Cardiothoracic & vascular anesthesia

Comparative effects of variable versus conventional volume-controlled one-lung ventilation on gas exchange and respiratory system mechanics in thoracic surgery patients: A randomized controlled clinical trial

J Clin AnesthPublished Randomised controlled trial

Authors' conclusion

In thoracic surgery patients under OLV, V-VCV did not improve oxygenation or respiratory system mechanics compared to C-VCV.

Study context

Population
Patients undergoing thoracic surgery under one-lung ventilation (OLV)75 completed and analysed
Participants
78 patients
Comparison
Variable vs conventional volume-controlled OLV
  • V-VCVn = 39
  • Conventional volume-controlled ventilation (C-VCV)n = 39reference
Primary endpoint
Pressure of arterial oxygen (PaO2)
Follow-up
20 min after the start of OLV

Primary result

As reported in the abstract

Mean difference

1.3

95% CI −8.2 to 5.5

P = 0.700

By group

V-VCV vs C-VCV
mean difference 1.3 (95% CI −8.2 to 5.5); P = 0.700

Further findings

Intraoperative gas exchange, rescue maneuvers for desaturation and hypercapnia, hospital free days at day 30

Did not differ between groups

Safety

Intraoperative adverse events, postoperative pulmonary and extra-pulmonary complications

Did not differ between groups

Original publication

Comparative effects of variable versus conventional volume-controlled one-lung ventilation on gas exchange and respiratory system mechanics in thoracic surgery patients: A randomized controlled clinical trial. J Clin Anesth. Published 6 April 2024. doi:10.1016/j.jclinane.2024.111444

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