An interventional study of ultrasound in Atelectasis, Postoperative, sponsored by Severance Hospital. Completed at 1 site in Korea, Republic of. Open to participants aged 20 Years to 65 Years. Per ClinicalTrials.gov, last updated 2016-04-27.
Sponsored by Severance Hospital · Not applicable, Interventional, and Diagnostic
The aim of this study is to find out relationship between PaO2/FiO2 and atelectasis finding on intraoperative lung ultrasound.
Patients aged 20\~65 with ASA class (American Society of Anesthesiologists physical status classification) 1 or 2 who are scheduled to undergo general anesthesia by using endotracheal intubation and arterial line cannulation will participate in this study. The patients with abnormal chest x-ray finding, pregnancy, arrhythmia, ischemic heart disease will be excluded from this study as well as the patients who are scheduled to undergo lung or heart surgery.
After 5 minutes preoxygenation, patients will be monitored with pulse oxymetry, noninvasive blood pressure. General anesthesia will be proceeded with typical method and endotracheal intubation and arterial cannulation will be proceeded. After ventilator adjustment (tidal volume as 8 times of the patient's ideal body weight), airway pressures(peak and plateau) will be recorded. Subsequently, arterial blood sampling will be proceeded while examination of the atelectasis findings on lung ultrasound before surgery. Lung ultrasound examination will be proceeded on 6 sections of patient's basal segments of the lung, including anterior, lateral, posterior segment. Juxtapleural consolidation, loss of A lines, presence of B lines, air bronchogram, loss of sliding sign and presence of pulse sign on lung ultrasound finding will be investigated and recorded.
Same ultrasound examination and arterial blood sampling will be followed after surgery ends.
The results of PaO2/FiO2 on arterial blood samplings will be compared with findings on lung ultrasound before and after surgery.
301 studies on the registry are indexed under Pulmonary Atelectasis; 80 are open to participants now.
This study's enrollment of 26 is below the median of 61 across 222 interventional studies indexed under Pulmonary Atelectasis.
Browse Pulmonary Atelectasis studies →Severance Hospital is the lead sponsor of 50 studies on the registry; 2 are open to participants now.
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Exclusion Criteria:
After general anesthesia development of the atelectasis will be investigated by the lung ultrasound
Device: ultrasound
Juxtapleural consolidation, loss of A lines, presence of B lines, air bronchogram, loss of sliding sign and presence of pulse sign on lung ultrasound finding will be investigated and recorded.
Intraoperative lung ultrasound for atelectasis
Lung ultrasound examination for atelectasis findings (eg. whether there is a loss of A line or presence of B lines before and after surgery)
Time frame: Baseline (Before surgery begins) and Postoperative (Just after the surgery ends)
Change in PaO2/FiO2
Arterial blood sampling to find out whether their is a change in PaO2/FiO2 before and after surgery.
Time frame: Baseline (Before surgery begins) and Postoperative (Just after the surgery ends)
Airway pressure change
To find out if there is any difference between preoperative and postoperative airway pressures(peak and plateau pressure), monitored by ventilator used during general anesthesia in mmHg
Time frame: Baseline (Before surgery begins) and Postoperative (Just after the surgery ends)
This study is completed, as verified in Apr 2016. You cannot join it, but the record below documents what was studied.
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