Table 1.
Characteristics of the population studied
| Characteristics | N = 40 |
|---|---|
| Age (years) | 75 [57–92] |
| Male sex | 17 (43) |
| Weight (kg) | 69 [51–86] |
| Height (cm) | 166 [156–177] |
| BMI (kg m−2) | 25 [20–30] |
| Surgery | |
| Orthopaedic surgery | 26 (65) |
| General surgery | 14 (35) |
| Sepsis | 12 (30) |
| Antecedent | |
| ASA score | 2.0 [1.6–2.8] |
| Atrial fibrillation | 5 (13) |
| Cardiac failure | 9 (23) |
| COPD | 4 (10) |
| Treatment prior surgery | |
| Beta blockers | 12 (30) |
| Other antiarrhythmic agents | 5 (13) |
| Ventilation | |
| Tidal volume (ml kg−1) | 6.6 [4.9–8.4] |
| PEEP (cmH20) | 5 [4–7] |
| FiO2 (%) | 58 [50–70] |
| EtCO2 (mmHg) | 31 [28–34] |
| SpO2 (%) | 99 [97–100] |
| Anaesthesia protocol | |
| Sufentanil | 39 (98) |
| Propofol TIVA | 5 (13) |
| Halogenated | 35 (88) |
| Curare | 16 (40) |
| Regional anaesthesia | 14 (35) |
| Vasoconstrictors | |
| Vasoconstritor use | 11 (28) |
| Phenylephrine (µg kg−1 min−1) | 0.2 [0.0–0.3] |
Data are expressed as median and [25th–75th] or as number and proportion of patients (n = 40). Body mass index (BMI), chronic obstructive pulmonary disease (COPD), positive end-expiratory pressure (PEEP), fraction of inspired oxygen (FiO2), end-tidal carbon dioxide (EtCO2), arterial oxygen partial pressure (PaO2), arterial carbon dioxide partial pressure (PaCO2), pulse oxygen saturation (SpO2), total intravenous anaesthesia (TIVA), vasoconstrictor (VC)