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The purpose of this study is to investigate the effect of oxygen concentration during alveolar recruitment on absorption ateletasis.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| FiO2_1.0 | Active Comparator | Alveolar recruitment is performed with 100% oxygen concentration at specific time points. |
|
| FiO2_0.4 | Experimental | Alveolar recruitment is performed with 40% oxygen concentration at specific time points. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| FiO2_1.0 | Procedure | Alveolar recruitment is performed with 100% oxygen concentration after general anesthesia induction, after position change to Trendelenburg, after position change to supine, and at the end of operation. |
| Measure | Description | Time Frame |
|---|---|---|
| Modified lung ultrasound score | The score is calculated by adding up the 12 individual quadrant scores assessed using lung ultrasound. Each quadrant score ranges from 0 (minimal atelectasis)~3 (severe atelectasis), so the maximum total score is 36. | Intraoperative (at the end of operation, before emergence) |
| Measure | Description | Time Frame |
|---|---|---|
| Modified lung ultrasound score | The score is calculated by adding up the 12 individual quadrant scores assessed using lung ultrasound. Each quadrant score ranges from 0 (minimal atelectasis)~3 (severe atelectasis), so the maximum total score is 36. | Postoperative 30 minutes |
| Intraoperative desaturation |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Jae-Hyon Bahk, MD, PhD | Seoul National University Hospital | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Seoul National University Hospital | Seoul | 110-744 | South Korea |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 32682397 | Derived | Kim BR, Lee S, Bae H, Lee M, Bahk JH, Yoon S. Lung ultrasound score to determine the effect of fraction inspired oxygen during alveolar recruitment on absorption atelectasis in laparoscopic surgery: a randomized controlled trial. BMC Anesthesiol. 2020 Jul 18;20(1):173. doi: 10.1186/s12871-020-01090-y. |
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| ID | Term |
|---|---|
| D001261 | Pulmonary Atelectasis |
| ID | Term |
|---|---|
| D008171 | Lung Diseases |
| D012140 | Respiratory Tract Diseases |
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| FiO2_0.4 | Procedure | Alveolar recruitment is performed with 40% oxygen concentration after general anesthesia induction, after position change to Trendelenburg, after position change to supine, and at the end of operation. |
|
Oxygen saturation by pulse oximetry <95% |
| Intraoperative |
| Intraoperative partial pressure of arterial oxygen/fraction of inspired oxygen ratio | Partial pressure of arterial oxygen/fraction of inspired oxygen ratio | Intraoperative (20minutes after each recruitment) |
| Postoperative partial pressure of arterial oxygen/fraction of inspired oxygen ratio | Partial pressure of arterial oxygen/fraction of inspired oxygen ratio | Postoperative 30 minutes |
| Postoperative pulmonary complication | respiratory infection, respiratory failure, pleural effusion, atelectasis, pneumothorax, atelectasis, bronchospasm, aspiration pneumonitis | Postoperative 24 hours |