Pre-oxygenation
Conditions
Keywords
Pre-oxygenation, vital capacity breaths
Brief summary
Pre-oxygenation is an anesthetic technique that allows for extended apneic (suspension of breathing) time prior to attempted endotracheal intubation. A common method to achieve adequate pre-oxygenation is having a patient take four vital capacity breaths of 100% oxygen in thirty seconds. This study seeks to determine if goal directed numeric coaching can lead to more accurate vital capacities during this technique.
Interventions
BEHAVIORALGroup A Standard 4 deep breaths measured in milliliters from the ventilator.
Tidal volume breath measured in milliliters
BEHAVIORALGroup B Coached 4 deep breaths measured in milliliters from the ventilator
Coached tidal volume breath measured in milliliters
Sponsors
Thomas Jefferson University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE
Intervention model description
Once an adequate seal with consistent end tidal carbon dioxide on capnography is achieved, time starts. Patients are divided into two groups: Group A: Anesthesia provider encourages patient to breathe deeply by intermittently stating take as deep a breath as you can. No goal directed numeric coaching is given. End point is 80% expired oxygen. The time it takes to achieve this end point and breath volumes are recorded. Group B: Anesthesia provider gives goal directed numeric coaching. For example, if the initial tidal volume achieved by the patient is 500mL, the provider states, that was a 500mL breath, now try to achieve a 1000mL breath. The numeric goal should continue to increase above the patient's actual tidal volume (volume moved in and out of lungs during normal, quiet breathing) until an end point of 80% is reached. The time it takes to achieve this end point and breath volumes are recorded.
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* American Society of Anesthesiologists Physical Status 1 and 2 * nonsmokers * primary English speaking * undergoing elective surgery with planned endotracheal intubation
Exclusion criteria
\-
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Vital capacity breaths measured in milliliters | Pre oxygenation period prior to induction of general anesthesia | Measured vital capacity breaths volume in milliliters |
Outcome results
None listed