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This study is designed to evaluate the occurrence of gastric insufflation and the critical volume of the stomach after three different modes of positive pressure ventilation during induction (Manual-controlled, volume-controlled and pressure-controlled ventilation)
Aspiration of gastric contents can be a serious perioperative complication, which can be related to facemask positive pressure ventilation with unprotected airway. Even with low peak airway pressure (<15 cm H2O) gastric insufflation may occur. Since gastric content and volume assessment is a new point-of-care ultrasound recommended application, the cross-sectional antra area will be measured using ultrasonography before, continuously during facemask ventilation and after intubation.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Manual-controlled | Other | Patient in the manual ventilation group will receive facemask ventilation to get a tidal volume of 8-10ml/kg with a respiratory rate of 15/min. The pop-off valve will be set to 20 cm H2O. |
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| Volume-controlled | Other | mechanical breath will be delivered by a Primus ventilator (Dräger, Lubeck, Germany) at a frequency of 15 breath/min. Tidal volume will be set to 8-10 ml/min. |
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| Pressure-controlled | Other | mechanical breath will be delivered by a Primus ventilator (Dräger, Lubeck, Germany) at a frequency of 15 breath/min. Pressure will be adjusted to obtain a tidal volume of 8-10 ml/min. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Diagnostic ultrasonography of gastric volume | Other | Ultrasonic measurement of gastric insufflation during positive pressure ventilation (secondary endpoint) and final gastric volume after positive pressure ventilation (primary endpoint) |
| Measure | Description | Time Frame |
|---|---|---|
| Gastric volume before and after positive pressure ventilation | 15 minutes |
| Measure | Description | Time Frame |
|---|---|---|
| Ultrasonographic detection of gastric insufflation during ventilation | 15 minutes |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Pierre LAFERE, MD, PhD | Contact | 0033298347658 | pierre.lafere@chu-brest.fr |
| Name | Affiliation | Role |
|---|---|---|
| Pierre LAFERE, MD,PhD | CHRU de Brest | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| CHRU de Brest | Recruiting | Brest | France |
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