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Table 1 Characteristics and outcomes of the study patients (N = 137)

From: Predicting contrast-induced nephropathy after CT pulmonary angiography in the critically ill: a retrospective cohort study

Variables Median (interquartile range) unless stated otherwise
Age, years 53 (43–69)
Male, no. (%) 97 (70.8)
Comorbidities, no. (%):
 - Diabetes mellitus 41 (30)
 - Cancer 28 (20)
 - Chronic lung disease 33 (24)
 - Congestive heart failure 56 (41)
Baseline organ support therapy, no. (%):
 - Inotropes 54 (39)
 - Mechanical ventilation 68 (50)
 - Intra-aortic balloon pump 2 (2)
Baseline physical signs, no. (%):
 - Tachycardia (> 110 bpm) 68 (50)
 - Hypotension (< 100 mmHg) 70 (51)
 - Tachypnoea (> 30 breaths/min) 77 (56)
 - Hypothermia (< 36C°) 19 (14)
 - Altered mental state 38 (28)
 - Hypoxaemia (SaO2 < 90%) 104 (76)
 Haemoglobin concentrations, d/L 110 (89–131)
 Haematocrit, % 33 (27–40)
 Plasma creatinine conc., μmol/L 89 (64–137)
 CIN risk score 9 (4–16)
 Pulmonary Embolism Severity Index 144 (99–190)
 APACHE II score 23 (17–31)
Outcomes:
 Maximum creatinine conc. within 48 h after CTPA, μmol/L 92 (65–178)
 CIN within 48 h of CTPA, no. (%) 56 (41)
 Required subsequent dialysis, no. (%) 35 (26)
 Acute pulmonary embolism (PE), no. (%) 21 (15)
 Bilateral PE, no. (%) 14 (10)
 Pneumonia on CTPA, no. (%) 66 (48)
 Hospital mortality, no. (%) 69 (50)
 Length of ICU stay, days 6 (3–16)
 Length of hospital stay, days 13 (7–26)
 CIN prediction score > 10: PPV for CIN, % 75.5
 CIN prediction score > 10: NPV for CIN, % 86.6
 CIN prediction score > 12: PPV for dialysis, % 58.2
 CIN prediction score > 12: NPV for dialysis, % 94.0
  1. APACHE Acute Physiology and Chronic Health Evaluation, CTPA CT pulmonary angiography, CIN contrast-induced nephropathy: defined as an elevation in plasma creatinine concentrations > 44.2μmol/l (or 0.5 mg/dl) within 48 h after CTPA, ICU intensive care unit, NPV negative predictive value, PPV positive predictive value, SaO 2 arterial oxygen saturation