Mechanical ventilation is a widely used treatment on the Intensive Care Unit (ICU). Swallowing dysfunction (dysphagia) after extubation may cause aspiration, and is associated with poor outcomes: pneumonia, reintubation, a prolonged length of hospital stay and increased mortality. The exact underlying pathophysiology of post-extubation dysphagia (PED) is unknown. This exploratory pilot study is the first step that aims to fill this knowledge gap to ultimately improve current treatment and prevention of post-extubation dysphagia. Using FEES (Flexible Endoscopic Evaluation of Swallowing), HRIM (High Resolution Impedance Manometry) and EMG (electromyography) simultaneously, 5 healthy subjects and 25 patients within 24 hours after extubation will be studied.
Observational study model: The group of healthy subjects will be recruited using posters at the local university and the internet. The healthy subjects will be studied before the group of patients to assess the feasibility and possible interactions of simultaneously recording FEES, HRIM and EMG. Then, the group of patients will be studied. They will be recruited from the Intensive Care Unit. See In- and Exclusion criteria for details.
Study Type
OBSERVATIONAL
Enrollment
5
Radboudumc
Nijmegen, Netherlands
The number of patients with aspiration during FEES will be assessed.
Time frame: At time of measurement (within 24 hours post-extubation)
Pathophysiology of PED
The pathophysiology of PED will be determined after simultaneous measurement of FEES, HRIM and EMG. The pathophysiology will be classified into several categories: reduced pharyngeal contractility / muscular weakness, reduced upper esophageal sphincter (UES) opening/relaxation, direct oropharyngeal or laryngeal trauma of the tube, reduced laryngeal sensibility, among other categories. To enable classification, parameters obtained from FEES, HRIM and EMG will be used. FEES: presence of penetration and aspiration, residue, reduced sensibility (among others); HRIM: pharyngeal peak pressure, UES maximum admittance, intrabolus pressure (among others); EMG: duration of muscle activity (among others).
Time frame: At time of measurement (within 24 hours post-extubation)
The number of adverse events will be assessed.
Time frame: Participants will be followed until hospital discharge, an expected average of 28 days
Interaction of FEES on HRIM recording
HRIM outcomes during the simultaneous recording will be compared with outcomes of recording with only HRIM in situ.
Time frame: At time of measurement (within 24 hours post-extubation)
Correlation of FEES with HRIM
The correlation of FEES outcomes, e.g. PAS and residue, with HRIM outcomes, e.g. swallow risk index and post-swallow impedance ratio.
Time frame: At time of measurement (within 24 hours post-extubation)
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