University Of Sao Paulo General Hospital

This study compares two methods of preserving livers from deceased donors before transplant: a machine that pumps oxygenated cold fluid through the liver (hypothermic machine perfusion) versus the standard ice-cooled storage. Forty adult liver transplant patients will be randomly…

This study tests whether temporarily stopping methotrexate for 2 weeks after receiving a pneumonia vaccine (PCV20) helps the vaccine work better in adults with autoimmune rheumatic diseases like rheumatoid arthritis or lupus. About 192 participants with stable, low disease activi…

This study looks at whether the inhaled drug iloprost can safely lower blood pressure in the lungs and improve exercise ability in adults with severe COPD. Fifteen participants will take iloprost 6 to 9 times daily for 12 weeks, with tests before and after treatment. There is no …

This study tests whether a single dose of amoxicillin before a simple tooth extraction can prevent infections in people with autoimmune rheumatic diseases who are on immune-suppressing medications. Researchers will compare infection rates between those who get the antibiotic and …

This study tests whether taking acyclovir daily can prevent herpes simplex outbreaks in people with autoimmune rheumatic diseases like lupus or rheumatoid arthritis. 62 participants will receive either acyclovir or a placebo for 12 months and be monitored for 24 months total. The…

This study tests if low-intensity focused ultrasound (LIFU) can safely reduce tremors and improve quality of life in people with essential tremor. Twenty adults with hard-to-treat tremors will receive both real LIFU and a fake (sham) treatment in separate sessions to compare effe…

This study follows 32 adults with pulmonary arterial hypertension (PAH) whose doctors decide to switch them from inhaled iloprost (taken several times a day) to oral selexipag (a pill). Researchers will use questionnaires to see if the switch improves quality of life, treatment s…

This study will test a smartphone app called CONEMO in over 12,000 adults visiting primary care clinics. The app uses cognitive behavioral therapy techniques to help reduce symptoms of depression, anxiety, and insomnia. Participants will use the app on their own phones or tablets…

This study looks at a simple idea: during a liver transplant, the first blood that flows into the new liver may contain harmful substances. By discarding that blood before connecting the liver to the patient's circulation, doctors hope to reduce heart, kidney, and liver problems.…

This study will follow 400 people who come to the emergency room with sudden vertigo or dizziness that might be caused by a mini-stroke in the back of the brain. Researchers will track their symptoms, treatments, and outcomes over a year to learn how to better diagnose and manage…

This study will collect information from 1,000 newborns with esophageal atresia (a birth defect where the esophagus doesn't form correctly) across 72 hospitals in Brazil. Researchers aim to understand what factors lead to complications and death, and to find ways to improve treat…

This study uses a short questionnaire to learn where patients with pulmonary hypertension and their caregivers search for health information, what topics they look for, how satisfied they are, and which sources they trust most. Researchers will enroll 100 adults in Brazil. The go…