or noninvasive ventilation
Requirement for advanced respiratory support including high-flow nasal oxygen or noninvasive ventilation in the postoperative period.
Time frame: Within 7 days after surgery
No study locations are listed for this record.
Plan to share: No — Individual participant data will not be shared due to institutional policies and ethical considerations regarding patient confidentiality.
No publications or documents are linked to this record.
This study is not yet recruiting, as verified in Mar 2026. You cannot join it, but the record below documents what was studied.
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