CHQ: SUBJECT: Central venous catheters - ports
  MESSAGE: Hello, I was wondering about the Central venous catheters - ports and how they work. My grandma takes dialysis treatments and hers blew a couple days ago. Both of her arms swelled immediately. They were asked to do another one,  but said it was ok. After another treatment today both arms turned purple. I want to know, if you can tell me, how dangerous is it if they are using the port and it is blown? Can she bleed out or throw blood clots?
Summary: What are the complication of central venous catheters?