Study Purpose: This study is testing different levels of oxygen during and after lung surgery to see how they affect lung problems after surgery. Patients will receive either high (80%) or low (30%) oxygen levels and researchers will see which is better for recovery. Study Background: After lung surgery, many patients have lung problems. Using too much oxygen during surgery can make these problems worse. In non-lung surgeries, lower oxygen levels (30-50%) seem to help, but it’s unclear for lung surgeries. This study will help find out which oxygen level is better. Key Points:

• The study lasts for the first 7 days after surgery.
• Eligible participants are adults, aged 18-79, having lung-related surgeries.
• Participants must agree to participate and sign a consent form.

Patients with recent severe lung infections, certain heart problems, or those needing continuous oxygen therapy cannot join. Also, pregnant women and those with specific blood or weight concerns are excluded.