In this study, researchers are exploring the effects of a sedative medicine called **dexmedetomidine** combined with two different types of anesthesia, **desflurane** and **propofol**, during a lung surgery known as a **lobectomy**. This surgery often requires using just one lung for breathing while the other lung is operated on. This can sometimes cause complications like lung problems after surgery. The goal is to find out which combination of medicines helps patients recover faster and with fewer side effects like nausea or confusion. **Key Points for Participants**: - The study is for adults over 18 who are having planned lung surgery and meet certain health conditions. - Participants will receive either dexmedetomidine with desflurane or propofol during surgery. - It's important to be aware of potential risks such as breathing issues or increased heart rates; some people might not qualify if they have specific health conditions. This research aims to improve recovery times and reduce side effects from anesthesia in people undergoing lung surgery.