Risk of Blood-borne Disease Infection

[Cyclohexanol]

Was undergoing a minor surgical procedure that required novocaine injections on the foot to numb the area. While waiting for the area to numb, I had to keep my foot hanging off of the chair. After a bit of waiting, I noticed that there was some blood, semi-dried, on the chair's side around where my foot was hanging. I am not sure if the blood was mine, as I did have an open wound (the injections caused some blood), or if it was another patient's. I am worried about the possibility of my needle injections coming into contact with the blood (if it was another patient's), and what the risk of a blood-borne infection would be. Also how I should proceed/should I be worried?

[mkh9]

It doesn't sound like your foot came in contact with the blood. Most viruses like HIV would die in dried blood. Hepatitis does not but it doesn't sound like you had an exposure if your foot was hanging and not on the chair.
mkh9