nvt
Conditions
Interventions
Inject 20 cc of air into the trachea via a suction catheter localized in the
endobronchial tube ( standard), inject 20 cc of air midesophageal and at
stomach level. The order of air injection locali
Sponsors
Leids Universitair Medisch Centrum
Eligibility
Age
18 Years to 64 Years
Inclusion criteria
Inclusion criteria: patients that need a gastric feeding tube patients who need a new gastric feeding tube patients who have given informed consent
Exclusion criteria
Exclusion criteria: - Does not need a gastric feeding tube and doesn*t have one. - Laparotomy wound interfering with abdominal ultrasound. - Patient in prone position. - Has no informed consent
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The result of the ultrasound image analysis done by the blinded intensivist in correlation with the golden standard (CXR) will be plotted in a 2x2 table of frequencies. To assess the effectiveness of the test we will calculate its sensitivity and specificity. Sensitivity being the proportion of images correctly categorized as having a "mosaic sign present* by the blinded intensivist out of all images representing a gastric GFT localisation (objectivized by CXR). Specificity being the proportion of images correctly categorized as *mosaic sign absent* out of all images representing a non-gastric GFT localisation.The latter is our primary study parameter to ensure a minimal of false positive results. The analysis will be done using the statistical program SPSS. | — |
Secondary
| Measure | Time frame |
|---|---|
| Incorrect test results will analysed for a possible correlation to clincal data; patient gender, BMI, PEEP( positive end expiratory pressure), tidal volume, and presence of abdominal gas in left upper quadrant (gastric region) in CXR using logistic regression. These specific clinical parameters have been chosen because they could potentially have influence on the quality of the ultrasound images produced and therefore on the interpretation of the latter. Logistic regression calculations will be performed with the use of the statistical program SPSS. | — |
Countries
Netherlands
Contacts
Public ContactJ.E.LM Lopez Matta
Leids Universitair Medisch Centrum
Outcome results
None listed