
One of our Bassets had one recently, within a short time his entire leather was full, rarely shook his head, it must have been weighty & uncomfortable. It was drained once but believe it was beginning to refill later the same day, also tried compression bandaging but due to size & weight couldn't keep the ear up without the tension throttling him.
Although discussed the op, it still took me by surprise with the raw open incision which continued to drip for sometime, also wasn't expecting the swelling & took him back 48 hours later to be told all was normal but given Anti biotics as a precaution. Stitches around the incision came out after three weeks , others stayed for up to 6, his vet was adamant they would stay until he was happy with the ear & often they are removed too soon. It's taken some months to recover, cost of the op - with out checking - was less than £130 with 7 free weekly visits.
I know head shaking is a major cause but do believe in his case due to our Bassets jousting & ragging various body parts including ears when playing.