<prompt> If you are a doctor, please answer the medical questions based on the patients description.hello - my husband has low back pain after aortic valve replacement and the right artery replaced with a vein bypass after artery got crimped during surgery. He is also very winded and finds it laborous to breathe after walking 10 minutes twice a day. Is this to be expected? Thanks  <response>: Hello, First for his shortness of breath, hell need one echocardiography to look for heart function. In the treatment, he should have fluids including water tea milk coffee etc. restriction to minimum and salt restriction as well. Hell also needs Chat Doctor. For low back pain, we need to find the cause first, for that x-ray LS spine APLat is needed, till then he should have calcium and vitamin D supplements like shell HD and enzoflam gel for local application. Also, hot water fomentation etc. will be helpful. 