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Measured Versus Estimated Energy Requirement in the ICU Patients

Caloric Estimation Using Predictive Equations and Indirect Calorimetry in ICU Patients

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT07024264
Enrollment
133
Registered
2025-06-17
Start date
2022-10-01
Completion date
2024-03-31
Last updated
2025-06-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Critical Illness, Energy Requirement, Equation, Indirect Calorimetry, Malnutrition

Brief summary

The goal of this observational study is to compare energy requirements estimated by predictive equation and indirect calorimetry across different BMI categories, and to examine how these estimates, along with early nutritional strategies and progressive caloric delivery relate to ICU outcomes. The main questions it aims to answer are: 1. To evaluate whether predictive equation and/or indirect calorimetry provides accurate caloric targets in critically ill patients. 2. To identify high-risk malnutrition patients (underweight, normal and overweight, obese) who may benefit most from IC-based measurement. 3. To investigate the impact of caloric strategies and nutritional achievement during the acute phase on the length of ICU stay.

Interventions

OTHERTotal energy requirement calculated by predictive equation

Critically ill patients are highly susceptible to malnutrition, making accurate caloric estimation essential to prevent both underfeeding and overfeeding during the acute phase in the ICU. Although predictive equations (PE) are widely used to estimate energy requirement, indirect calorimetry (IC) remains the gold standard. This study aimed to compare energy requirements estimated by PE and IC across different BMI categories.

Sponsors

Taipei Medical University Shuang Ho Hospital
Lead SponsorOTHER

Study design

Observational model
OTHER
Time perspective
RETROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
20 Years to 105 Years
Healthy volunteers
No

Inclusion criteria

* Length of ICU stay \> 4 days * Mechanically ventilated adults (\>20 y/o) * Tube feeding * At high risk of malnutrition by Global Leadership Initiative on Malnutrition (GLIM) criteria: underweight and obesity * Doctor's preference: cachexia, hypermetabolic status, TPN etc.,…

Exclusion criteria

* Length of ICU stay \<4 days * Mechanically ventilated adults (\<=20 y/o)

Design outcomes

Primary

MeasureTime frameDescription
The primary outcome was ICU length of stay.From admitted to ICU which defined as day 1, until transferred to the general wards or expired, up to 12 weeks.This study aimed to compare energy requirements estimated by PE and IC across different BMI categories, and to examine how these estimates, along with early nutritional strategies and progressive caloric delivery relate to the length of ICU stay.

Countries

Taiwan

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026