Table 1

Patient demographic and clinical characteristics (safety population)



Degree of renal impairment



Characteristic
Normal/mild
Moderate/severe

Number of patients treated
10
30
Reason for ICU admittance


     Cardiac postsurgical
4 (40%)
7 (23%)
     General postsurgical
0
10 (33%)
     Medical
6 (60%)
13 (44%)
          Respiratory
4 (40%)
8 (27%)
          Sepsis
0
3 (10%)
          Cardiovascular
1 (10%)
1 (3%)
          Trauma
1 (10%)
0
          Haematological
0
1 (3%)
Mean SAPS II (range)
41.0 (31–57)
53.2 (16–91)
Mean CLcr (ml/min) at screening (range)
62.9 (44–84)
13.7 (0–49)
Mean renal dysfunction score at screening(range)
2.3 (0–3)
4.3 (1–5)
Renal replacement therapy
0
14 (47%)
Mean baseline SAS score (range)
2.9 (2–4)
2.4 (2–4)
Mean baseline PI score (range)
1.2 (1–2)
1.1 (1–3)
Mean baseline RR (breaths/min; range)
15.6 (10–22)
14.7 (0–39)
Mean baseline MAP (mmHg; range)
79.0 (53–105)
78.3 (56–135)
Mean baseline HR (beats/min; range)
85.6 (61–126)
94.7 (62–128)
Mean age (years; range)
68.6 (54–78)
65.7 (31–81)
Sex


     Male
9 (90%)
22 (73%)
     Female
1 (10%)
8 (27%)
Mean height (cm; range)
173.2 (157–180)
167.5 (120–188)
Mean weight (kg; range)
79.6 (68–96)
75.6 (38.3–110)

Renal function was assessed by estimating the patient's creatinine clearance (CLcr), as described under Methods. Normal renal function/mild renal impairment was defined as an estimated CLcr ≥ 50 ml/min. Moderate/severe renal impairment was defined as an estimated CLcr <50 ml/min. Logistic Organ Dysfunction Score [18]. HR, heart rate; ICU, intensive care unit; MAP, mean arterial pressure; PI, Pain Intensity (scale); RR, respiratory rate; SAPS, Simplified Acute Physiology Score [23]; SAS, Sedation–Agitation Scale.

Breen et al. Critical Care 2004 8:R21   doi:10.1186/cc2399