PreOxygenEIT-study: Improving preoxygenation and mask ventilation during induction of general anesthesia by using electrical impedance tomography (EIT)

Not Applicable

Recruiting

Conditions: apnea due to inducation of anesthesia

Registration Number: DRKS00033334

Lead Sponsor: niversitätsklinikum Köln

Brief Summary: Not available

Detailed Description: Not available

Recruitment & Eligibility

Status: Recruiting

Sex: All

Target Recruitment: 72

Inclusion Criteria

Elective surgery, general anesthesia (without intubation / without
relaxation) is required
-Information about the study and written consent to the study
-No contraindications for the application of an EIT belt / for performing
EIT

Exclusion Criteria

-Aspiration risk during induction of anesthesia (rapid sequence induction)
-Intubation anesthesia/relaxation required during general anesthesia
-Difficult airway requiring awake fiberoptic intubation
-Emergency intubation/surgery
-Pregnancy
-EIT monitoring not possible due to:
-Immobilization (e.g. unstable spinal trauma / rib /
Sternum, pelvic fractures, etc.) that prohibit usage of EIT belt
or makes electrical impedance measurement impossible
- Patients with inserted transvenous or subcutaneous
Pacemaker, cardioverter (ICD) or other electrical
Pacemakers that are powered by alternating current
Electrical impedance measurement can be impaired in its function
-Patients with skin lesions/drainages/catheters in the area of
Location of the EIT belt

Study & Design

Study Type: interventional

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
-Amount of ventilated lung / amount of atelectasis in per cent in all 4 <br> different lung regions (ROI 1-4 in EIT monitoring) after preoxygenation / <br> after mask ventilation<br>-Resulting loss of lung ventilation (loss of compliance in EIT monitoring) <br> after preoxygenation / mask ventilation in per cent: Delta of lung <br> ventilation (Delta Compliance)

Secondary Outcome Measures

Name	Time	Method
-loss of compliance (ventilator) in per cnt after preoxygenation / mask <br> ventilation (Delta compliance)<br>-hemodynamic parameters in electrical impedance tomography (cardiac <br> index, stroke volume, stroke volume variation, variability of heart rate)<br>-pulmonal complications (pneumonia, respiratory insufficiency <br> (reintubation) or hypoxemia (PaO2 < 60mmHg, SpO2 <90% with room air).