My mom 71 years suffering from achalasia cardia 2, she's vomiting food, liquid whatever she takes since march19. Her bp downed by 80/50, weight - 49 kg. Endoscopy done, les tight report came. Manometry done. While contacted in apollo for surgery, their anaesthetist referred to cardiology Dr. He advised to do dobatamn stress echo without which he can't give fitness certificate. Echo people saying that dobatamn injection is slightly risky as she is very weak. In this situation what to do, what's your advise sir?