Breathing Patterns Before Lung Surgery and Low Oxygen During One-Lung Ventilation

AI summary

From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.

Adults having chest surgery with one-lung ventilation, who have a body mass index (BMI) above 18.5 and below 30. The study looks at breathing before surgery and the lowest oxygen level during surgery.

Age

18 years or older

Sex

All sexes can join

Main reasons for not taking part

• Cannot use the EIT belt before surgery
• One-lung ventilation was not carried out during surgery

The registry criteria, word for word

What the trial wants to find out

Patients undergoing thoracic surgery with one-lung ventilation (OLV) are prone to hypoxemia, which is primarily attributable to pulmonary ventilation-perfusion (V/Q) mismatch. This study will preoperatively assess the distribution of pulmonary ventilation under spontaneous breathing and intraoperatively record the lowest peripheral oxygen saturation (SpO₂) during OLV. The aim is to investigate the correlation between these two parameters. The findings are expected to facilitate the prediction of hypoxemia in thoracic surgical patients undergoing OLV.

The 2 groups in the trial

• Ventilation-Matched Group

  In this patient group, the dependent lung exhibited better ventilation in the lateral decubitus position during spontaneous breathing than in the supine position.

• Ventilation-Mismatched Group

  In this patient group, ventilation of the dependent lung during spontaneous breathing in the lateral decubitus position was less effective than that in the supine position.