TEAS for Variceal Bleeding Endoscopy in Cirrhosis

The goal of this clinical trial is to learn if a non-invasive electrical therapy (called TEAS) applied to specific points on the skin can help patients with severe liver disease better tolerate emergency stomach scope for serious bleeding. It will also test whether TEAS improves treatment success and recovery. The main questions the study aims to answer are: 1. Does TEAS make the emergency stomach scope procedure easier for patients with liver disease and serious bleeding to tolerate? 2. Does TEAS help control bleeding better and lead to faster recovery? 3. Is TEAS safe to use during this emergency procedure? Researchers will compare three approaches: 1. Real TEAS: Electrical stimulation at specific points on hands/legs before/during the scope. 2. Sham TEAS: Pads placed on the skin but no electrical stimulation. 3. No TEAS: Standard procedure without any pads or stimulation. Participants with acute upper digestive bleeding due to liver disease who need an emergency scope will: 1. Be randomly assigned to one of the three groups. 2. Receive either Real TEAS, Sham TEAS, or No TEAS just before and during their emergency stomach scope procedure. 3. Have their comfort level during the scope measured (like pain, nausea). 4. Have their vital signs (heart rate, blood pressure) monitored closely. 5. Be checked for how well the bleeding was controlled, if bleeding happens again, need for blood transfusions, and time spent in the hospital. Researchers will watch for any side effects from the TEAS pads or the procedure.