Intra-operative protective mechanical ventilation in lung transplantation: a randomised, controlled trial

Area of Science:

• Cardiology
• Pulmonology
• Critical Care Medicine

Background:

• Primary graft dysfunction (PGD) affects up to 25% of lung transplant recipients.
• Ventilator-induced lung injury (VILI) is a significant contributor to PGD.
• Optimizing ventilation strategies during lung transplantation is crucial for improving patient outcomes.

Purpose of the Study:

• To evaluate the feasibility, safety, and efficacy of an open-lung protective ventilation strategy.
• To reduce ventilator-induced lung injury during lung transplantation surgery.
• To compare an alveolar recruitment strategy with conventional ventilation in lung transplant recipients.

Main Methods:

• Adult patients undergoing bilateral sequential lung transplantation were randomized into two groups: control (volume-controlled ventilation) and alveolar recruitment (pressure-controlled ventilation with recruitment maneuvers).
• Ventilation strategies were applied from reperfusion of the first allograft throughout surgery.
• PaO2/FiO2 ratios and inflammatory markers were monitored, with the primary endpoint being the PaO2/FiO2 ratio at 24 hours post-reperfusion.

Main Results:

• The primary outcome (PaO2/FiO2 ratio at 24 hours) did not differ significantly between groups (340 vs. 404).
• The alveolar recruitment group showed significantly better PaO2/FiO2 ratios at the end of surgery (402 vs. 308).
• Patients in the alveolar recruitment group had a shorter median time to tracheal extubation (15 vs. 18 hours).

Conclusions:

• An open-lung protective ventilation strategy is feasible and safe for lung transplantation.
• This strategy leads to favorable ventilation parameters and reduced extubation times.
• Further research may explore long-term outcomes associated with this ventilation approach.