## Question
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?

## Expert Summary
What are the complication of central venous catheters?