National And Kapodistrian University Of Athens

This study is testing a new way to treat moderate-to-severe hemorrhoids by combining a simple stitch lift with a laser procedure. About 100 adults will receive the treatment and be followed for a year to see how quickly they stop needing pain medication and get relief from bleedi…

This study tests a procedure that uses heat (radiofrequency ablation) plus bone stabilization to treat cancer that has spread to the spine. About 16 people with one to three active spine tumors will get the treatment. Success is measured by PET scans that show whether the tumor's…

This study compares two surgical methods to treat peri-implantitis, a gum infection around dental implants. One method smooths the implant surface, the other uses an air-abrasive device to clean it. Researchers will check which approach works better at controlling infection and p…

This study tests whether injecting a sugar solution (prolotherapy) into acupuncture points can reduce chronic low back pain better than a standard numbing injection alone. Sixty adults with long-term back pain will receive up to 15 injections over three sessions. Researchers will…

This study tests if injecting a sugar (dextrose) solution around knee nerves can reduce chronic pain from knee osteoarthritis better than a numbing medicine alone. About 60 adults with knee arthritis will receive a series of three injections. Researchers will measure pain levels …

This study compares two weight-loss medications, tirzepatide and liraglutide, in 72 adults with severe obesity (BMI 40 or higher). Researchers will measure changes in bone health and body composition over 6 months. The goal is to understand if these drugs affect bone differently …

This study compares two common anesthesia gases, sevoflurane and desflurane, to see which one keeps lungs working better during robotic abdominal surgery. About 50 adults having elective robotic surgery will take part. Researchers will measure airway pressure at several points du…

This study compares five different non-surgical gum disease treatments to see how each affects bacteria entering the bloodstream and body-wide inflammation. Researchers will measure blood markers before and after treatment in 75 adults with severe periodontitis. The goal is to fi…

This study tests whether a special software (HPI and AFM) can help doctors prevent low blood pressure in adults having surgery with general anesthesia. About 100 participants will be randomly assigned to either standard care or care guided by the software. The goal is to see if t…

This study looks at whether a blood test marker called Monocyte Distribution Width (MDW) can help predict serious complications and survival in older adults with hip fractures. About 100 patients aged 65 and older will have their blood tested at the hospital. Researchers will tra…

This study follows 2000 people with early-stage, hormone-positive breast cancer to see how doctors decide on treatments and how patients fare over 10 years. It compares those who get a special gene test (EndoPredict) with those who don't. The goal is to learn which treatments wor…

This study looks at whether it is safe to use the ulnar artery in the same arm as a blocked radial artery for heart procedures like angiography or angioplasty. About 127 adults with a blocked radial artery will be observed to see if this approach causes serious complications or a…

This study compares two ways to remove infection from the tip of a tooth root: using a standard rotary bur or a piezoelectric device. Researchers want to see which method leads to better bone healing. About 130 adults who need this surgery will be followed for at least a year wit…

This study follows 100 adults who have surgery for a perianal fistula, a painful tunnel near the anus. Researchers will check healing, return of symptoms, and quality of life for one year after the operation. The goal is to learn which surgical methods work best for long-term rec…