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Table 4 Clinical characteristics of the patients interviewed according to memory of the intensive care unit

From: Application of the Italian version of the Intensive Care Unit Memory tool in the clinical setting

  Clear recollection of ICU stay?  
Parameter Yes No P
Number of patients 25 62 -
Male sex 14 (56%) 37 (60%) 0.468
Age (years; mean [range]) 68.1 ± 13.1 (20–87) 65.5 ± 15.0 (25–89) 0.450
Unscheduled ICU admission 10 (40%) 40 (65%) 0.032
APACHE II score 15 (9–18) 14 (12–17) 0.903
SAPS II score 34 (27–37) 35 (29–42) 0.487
Mean daily dose of morphine (mg) 19 ± 11 48 ± 131 0.309
No of patients receiving    
   Propofol 2 (8%) 18 (29%) 0.028
   Benzodiazepine 8 (32%) 33 (53%) 0.059
   Neuroleptics 1 (4%) 14 (23%) 0.031
Duration (days) of    
   Stay in ICU 6.2± 7.0 9.5± 12.3 0.027
   Stay in ICU range 3–37 3–72  
   Mechanical ventilation (mean [range]) 2.5 ± 1.9 (0–8) 7.0 ± 11.4 (0–64) 0.042
Number of    
   Factual events 8 (7–9) 7 (5–8) 0.018
   Feelings 2 (0–3) 1 (1–2) 0.740
   Delusional memories 0 (0–1) 1 (0–1) 0.036
  1. Severity scores Acute Physiology and Chronic Health Evaluation (APACHE) II and Simplified Acute Physiology Score (SAPS) II, and the number of factual, feelings and delusional memories are reported as median (interquartile range). Statistically significant findings are highlighted in bold. ICU, intensive care unit.