So my dad had CABG surgery on March 9, 2017, and everything seemed fine while he was in the hospital and ICU, even when we got home. But during a routine check-up on March 22, some of his meds were stopped. A couple of days later, he developed a fever around 99-100. We told our doctor, and he suggested blood and urine cultures. The urine culture came back positive with two bacteria, and one was really resistant to antibiotics. The surgeon prescribed Linospan 600 and Furadantin 200, twice and thrice daily, but the fever didn't go away. Another culture at the hospital showed negative for infection in his urine, yet his fever continued around 99-99.5. After a week, another urine culture was still negative. We tried stopping his Combiflame, and the fever went away for a couple of days, but then it returned, and we had to start Combiflame again. Why is his fever persisting despite all these medications and negative test results? Could it be something other than an infection, or are we missing something important? Any advice on what we should do next?

Answered by 1 Apollo Doctors

Dr Ranjith Darla

General Practitioner

MBBS
3+ Yrs

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It seems like your dad is experiencing recurrent fever despite antibiotic treatment for a positive urine culture. Since the urine culture has come back negative on subsequent tests, it is important to consider other possible causes for the fever. One common cause could be a post-operative infection related to the CABG surgery. In such cases, broad-spectrum antibiotics may be needed. I would recommend discussing with your doctor about the possibility of adding a different antibiotic to cover for other potential infections. In the meantime, to help manage the fever, you can continue giving Combiflam as prescribed by your doctor. Additionally, make sure your dad stays well-hydrated and gets plenty of rest. If the fever persists or worsens, further evaluation may be needed to determine the underlying cause.

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Answered 04/07/2025

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