Indirect Calorimetry in Mechanically Ventilated Patients: A Prospective, Randomized, Clinical Validation of 2 Devices Against a Gold Standard.
JPEN J Parenter Enteral Nutr
; 41(8): 1272-1277, 2017 11.
Article
en En
| MEDLINE
| ID: mdl-27488830
ABSTRACT
BACKGROUND AND AIMS:
The 2 currently available indirect calorimeters, CCM Express Indirect Calorimeter (MedGraphics, St Paul, MN) and Quark RMR ICU Indirect Calorimeter (COSMED, Rome, Italy), have not been validated against a gold standard in mechanically ventilated patients. Our aim was to do so using a gold-standard, modified Tissot bell-spirometer method in mechanically ventilated patients who were hemodynamically, respiratory, and metabolically stable.METHODS:
We studied 30 patients undergoing general anesthesia and major gynecological surgery. We measured oxygen consumption ([Formula see text]O2) and resting energy expenditure (REE) in a randomized, sequential, crossover design with double determination of each device.RESULTS:
Compared with the modified Tissot bell-spirometer, the CCM Express Indirect Calorimeter demonstrated a mean Δ-REE of +361 kcal/d, corresponding to a 31% overestimation of energy requirements. Bland-Altman analysis for REE showed a mean (SD) bias of 384 (124) with limits of agreement 142-627 kcal/d. QUARK RMR ICU demonstrated a mean Δ-REE of 81 kcal/d, corresponding to a 7% overestimation of energy requirements. Bland-Altman plot analysis showed a mean (SD) bias of 77 (167) with limits of agreement -249 to 404 kcal/d.CONCLUSIONS:
The QUARK RMR ICU Indirect Calorimeter compared better with the gold standard for values of [Formula see text]O2 and REE than did the CCM Express Indirect Calorimeter in mechanically ventilated patients who were circulatory and respiratory stable. Both indirect calorimeters had low precision.Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Respiración Artificial
/
Calorimetría Indirecta
Tipo de estudio:
Clinical_trials
/
Observational_studies
Límite:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
País/Región como asunto:
Europa
Idioma:
En
Revista:
JPEN J Parenter Enteral Nutr
Año:
2017
Tipo del documento:
Article
País de afiliación:
Dinamarca