Conclusions
The PP has been found to enhance the oxygenation index and increase the
10-day survival rate of critically ill COVID-19 patients receiving
invasive mechanical ventilation in ICU. The frequency of PP correlates
with a more significant improvement in the oxygenation index. However,
it is worth noting that the effectiveness of PP may be reduced in
patients with lower absolute lymphocyte values, while earlier and longer
PP may yield better outcomes. Despite the challenges associated with
implementing PP in patients on invasive mechanical ventilation, it is
recommended to be performed whenever feasible, provided there are no
clear contraindications to invasive mechanical ventilation.