The changes of local pulmonary ventilation should be registered with an electric impedance tomography (EIT) before and after a dilatative tracheotomy. The hypothesis is that the EIT cannot show changes in local ventilation due to the tracheotomy.
Study Type
OBSERVATIONAL
Enrollment
29
Universitätsklikum Hamburg Eppendorf
Hamburg, Germany
Universitätsklinikum Hamburg Eppendorf
Hamburg, Germany
volume of ventilation, regional compliance.
measurement starts twenty minutes before surgery and ends after realised recruitment after tracheotomy.
Time frame: Change from Baseline (2 Minutes preoperative) until 2 Minutes postoperative
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