apnea due to inducation of anesthesia
Conditions
Interventions
Group 1: Interventional group 1A (Biofeedback-group, EIT- monitor visible)
Ascending PEEP during mask ventilation at induction (PEEP 0, 5, 8 mbar).
Group 2: Interventional group 1B (Biofeedback-group,
Sponsors
Universitätsklinikum Köln
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Inclusion criteria
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
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
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| -Amount of ventilated lung / amount of atelectasis in per cent in all 4 different lung regions (ROI 1-4 in EIT monitoring) after preoxygenation / after mask ventilation -Resulting loss of lung ventilation (loss of compliance in EIT monitoring) after preoxygenation / mask ventilation in per cent: Delta of lung ventilation ("Delta Compliance") | — |
Secondary
| Measure | Time frame |
|---|---|
| -loss of compliance (ventilator) in per cnt after preoxygenation / mask ventilation (Delta compliance) -hemodynamic parameters in electrical impedance tomography (cardiac index, stroke volume, stroke volume variation, variability of heart rate) -pulmonal complications (pneumonia, respiratory insufficiency (reintubation) or hypoxemia (PaO2 < 60mmHg, SpO2 <90% with room air). | — |
Countries
Germany
Contacts
Public ContactSandra Emily; Stoll;
Universitätsklinikum Köln;"Studiensponsor" Qualitätssicherung für klinische Studien, Uniklinikum Köln, Zentrum für klinische Studien
Outcome results
None listed