Article
Bioelectrical impedance parameters in critically ill children: Importance of reactance and resistance
Registro en:
AZEVEDO, Zina Maria Almeida de et al.Bioelectrical impedance parameters in critically ill children: Importance of reactance and resistance. Clinical Nutrition, Edinburgh, v. 13, n. 37, p. 1-6, 2013.
10.1016/j.clnu.
Autor
Azevedo, Zina Maria Almeida de
Moore, Daniella Campelo Batalha Cox
Matos, Flavia Aparecida Alves de
Fonseca, Vania Matos
Peixoto, Maria Virginia Marques
Elsas, Maria Ignez Capella Gaspar
Santinoni, Erika
Anjos, Luiz Antonio dos
Ramos, Eloane Gonçalves
Resumen
FIOCRUZ, FAPERJ, CNPq Background & aims: Currently, there are no clinical or laboratory parameters that can be used efficiently
to predict the prognosis of critically ill patients, but in some situations, raw bioelectrical impedance
parameters have been shown to be useful. The purpose of this study was to investigate the behavior of
reactance and resistance in the severity of the critically ill pediatric patient.
Methods: We prospectively analyzed bioelectrical impedance in a sample of 332 critically ill pediatric
patients submitted to mechanical ventilation. The values taken on admission and discharge were correlated
with major outcomes to the critically ill patient.
Results: We found an association of low values of Xc/H (<27.7 Ohm/m) and of R/H (<563.6 Ohm/m) on
admission with multiple organs dysfunction greater or equal to 4. Both R/H and Xc/H increased significantly
between admission and discharge among survivors, while among nonsurvivors there was
a trend of decrease between admission and the last measurement before death.
Conclusions: Bioelectrical impedance is a useful tool for monitoring of critically ill pediatric patients. A
possible role of R/H and Xc/H, especially the latter, as a predictive biomarker of evolution for septic shock
and organ dysfunction still remains to be elucidated.