Ultrasonographic Comparison of Gastric Volume After Three Modes of Positive Facemask During Induction of Anaesthesia

Ultrasonographic Comparison of Gastric Volume After Three Modes of Positive Facemask. A Prospective Randomized Study.

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.

Inclusion Criteria:

• ASA status I and II

Exclusion Criteria:

• Pregnant woman Obese patient (BMI>30kgm-2) oropharyngeal or facial anomalies anticipated difficult mask ventilation upper respiratory tract infection history of gastric surgery patient refusal