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Table 3 Clinical, EEG and laboratory variables associated with functional outcome

From: The association between the presence and burden of periodic discharges and outcome in septic patients: an observational prospective study

 

Functional outcome

Favourable (n = 55)

Unfavourable (n = 37)

Univariate

Multivariate

p value

p value

OR

CI 95%

Age (> 65y)

22 (40%)

22 (59%)

0.067

0.06

2.59

[0.96–7.02]

Female

18 (33%)

12 (32%)

0.97

  

APACHE II

20 [15–24]

26 [21–33]

0.02

  

non–neuro APACHE II

17 [10–23]

19 [14–25]

0.31

  

APACHE II (> 23)

20 (36%)

21 (57%)

0.054

0.5

1.39

[053–3.66]

CAM-ICU + 

18/47 (38%)

11/23 (49%)

0.45

  

CRS-R

22 [11–23]

3 [1–18]

 < 0.001

  

GCS

14 [11–15]

7 [3–14]

 < 0.001

  

Sedation

12 (22%)

18 (49%)

0.007

  

 Propofol dose (mg/kg/day)

17 [3–47]

25 [15–35]

0.25

  

 Propofol duration (day)

1 [1–2]

3 [2–4.5]

0.007

  

 Mdz dose (mg/kg/day)

0.6 [0.6–1.5]

0.2 [0.1–04]

0.07

  

 Mdz duration (day)

2 [2–3.5]

1.5 [1–1.5]

0.27

  

 Dxd dose (µg/kg/day)

7.1 [na]

7.9 [6–16.7]

1

  

 Dxd duration (day)

2 [na]

2 [1–3]

1

  

Vasoactive drugs

46 (84%)

30 (81%)

0.75

  

Mechanical ventilation

34 (62%)

30 (81%)

0.049

  

SAE

35 (64%)

31 (84%)

0.035

0.21

2.8

[0.66–6.52]

cEEG rhythmic and periodic patterns

 RDA

25 (45%)

23 (62%)

0.11

  

 PDs

8 (15%)

15 (41%)

0.005

0.02

3.82

[1.27–11.49]

 PDs burden

[0–46%]

[0–60%]

0.008

  

cEEG background

 Reactivity

48 (87%)

26 (70%)

0.044

  

 Sleep

36 (65%)

19 (51%)

0.17

  

 PDR

52 (95%)

30 (81%)

0.042

  

 High grade mSynek scale

11 (20%)

22 (60%)

< 0.001

  

 SB/suppressed

0 (0%)

3 (8%)

0.06

  

 Discontinuous/Low voltage

4 (7%)

7 (19%)

0.09

  
  1. Data are presented as median [interquartile range] or count (percentage)
  2. APACHE-II Acute physiological and chronic health evaluation, Non-neuro APACHE-II APACHE II minus the GCS component, The APACHE-II > 23 represents the prevalence of APACHE scores above the median value of the study population (i.e., 22). CAM-ICU Confusion Assessment Method for the ICU, CRS-R The Coma Recovery Scale-Revised, Mdz Midazolam, Dxd Dexmedetomidine, SAE Sepsis-associated encephalopathy, ICU Intensive care unit, (c)EEG (continuous) electroencephalogram, RDA Rhythmic delta activity, PD Periodic discharges, PDR Posterior dominant rhythm, High grade mSynek scale High grade modified Synek scale defined as grade of III or more (please refer to Additional file 1: Table S1), SB Suppression-Burst, Discontinuous/Low Voltage/SB/suppressed background: please refer to text for definition. Mann–Whitney, Fisher's exact and χ2 tests were used to analyze differences in variables between groups, as appropriate. Multivariate logistic regression was performed. p < 0.05 was considered statistically significant and marked in bold in the table. After correction for disease severity, age and the presence of SAE, PDs occurrence was statistically associated with an unfavorable outcome (p = 0.02)