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99.4 is on the high side, but it may not be a fever, just your normal body temperature.
You should not have a fever after a knee replacement. fever can indicate infection so I suggest you consult your doctor.
1. you can get a fever 2. your white cell count goes up
circulating proteins called Pyrogens can reset this themostat and raise body temperature "fever"
A pyrogen is a bacterium that can produce fever as one of its clinical signs of infection. Sterile means there are no bacteria present on a surface, while pyrogen-free would indicate there are no bacteria present that will cause a fever.
Three signs that you need to seek medical care are if you have been sick for a long period of time and are not getting any better, have a fever that isn't going away with a fever reducer, or if you have an infection that is associated with a fever. You should seek medical care for all of these things.
Adults usually do not get a fever with a cold, it is more likely to be the flu, sinus infection, or another infection when there is a high fever and cold symptoms. There may be a low grade fever of 99-100F in adults with a cold. Higher fevers usually indicate a more serious infection, unless in children, who can have higher fevers than adults with the common cold and require examination by a health care professional to evaluate the fever and symptoms.
High levels of BUN may indicate kidney disease or failure; blockage of the urinary tract by a kidney stone or tumor; a heart attack or congestive heart failure; dehydration; fever; shock; or bleeding in the digestive tract.
The vomiting was accompanied by a fever, but not diarrhea, which may indicate that I had a stomach flu instead of food poisoning.Nearly half of the wedding guests did not indicate their choice for dinner on the RSVP, so we had to call each one personally and ask them what they wanted to eat.A old person indicated the time for a woman when she asked.He will indicate when he wants to stop.I did not indicate whether they should use pen or pencil.The answers to the test would indicate that the students had studied.
The above are symptoms. They could indicate anything from a mild cold to a terminal illness. This is why you should always seek a doctors opinion.