Introduction. As time passes, many new diseases and medical conditions will inevitably be discovered that could have a huge impact on more than a few lives. However, with our current medical technologies and research and development teams around the world, we will also find new ways to overcome many health problems that will arise or have already arisen. Some health conditions can be treated using medications and therapies. Some others can be cured simply by changing your lifestyle. But for some diseases and conditions, there is currently no better treatment known to men than to undergo surgical procedures. Similar to drug treatments, surgical procedures are not 100% safe. But compared to drugs, most people will be more terrified of surgery, and it's not hard to see why. The idea of ​​passing out and going under the knife will naturally push both the patient and the doctor to try to avoid surgery as much as possible. Before any doctor decides to undergo surgery, he will have to weigh the pros and cons of the said surgery on the patient's well-being. Any surgery will have its own level of risk depending on the degree of invasiveness and the organ involved. However, even the safest and most minimally invasive surgery can present some complications later, avoidable or not. Patients undergoing surgery will mostly be given sedatives or anesthesia to make them unconscious. It is questionable whether anesthesia plays an important role in contributing to postoperative complications after surgery#. Complications could be minor or they could be major and require immediate medical attention. There are some common complications that patients are more likely to have after surgery and... middle of paper... to remain unconscious. Profound hypothermia and both hyperglycemia and hypoglycemia can lead to unconsciousness. Ultimately, it is necessary to evaluate the patient's neurological appearance to ensure that no abnormality has developed during or after surgery that could be the reason for this problem. Increased intracranial pressure or diffuse encephalopathy due to intraoperative cerebral hypoxia may occur during neurosurgery. Conclusion. No matter how good the team of surgeons and doctors were or how perfectly smooth the surgery went, there are still chances of some complications occurring. The fact that every individual is different makes it more difficult to fully guarantee that the patient will not have any unwanted problems once the surgery is finished. However, studies and research regarding this topic would be of great help in predicting and managing postoperative complications.