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This study aims to compared the effects of high flow nasal during the induction and during the weaning of anesthesia on intraoperative and postoperative oxygenation and postoperative atelectasis in obese patients undergoing bariatric surgery versus the standard of care, which consists in supplemental oxygen with face mask (Venturi mask).
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| HFNC | Experimental | HFNC with a 60 liters per minute flow will be given to the patients before anesthesia induction and before extubation at the end of the surgery |
|
| Standard | Active Comparator | This patients will be managed as usual care. Pre-oxygenation before induction will be performed with supplemental oxygen but without positive pressure. After extubation patients will be oxygenated through a ventury mask. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| HFNC group | Procedure | Positive pressure plus supplemental oxygen through a high flow nasal oxygen device |
|
| Measure | Description | Time Frame |
|---|---|---|
| Oxygenation | The oxygenation (the ratio of partial pressure of arterial oxygen with inspiratory oxygen fraction, PaO2/FIO2) informs of the percentadge of shunt. | intraoperative |
| Measure | Description | Time Frame |
|---|---|---|
| Oxygenation | PaO2/FIO2 | First 24 postoperative hours |
| Atelectasis | Atelectasis evaluated with X-ray | First 24 postoperative hours |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Hospital clÃnico universitario | Valencia | 46010 | Spain |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 12456460 | Background | Eichenberger A, Proietti S, Wicky S, Frascarolo P, Suter M, Spahn DR, Magnusson L. Morbid obesity and postoperative pulmonary atelectasis: an underestimated problem. Anesth Analg. 2002 Dec;95(6):1788-92, table of contents. doi: 10.1097/00000539-200212000-00060. | |
| 15105237 | Background | Coussa M, Proietti S, Schnyder P, Frascarolo P, Suter M, Spahn DR, Magnusson L. Prevention of atelectasis formation during the induction of general anesthesia in morbidly obese patients. Anesth Analg. 2004 May;98(5):1491-5, table of contents. doi: 10.1213/01.ane.0000111743.61132.99. |
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| ID | Term |
|---|---|
| D001261 | Pulmonary Atelectasis |
| ID | Term |
|---|---|
| D008171 | Lung Diseases |
| D012140 | Respiratory Tract Diseases |
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| Standard group | Procedure | Supplemental oxygen through venturi mask |
|
| 25081420 | Background | Ireland CJ, Chapman TM, Mathew SF, Herbison GP, Zacharias M. Continuous positive airway pressure (CPAP) during the postoperative period for prevention of postoperative morbidity and mortality following major abdominal surgery. Cochrane Database Syst Rev. 2014 Aug 1;2014(8):CD008930. doi: 10.1002/14651858.CD008930.pub2. |