A smoother approach to emergence could be the reduction of the depth of anaesthesia well before the end of surgery, promoting the early onset of spontaneous breathing. Particularly after long cases, the reduction in the depth of anaesthesia may be initiated earlier rather than later. Consequently, spontaneous breathing may also return earlier but is likely to be insufficient to maintain proper arterial oxygenation. To prevent hypoxaemia during this phase, adequate support for the spontaneous breathing effort may be beneficial6. It has been stated that spontaneous breathing during general anaesthesia is associated with hypercapnic acidosis and an increased work of breathing in both healthy patients and those with known comorbidities. In order to smooth this process, assisted ventilation modes have been introduced in anaesthesia machines. Pressure support ventilation (PSV) is now commonly available and is intended to support spontaneous breathing while reducing patient-ventilator dysynchrony6. Beyond this, PSV has also been shown to provide more effective gas exchange compared to unassisted CPAP ventilation during anaesthesia with a laryngeal mask airway (LMA). PSV supports the achievement of optimal tidal volumes and, in comparison to unassisted spontaneous breathing, increases minute volume, lowers etCO2 and improves oxygenation6, 7. In addition, PSV-supported intraoperative spontaneous breathing was found to reduce LMA removal time, emergence time and even Propofol consumption6.