<s>[INST] My uncle has just had his 2nd triple bypass and on his 2nd day of recovery he went into cardiac arrest twice! the firs time he lost o2 for 10 mins, they have him resting now for 24 hours. He is stable at this time but his echo showed changes with an ef of 50% to an ef of 25%. I was wondering what were the chances of his ef increasing and how could we make that happen? [/INST] Hello, After going through your medical query I understand your concern and I would like to tell you that chances of increasing EF is less and life expectancy won't be good. Be careful with all his meds and pro n cons with Low EF. Kindly have a word with your treating Cardiologist and cardiothoracic surgeon for better in view. Hope I have answered your query. Let me know if I can assist you further.  </s>