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Revista Medica Herediana

Print version ISSN 1018-130XOn-line version ISSN 1729-214X


DIAZ-DE LOS SANTOS, Manuel; CIEZA, Javier  and  VALENZUELA, Raúl. Correlation between indexes of electrical bioimpedance and Apache II score in patients with septic shock. Rev Med Hered [online]. 2010, vol.21, n.3, pp.111-117. ISSN 1018-130X.

Objective: Objective: To determine the correlation between various indexes of bioelectrical impedance (IBE) and APACHE II score (sAII) in patients with septic shock. Material and methods: We included 30 patients > 14 years old with septic shock admitted to the Adults intensive care unit (ICU) at the Hospital Nacional Cayetano Heredia – Peru. The (sAII) was calculated and various IBE parameters were measured (phase angle, impedance index and relationship ICF/ECF). Correlations were calculated by multiple linear regression and Pearson. Results: 60% were male, mean age was 60 ± 20.92 years, height 161 ± 6 cm, weight 65.46 ± 8.7 kg and time of admission ICU was 8.4 ± 5.99 hours. 86.6% required mechanical ventilation, the most common infection was respiratory in origin (63.3%). The mean sAII was 18.8 ± 9.2, ICU stay was 8.4 ± 5.99 days and mortality was 50% per month. We only found a statistically significant negative correlation (r = - 0.46, p = 0.01) between the phase angle (FA) and (sAII). Neither the impedance index nor the relationship ICF/ECF had significant correlation. The best predictor of mortality was FA: those who died had an FA <6 degrees (average 3.67 ± 0.63), p <0.05. Conclusions: Only FA correlated with the score (sAII) and was the index that best predicted mortality in patients with septic shock, exceeding the APACHE II score (sAII). (Rev Med Hered 2010; 21:111-117).

Keywords : APACHE II score; phase angle; impedance index; ICF /ECF; septic shock.

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