Gastric Insufflation During Positive Pressure Ventilation

Seoul National University

Status: Unknown

Conditions: Gastric Insufflation

Treatments: Diagnostic Test: ultrasound examination of air insufflation in the upper esophageal region and stomach

Study type: Interventional

Funder types: Other

Identifiers

NCT04964882

31-2021

Details and patient eligibility

About

Effect of peak inspiratory pressure on the gastric insufflation is evaluated using ultrasonography during face mask ventilation in obese adults. Effect of facial mask holding techniques on the gastric insufflation is also evaluated.

Enrollment: 78 estimated patients

Sex: All

Ages: 20+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Patients with body mass index ≥ 30 kg/m2 who are scheduled for general anesthesia

Exclusion criteria

• Risk of delayed gastric emptying or gastroesophageal reflux (gastroesophageal reflux disease, achalasia, history of stomach surgery, gastrointestinal obstruction, uncontrolled DM)
• Pregnancy
• Known or predicted difficult airway

Trial design

Primary purpose: Prevention

Allocation: Non-Randomized

Interventional model: Sequential Assignment

Masking: Single Blind

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78 participants in 6 patient groups

C-E Mask ventilation under PIP 10 cmH2O

Experimental group

Description:

Two-handed C-E technique is performed during face mask ventilation using a mechanical ventilator with a peak inspiratory pressure of 10 cmH2O.

Treatment:

Diagnostic Test: ultrasound examination of air insufflation in the upper esophageal region and stomach

C-E Mask ventilation under PIP 15 cmH2O

Experimental group

Description:

Two-handed C-E technique is performed during face mask ventilation using a mechanical ventilator with a peak inspiratory pressure of 15 cmH2O.

Treatment:

Diagnostic Test: ultrasound examination of air insufflation in the upper esophageal region and stomach

C-E Mask ventilation under PIP 20 cmH2O

Experimental group

Description:

Two-handed C-E technique is performed during face mask ventilation using a mechanical ventilator with a peak inspiratory pressure of 20 cmH2O.

Treatment:

Diagnostic Test: ultrasound examination of air insufflation in the upper esophageal region and stomach

V-E Mask ventilation under PIP 10 cmH2O

Experimental group

Description:

Two-handed V-E technique is performed during face mask ventilation using a mechanical ventilator with a peak inspiratory pressure of 10 cmH2O.

Treatment:

Diagnostic Test: ultrasound examination of air insufflation in the upper esophageal region and stomach

V-E Mask ventilation under PIP 15 cmH2O

Experimental group

Description:

Two-handed V-E technique is performed during face mask ventilation using a mechanical ventilator with a peak inspiratory pressure of 15 cmH2O.

Treatment:

Diagnostic Test: ultrasound examination of air insufflation in the upper esophageal region and stomach

V-E Mask ventilation under PIP 20 cmH2O

Experimental group

Description:

Two-handed V-E technique is performed during face mask ventilation using a mechanical ventilator with a peak inspiratory pressure of 20 cmH2O.

Treatment:

Diagnostic Test: ultrasound examination of air insufflation in the upper esophageal region and stomach