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An open randomized control trial investigating the delivery of two levels of inspired oxygen to newborn infants during general anesthesia.
Eligible infants are infants of less than 44 weeks postconceptional age and without pulmonary disease or demand for supplemental oxygen or assisted ventilation. Control subjects receive current standard of care (anesthesia induction/pre-oxygenation with 80%, maintenance of anesthesia with 40%, and recovery with 80% inspired oxygen). Intervention subjects are maintained on room air throughout the procedure and supplemental oxygen added only if necessary according to the pre-specified oxygen saturation target. Subjects are monitored according to clinical protocols AND with cerebral oximetry (NIRS), transcutaneous measurement of partial pressure of oxygen (pO2), and blood-gas analyses. Blood and urine samples are collected for later analysis of markers for oxidative stress.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Control | No Intervention | High level of supplemental inspired oxygen | |
| Room-air | Experimental | Supplemental oxygen only provided if oxygen saturation below target |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Room-air | Procedure | Provision of room-air |
|
| Measure | Description | Time Frame |
|---|---|---|
| Transcutaneous and blood-gas pO2 | Area under curve (AUC) and absolute values of pO2 | 30 min |
| Measure | Description | Time Frame |
|---|---|---|
| Cerebral Oximetry | AUC of O2 saturation | 30 min |
| Atelectasis | Reduced lung compliance as a measure of atelectasis formation | 30 min |
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| Name | Affiliation | Role |
|---|---|---|
| Johan Agren, MD, PhD | Department of Women's and Children's Health, Uppsala University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Uppsala University Hospital, Pediatric anesthesia Unit | Uppsala | 75185 | Sweden |
| Type | Date | Date Unknown |
|---|---|---|
| Release | Nov 1, 2022 | |
| Reset | Sep 11, 2023 | |
| Release | Mar 27, 2025 | |
| Reset | Apr 15, 2025 |
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| Release Date | Unrelease Date | Unrelease Date Unknown | Reset Date | MCP Release Number |
|---|---|---|---|---|
| Nov 1, 2022 | Sep 11, 2023 | |||
| Mar 27, 2025 |
| ID | Term |
|---|---|
| D018496 | Hyperoxia |
| ID | Term |
|---|---|
| D012818 | Signs and Symptoms, Respiratory |
| D012816 | Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |
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| Isoprostane | Level of isoprostanes in blood and urine | 4 h |
| Apr 15, 2025 |