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Published on: August 9, 2024
Is there an accurate method to measure metabolic requirement of institutionalized children with spastic cerebral
Siu Pik Peggy Lee1, Ka Ming Cheung, Chun Hung Ko
1Dietetics Department, United Christian Hospital, Kowloon East Cluster, Hong Kong SAR, China. pspl@bigfoot.com
Insights
Energy expenditure in children with spastic cerebral palsy (CP) measured by indirect calorimetry (IC) significantly differs from predicted equations. Actual intake aligns better with IC measurements, suggesting a need for CP-specific predictive formulas.
Area of Science:
- Pediatric Nutrition
- Neurology
- Metabolic Research
Background:
- Accurate energy expenditure (EE) assessment is crucial for managing nutritional status in children with spastic cerebral palsy (CP).
- Existing predictive equations for EE may not accurately reflect the metabolic demands of children with CP.
Purpose of the Study:
- To compare energy expenditure measured by indirect calorimetry (IC) with estimations from established predictive equations and actual dietary intake in children with spastic CP.
- To evaluate the accuracy of different predictive formulas (body surface area, recommended daily allowance, CP-specific) against measured EE.
Main Methods:
- Recruited 15 children (3-18 years) with spastic CP.
- Measured mean energy expenditure (MEE) using indirect calorimetry (IC).
- Compared MEE with three predicted energy expenditure (PEE) equations and actual intake, using statistical tests (Friedman, paired t-tests, ICC).
Main Results:
- MEE was 800.5 ± 295.7 kcal/d, while predicted values ranged from 1,213.4 (BSA) to 1,928.1 (RDA) kcal/d.
- Actual intake averaged 935.3 ± 222.9 kcal/d, showing no significant difference from MEE (P = .128).
- Significant differences (P < .001) were found between MEE and all PEE equations, with a weak correlation (ICC = 0.635).
Conclusions:
- Current predictive equations for energy expenditure are inaccurate for children with spastic CP.
- Actual dietary intake appears to be a more reliable indicator of energy needs than standard predictive formulas in this population.
- Further research is needed to develop a population-specific predictive equation for energy expenditure in children with spastic CP.
Objectives:
This study hypothesized that there is no difference between energy expenditure measured by indirect calorimetry (IC) and that estimated by predicted formulas compared with the actual intake of children with spastic cerebral palsy (CP).
Methods:
Fifteen children aged 3 to 18 years with spastic CP and associated complications were recruited. IC was used to measure mean energy expenditure (MEE) compared with 3 predicted equations for energy expenditure (PEE), including body surface area (BSA), the recommended daily allowance (RDA), and an equation designed specifically for patients with CP. Friedman and paired t tests were used to examine the variance between PEE and MEE. Intraclass correlation coefficient (ICC) was used to explore the correlation between MEE and PEE. The pretest and posttest core temperatures were compared using the Wilcoxon signed rank test.
Results:
Mean ± standard deviation MEE was 800.5 ± 295.7 kcal/d; BSA was 1,213.4 ± 171.2 kcal/d; RDA was 1,928.1 ± 341.0 kcal/d; and CP was 1,603.1 ± 215.8 kcal/d. The actual diet intake provided 935.3 ± 222.9 kcal/d. Post hoc analysis revealed a significant difference between mean MEE and PEE (P < .001) but not mean actual intake (P = .128). In addition, the ICC of MEE vs PEE was 0.635 at a 95% confidence interval, indicating a weak correlation. In addition, mean pretest body temperature was 36.4°C ± 1°C, and mean posttest body temperature was 35.8°C ± 2°C.
Conclusions:
The study showed that MEE was significantly different from PEE, but not from actual intake. This warrants further exploration to develop a population-specific PEE for children with spastic CP.
