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Table 1 Main characteristics of patients (n = 56)

From: Changes in dynamic arterial elastance induced by volume expansion and vasopressor in the operating room: a prospective bicentre study

Characteristics Overall
N = 56
Bordeaux
N = 43
Clermont
N = 13
Age (years) 57 ± 13 54 ± 14 60 ± 11
Sex, M/F (n) 21/35 16/27 5/8
Height (cm) 168 ± 9 169 ± 9 169 ± 11
Weight (kg) 72 ± 15 73 ± 15 67 ± 16
Ideal body weight (kg) 62 ± 10 62 ± 9 63 ± 11
Tidal volume (ml) 455 ± 66 441 ± 55 500 ± 79
Tidal volume (ml/kg of ideal body weight) 7.4 ± 0.8 7.2 ± 0.7 8.0 ± 0.7
Respiratory rate (cycles/min) 13 ± 1 13 ± 1 12 ± 1
Positive end-expiratory pressure (cmH2O) 5 [5–6] 5 [5–6] 6 [5–8]
FIO2 (%) 45 [40–50] 45 [40–50] 45 [40–45]
Driving pressure (cmH2O) 11 ± 3 11 ± 3 8 ± 2
ASA status I/II/III 7/16/33 5/9/29 2/7/4
Surgery (n)
 Neurosurgery 43 43 0
 Abdominal surgery 13 0 13
Comorbidities
 Arterial hypertension 17 16 1
 Smoking 5 4 1
 Diabetes 4 4 0
 Stroke 2 2 0
Medications    
 ACE inhibitors 9 7 2
 Statins 5 5 0
 Calcium blockers 5 4 1
 ARB 5 4 1
 Antidiabetic drug 3 3 0
 Beta-blockers 2 2 0
  1. Values are mean ± SD, or median [percentile 25–75] or number (n)
  2. FIO2 inspired oxygen fraction, ACE angiotensin-converting enzyme, ARB angiotensin II receptor blocker