Ventilation
Conditions
Brief summary
This study aims to evaluate the effect of paratracheal pressure on mask ventilation in anesthetized obese patients in terms of expiratory tidal volume, and peak inspiratory pressure.
Interventions
OTHERMask ventilation
Mask ventilation is performed under paratracheal pressure or no pressure in a randomized, crossover manner.
Sponsors
SMG-SNU Boramae Medical Center
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
OTHER
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
19 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Adult patients with a body mass index ≥ 30 kg.m-2 undergoing general anesthesia for elective surgery
Exclusion criteria
* Structural abnormalities or diseases in the face, neck, upper airway, or esophagus * Increased risk of aspiration (pregnancy) * Carotid artery stenosis, cerebrovascular disease
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Expiratory tidal volume | For 2 min of mask ventilation after the induction of anesthesia | Volume controlled mechanical ventilation is delivered during mask ventilation. Expiratory tidal volumes on the monitor screen are recorded during mask ventilation |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Peak inspiratory pressure | For 2 min of mask ventilation after the induction of anesthesia | Peak inspiratory pressure on the screen is recorded during mask ventilation. |
| Inadequate tidal volume | For 2 min of mask ventilation after the induction of anesthesia | Incidence of tidal volume less than 150 mL is recorded. |
| Incidence of hypoxia | For 2 min of mask ventilation after the induction of anesthesia | Occurrence of hypoxia (SpO2 \<90%) is recorded. |
Countries
South Korea
Outcome results
None listed