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Table 1 Characteristics of patients at ICU admission

From: Association between post-procedural hyperoxia and poor functional outcome after mechanical thrombectomy for ischemic stroke: an observational study

Characteristic pO2 ≤ 120 mmHg N = 214 pO2 > 120 mmHg N = 119 Significance level (p value)
Age in years 71 (60–78) 71 (57–77) 0.49
Male sex 107 (50.0) 55 (46.2) 0.51
Body mass index 27 (25–30) 26 (24–28) 0.02
History of smoking 66 (30.8) 31 (26.1) 0.36
Baseline Rankin    0.95
 0 151 (70.9) 86 (72.3) 0.79
 1 44 (20.7) 19 (16.0) 0.30
 ≥ 2 18 (8.5) 14 (11.8) 0.33
Hypertension 150 (70.1) 75 (63.0) 0.19
Dyslipidemia 96 (44.9) 48 (40.3) 0.42
Diabetes mellitus 61 (28.5) 34 (28.6) 0.99
History of COPDa 19 (8.9) 7 (5.9) 0.33
History of CRFb 12 (5.6) 7 (5.9) 0.92
Atrial fibrillation/flutter 88 (41.1) 45 (37.8) 0.55
Previous stroke 26 (12.1) 12 (10.1) 0.57
Previous antiaggregating therapy 64 (29.9) 39 (32.8) 0.59
Previous anticoagulation therapy 35 (16.4) 18 (15.1) 0.77
Preprocedure GCS 14 (13–15) 14 (12–15) 0.44
Preprocedure NIHSS 18 (12–21) 19 (14–22) 0.09
APACHE 15 (12–19) 16 (12–22) 0.23
Findings in CT scan    0.11
 Without ischemia 80 (38.1) 53 (44.5) 0.25
 Acute ischemic areasc 103 (49.0) 59 (49.6) 0.93
 Areas of ancient stroke 27 (12.9) 7 (5.9) 0.05
Mismatch 70 (50–80) 70 (50–80) 0.43
Etiology of stroke    0.01
 Cardioembolic 96 (44.9) 34 (28.6) < 0.01
 Atherothrombotic 69 (32.2) 48 (40.3) 0.14
 Idiopathic 49 (22.9) 37 (31.1) 0.10
Wake-up stroke 25 (11.7) 12 (10.1) 0.66
Time (min.) onset of symptoms—IAMT 270 (210–367) 300 (220–398) 0.24
Type of intervention    0.85
 Thrombectomy 180 (84.1) 101 (84.9)  
 Thrombectomy + stent 34 (15.9) 18 (15.1)  
Reperfusion degreee    0.18
 Successful reperfusion 201 (93.9) 107 (89.9)  
 Non-successful reperfusion 13 (6.1) 12 (10.1)  
OTI at admissione 97 (45.3) 79 (66.4) < 0.01
MAPf 87 (73–98) 90 (77–103) 0.22
  1. This table value of quantitative variables expressed as median and interquartile range. Values of qualitative variables expressed as n (%)
  2. aChronic obstructive pulmonary disease
  3. bCreatinine clearance < 60 ml/min/1.73 m2
  4. cIncluded signs of acute ischemia and indirect signs of ischemia: hyperdense middle cerebral artery sign, hemispheric sulcus and/or insular cortex effacement, contrast attenuation, ventricular compression
  5. dSuccessful reperfusion included TICI 2b and TICI 3. Non-successful reperfusion includes TICI ≤ 2a
  6. ePatients intubated at ICU admission after IAMT
  7. fMean arterial pressure at ICU admission after IAMT