What is sbs in-terms of a heart condition. a friend of mine is undergoing a procedure soon, 15 hour operation with 50% change of survival..?

Need more info: SBS is not a standard abbreviation. You may try providing a more detailed narrative. Have a healthy diet, exercise 30 minutes/day, drink plenty of water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. For nutrition: http://www.choosemyplate.gov/. Get Covid vaccine. Wish you good health!

SBS: If you're referring to open heart surgery, SBS refers to a simplified bypass system which allows the cardiac surgeon to operate on the heart without completely paralyzing the heart as is done with a non beating heart bypass where the pump totally performs circulation of blood during surgery. 50% chance of survival sounds particularly dire and must indicate that the patient's condition is very weak