Bispectral index in hypercapnic encephalopathy associated with COPD exacerbation: a pilot study

Figures & data

Table 1 Baseline characteristics of the patients

Age (years)	67.6 (15.5)
Sex
Male, n (%)	7 (70)
Female, n (%)	3 (30)
Hospital stay (days)	9.2 (3.8)
FEV1, %ref.	39.1 (17.8)
FEV1, mL	937 (275)
Noninvasive mechanical ventilation length of use (hours)	47.1 (19.4)
Initial PaCO2, mmHg	82.7 (18.2)
Initial pH	7.27 (0.03)
PaCO2 in the stable phase, mmHg	52.7 (10)
pH in the stable phase	7.37 (0.03)

Note: Data are expressed as mean (SD) except for sex.

Abbreviation: ref., reference.

Figure 1 Individual evolution of the BIS values in ECOPD patients.

Note: The bar indicates mean value.
Abbreviations: au, arbitrary units; BIS, bispectral index; ECOPD, exacerbations of COPD.

Figure 2 Correlation between BIS values and the scores obtained with the three clinical scales: (A) Ramsay Sedation Scale, (B) Glasgow Coma Scale, and (C) Richmond Agitation–Sedation Scale.

Abbreviation: BIS, bispectral index.