Circadian Rhythm Disorders, Critical Illness, Feeding Patterns
Conditions
Brief summary
Circadian rhythms plays an important role for healthy. And critical illness contributes to the disruption of circadian rhythms. Not only right but also feeding can affect the circadian clock gene expression. In a investigators' previous study, some metabolic indicators (the albumin level, total cholesterol level and total bile acid level) and the increases in lymphocyte counts in the sequential feeding group were different from those in the continuous feeding group. Investigators think sequential feeding may adjust circadian clock gene expression for its effect on metabolism and immunity. Moreover, sequential feeding did alter the abundances of some gut microbes to some degree in the investigators' previous study. Investigators think sequential feeding may adjust gut flora rhythms.
Interventions
OTHERfeeding type
In our department, the ICU patients received continuous feeding or sequential feeding. Patients received continuous feeding with a constant velocity by an enteral feeding pump over one day. In sequential feeding type, after achieving ≥80% of the nutrition target calories (25-30 kcal/kg/d), the patients received intermittent feeding. The total daily dosage of enteral nutrition was equally distributed during three periods at 7-9:00, 11-13:00 and 17-19:00. The enteral nutritional suspension administered during each period was given at a uniform rate within two hours by an enteral feeding pump. The other times of the day were fasting times.
Sponsors
Qingdao University
Study design
Observational model
CASE_CONTROL
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Patients newly admitted to ICU were eligible for inclusion.
Exclusion criteria
* An estimated feeding time of less than 10 days in ICU; * Diabetes; * Gastrointestinal disease (gastrointestinal surgery, gastrointestinal bleeding, pancreatitis, Crohn's disease, ulcerative colitis, irritable bowel syndrome); * Inability to tolerate ≥80% of the nutrition target calories (25-30 kcal/kg/d) with enteral feeding through gastric tube; * The ability to eat orally at admission.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| clock genes expression | 7 days feeding | Genes including BMAL1 CLOCK TIMELESS PER1 and so on |
| Gut Flora Rhythm | 7 days feeding | α diversity including shannon index and so on |
Countries
China
Contacts
Primary Contactbo yao, Dr.
Outcome results
None listed