UMIN-CTR Clinical Trial

Unique ID issued by UMIN UMIN000059676
Receipt number R000068158
Scientific Title Impact of the Revised Nutrition Protocol on Gastrointestinal Adverse Events and Nutritional Adequacy in Intensive Care Unit Patients: A Retrospective Observational Study
Date of disclosure of the study information 2025/11/07
Last modified on 2025/11/07 12:09:06

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Basic information

Public title

A Retrospective Study on the Implementation and Outcomes of the Revised Nutrition Protocol in Intensive Care Unit Patients

Acronym

ICU Nutrition Protocol Revision Study

Scientific Title

Impact of the Revised Nutrition Protocol on Gastrointestinal Adverse Events and Nutritional Adequacy in Intensive Care Unit Patients: A Retrospective Observational Study

Scientific Title:Acronym

Effect of ICU Nutrition Protocol Revision

Region

Japan


Condition

Condition

Adult patients(over 18 years old) admitted to the intensive care unit (ICU)

Classification by specialty

Medicine in general Surgery in general Intensive care medicine

Classification by malignancy

Malignancy

Genomic information

NO


Objectives

Narrative objectives1

The aim of this study is to clarify the incidence and characteristics of gastrointestinal adverse events under the implementation of a standardized nutrition protocol in critically ill patients. Specifically we will evaluate the incidence and temporal trends of gastrointestinal symptoms such as constipation diarrhea and vomiting during enteral nutrition and assess their association with the amount of nutritional intake. As secondary analyses we will calculate each patients nutritional adequacy rate (the ratio of administered to required energy and protein intake) and assess the protocol achievement level in our ICU. These findings will help identify current challenges and guide improvements in enteral nutrition procedures and preventive measures for gastrointestinal complications.

Basic objectives2

Efficacy

Basic objectives -Others


Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

Data extracted from medical records will include
Patient characteristics age sex height weight (BMI) admission diagnosis and main ICU condition (e.g. trauma sepsis postoperative management).
Severity indicators: APACHE II and SOFA scores at ICU admission.
Clinical course: ICU admission/discharge dates, duration of mechanical ventilation, types and duration of sedatives, anesthetics, and opioids (as potential factors affecting gut motility).
Nutrition management: day of enteral nutrition initiation (days from ICU admission) route of administration (nasogastric nasojejunal etc.) type of formula (product name fiber content) and use of parenteral nutrition.
Nutritional intake: daily enteral feeding rate volume (mL/day) caloric intake (kcal/day) and protein intake (g/day) including interruptions and reasons.
Gastrointestinal symptoms: daily bowel movements stool consistency (including Bristol scale scores) vomiting events (frequency and content) and gastric residual volume.
Calculated variables:
Required energy/protein: estimated using institutional protocols or established formulas.
Cumulative intake: total energy and protein administered via enteral and parenteral routes.
Nutritional adequacy rate: percentage of actual intake vs. requirement evaluated for the first 7 days and overall ICU stay.
Time to first defecation: days from ICU admission to first bowel movement (constipation defined as >3 days without defecation).
Days with diarrhea: frequency and duration of diarrhea episodes.
Time to onset of GI symptoms: interval between enteral nutrition initiation and occurrence of vomiting or abdominal distension.

Key secondary outcomes



Base

Study type

Interventional


Study design

Basic design

Single arm

Randomization

Non-randomized

Randomization unit


Blinding

Open -no one is blinded

Control

Historical

Stratification


Dynamic allocation


Institution consideration


Blocking


Concealment



Intervention

No. of arms

1

Purpose of intervention

Treatment

Type of intervention

Medicine Food Other

Interventions/Control_1

Intervention period:
January 1 2022 December 31 2023 (Old nutrition protocol group approximately 200 patients)
January 1 2024 December 31 2025 (New nutrition protocol group approximately 100 patients)
Patients are managed according to institutional enteral nutrition protocols. The new protocol includes earlier initiation stepwise dose escalation and use of fiber-containing formulas when tolerated.

Interventions/Control_2


Interventions/Control_3


Interventions/Control_4


Interventions/Control_5


Interventions/Control_6


Interventions/Control_7


Interventions/Control_8


Interventions/Control_9


Interventions/Control_10



Eligibility

Age-lower limit

18 years-old <=

Age-upper limit


Not applicable

Gender

Male and Female

Key inclusion criteria

Diagnosis: all eligible ICU cases
Disease stage: all stages included
Age over 18 years at enrollment
All sexes included
Patients admitted to the ICU during the study period

Key exclusion criteria

Patients deemed unsuitable for the nutrition protocol by the attending physician
Patients with DNAR orders or those receiving palliative treatment
Patients under 18 years of age

Target sample size

300


Research contact person

Name of lead principal investigator

1st name kaori
Middle name
Last name kajitani

Organization

Tohoku University Hospital

Division name

ICU

Zip code

9808574

Address

1-1 seiryomachi aobaku senndai miyagi japan

TEL

0227177691

Email

kaori.kajitani.b8@tohoku.ac.jp


Public contact

Name of contact person

1st name masaki
Middle name
Last name abe

Organization

Tohoku University Hospital

Division name

ICU

Zip code

9808574

Address

1-1 seiryomachi aobaku senndai miyagi japan

TEL

0227177691

Homepage URL


Email

masaki.abe.e1@tohoku.ac.jp


Sponsor or person

Institute

Tohoku University Hospital

Institute

Department

Personal name



Funding Source

Organization

Tohoku University Hospital

Organization

Division

Category of Funding Organization

Other

Nationality of Funding Organization



Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization

Tohoku University Hospital ICU

Address

1-1 seiryomachi aobaku senndai miyagi japan

Tel

0227177691

Email

masaki.abe.e1@tohoku.ac.jp


Secondary IDs

Secondary IDs

NO

Study ID_1


Org. issuing International ID_1


Study ID_2


Org. issuing International ID_2


IND to MHLW



Institutions

Institutions



Other administrative information

Date of disclosure of the study information

2025 Year 11 Month 07 Day


Related information

URL releasing protocol


Publication of results

Unpublished


Result

URL related to results and publications


Number of participants that the trial has enrolled


Results


Results date posted


Results Delayed


Results Delay Reason


Date of the first journal publication of results


Baseline Characteristics


Participant flow


Adverse events


Outcome measures


Plan to share IPD


IPD sharing Plan description



Progress

Recruitment status

Preinitiation

Date of protocol fixation

2022 Year 01 Month 01 Day

Date of IRB


Anticipated trial start date

2025 Year 12 Month 01 Day

Last follow-up date

2027 Year 12 Month 31 Day

Date of closure to data entry


Date trial data considered complete


Date analysis concluded



Other

Other related information



Management information

Registered date

2025 Year 11 Month 07 Day

Last modified on

2025 Year 11 Month 07 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000068158