Outcome
Type |
Measure |
Description |
Time frame |
Safety issue |
Primary |
28-day survival rate (%) |
Survival at 28 days after hospitalization |
Up to 4 weeks |
|
Primary |
Ultrasound assessment of gastrointestinal function: ACF (times/min) |
Antral contraction frequency (ACF): In semi-recumbent position at 45°, infuse the stomach with 300ml of warm water. Within 6 minutes after infusion, divide the number of antral contractions by 3. |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Primary |
Ultrasound assessment of gastrointestinal function: ACA (%) |
Antral contraction amplitude (ACA): Measure the area during 3 maximum relaxations (S relaxation) and minimum contractions (S contraction), calculate the change in antral area (?S = S relaxation - S contraction), and take the average of 3 measurements. Antral contraction amplitude: ?S/S relaxation. |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Primary |
Ultrasound assessment of gastrointestinal function: MI |
Motility index (MI): ACF × ACA. |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Primary |
Ultrasound assessment of gastrointestinal function: GET (min) |
Gastric emptying time (GET): In semi-recumbent position at 45°, infuse the stomach with 300ml of warm water. Use the maximum antral relaxation as the standard and measure the area every 5 minutes until the liquid in the antrum is emptied. The time it takes for the gastric antrum to empty is GET. |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Primary |
Ultrasound assessment of gastrointestinal function: intestinal wall thickness (mm) |
Intestinal wall thickness of Jejunum/Ileum/Colon: Refers to the distance between the serosal and mucosal surfaces of the intestinal wall. The normal thickness of the small intestine is 2-3mm, and >3mm may indicate thickening of the intestinal wall; the thickness of the colon wall is approximately 3-4mm, and >5mm may suggest thickening of the intestinal wall. Attention should be paid to the colon pocket and the plica structure on the colon wall. |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Primary |
Ultrasound assessment of gastrointestinal function: intestinal diameter (cm) |
Intestinal diameter of Jejunum/Ileum/Colon: When not under pressure, the measurement of the width of the small intestine often refers to the distance between the mucosal surfaces of the intestinal wall. The intestinal lumen width of the small intestine (jejunum/ileum) is generally <2cm, and >3cm may indicate intestinal dilation; the internal diameter of the colon is generally <5cm. |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Primary |
Ultrasound assessment of gastrointestinal function: intestinal motility |
Intestinal motility of Jejunum/Ileum/Colon (yes or no): Under normal circumstances, intestinal movement can be clearly judged at the ultrasound interface. When the intestine is filled with gas or accompanied by intestinal dilation, intestinal motility can be judged by the "creeping gas sign" of the gas or the movement of the contents. In addition, attention should be paid to the intestinal motility caused by the pressure on the intestinal tube when moving the probe. |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Secondary |
Daily amount of enteral nutrition feeding (ml) |
Daily amount of enteral nutrition feeding |
Within 5 days after study inclusion |
|
Secondary |
Daily gastric residual volume (ml) |
Daily gastric residual volume |
Within 5 days after study inclusion |
|
Secondary |
Serum levels of intestinal fatty acid binding protein (iFABP, ng/ml) |
Serum levels of iFABP measured by ELISA. |
0, 72 and 120 hours after study inclusion |
|
Secondary |
Serum levels of citrulline (µmol/L) |
Serum levels of citrulline measured by ELISA. |
0, 72 and 120 hours after study inclusion |
|
Secondary |
Serum levels of diamine oxidase (DAO, U/L) |
Serum levels of DAO measured by ELISA. |
0, 72 and 120 hours after study inclusion |
|
Secondary |
Serum levels of D-lactic acid (mmol/L) |
Serum levels of D-lactic acid measured by ELISA. |
0, 72 and 120 hours after study inclusion |
|
Secondary |
Superior mesenteric artery resistance index |
Superior mesenteric artery resistance index evaluated by ultrasound |
0, 72 and 120 hours after study inclusion |
|
Secondary |
Intra-abdominal pressure (IAP) (mmHg) |
Intra-abdominal pressure (IAP) |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Secondary |
Diarrhea |
Yes (numbers) or No |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Secondary |
Alimentary tract hemorrhage |
Yes (numbers) or No |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Secondary |
Prealbumin concentration (g/L) |
Serum levels of prealbumin |
0, 72 and 120 hours after study inclusion |
|
Secondary |
Acute physiology and chronic health evaluation (APACHE) ? score |
0-67, higher scores correspond to more severe disease and a higher risk of death |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Secondary |
ICU length of stay (days) |
ICU length of stay |
Up to 4 weeks |
|
Secondary |
In-hospital mortality (%) |
Mortality rate during hospitalization |
Up to 4 weeks |
|
Secondary |
Peripheral venous blood CRP concentration (mg/L) |
CRP level measured by blood routine examination |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Secondary |
Peripheral venous blood hemoglobin concentration (g/L) |
Hemoglobin level measured by blood routine examination |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Secondary |
Absolute number of white blood cells in the peripheral venous blood (number/L) |
Absolute number of white blood cells measured by blood routine examination |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Secondary |
Absolute number of platelets in the peripheral venous blood (number/L) |
Absolute number of platelets measured by blood routine examination |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Secondary |
Absolute number of lymphocytes in the peripheral venous blood (number/L) |
Absolute number of lymphocytes measured by blood routine examination |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Secondary |
Whole blood pH |
Arterial pH measured by blood gas analysis |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Secondary |
Arterial PaO2 (mmHg) |
Arterial PaO2 measured by blood gas analysis |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Secondary |
Arterial PaCO2 (mmHg) |
Arterial PaCO2 measured by blood gas analysis |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Secondary |
Arterial bicarbonate (mmol/L) |
Arterial bicarbonate measured by blood gas analysis |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Secondary |
Arterial lactic acid (mmol/L) |
Arterial lactic acid measured by blood gas analysis |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Secondary |
Peripheral venous blood albumin concentration (g/L) |
Albumin level measured by Blood biochemical examination |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Secondary |
Peripheral venous blood total bilirubin concentration (µmol/L) |
Total bilirubin level measured by Blood biochemical examination |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Secondary |
Peripheral venous blood bound bilirubin concentration (µmol/L) |
Bound bilirubin level measured by Blood biochemical examination |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Secondary |
Peripheral venous blood creatinine concentration (µmol/L) |
Creatinine level measured by Blood biochemical examination |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Secondary |
Peripheral venous blood ALT concentration (U/L) |
ALT level measured by Blood biochemical examination |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|
Secondary |
Peripheral venous blood AST concentration (U/L) |
AST level measured by Blood biochemical examination |
0, 24, 48, 72, 96 and 120 hours after study inclusion |
|