You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is The Sengstaken tube must maintain a pressure of ...... to stop bleeding from varices: and explain in detail?
Sengstaken tube - have 2 balloon 1)Gastric balloon 2)Esophageal balloon It is triple lumen; double ballooned tube. It is used mainly during transpoation of patient. Total amount of air inseed in gastric balloon = 50 + 250 ml (min air) =300 ml Maximum pressure exeed by esophageal balloon = 35-40 mm of Hg Every 12 hrs the esophageal balloon has to be deflated to prevent Ischemia & necrosis of the esophagus.