Wudhu

Dialysis

Q: I would like to know if when a person is on dialysis (haemodialysis) where your blood comes out goes into a machine gets filtered an returns to your body. Does this break your wudhu?

Pus flowing out of the wound

Q: I have a graze on my front private part, a bit of skin came off. There is now a build up of water\pus there. The water\pus stayed within the wound and I prayed Asr and Maghrib with the same wudu. I prayed Esha late and when I checked the wound I noticed the water/pus had flowed beyond the wound. I can't be sure if it soaked through my underwear and onto my trousers. I just changed my underwear but wore same trousers to pray. I can't be fully sure it soaked through. I just changed them due to precaution. I have these doubts always.