One of the most widely recognized factors in capsule contracture is blood around an implant, and the only reliable way to clear all of the blood from around an implant is to open the pocket and physically remove all of the blood and wash the tissues. Depending upon when the bleeding actually occurred and how long the blood has been there, this actually may be the only reliable way to get the blood out anyhow as if it has been there for more than a day or so, it will be clotted and firm and very hard to get out simply through a drain. Once the blood is removed through an open incision, THEN a drain might be placed, but only after open removal of the blood. In addition, this gives the surgeon a chance to inspect the pocket and see if a source of the bleeding can be identified and treated. Unless your surgeon is considering placing the drain without making an incision, which is very risky from the standpoint of puncturing or damaging the implant, he will have to open the pocket anyway to place the drain. Why not do things the right way and evacuate the blood completely?
The treatment of a hematoma is not placement of a drain. The treatment is re-exploration of the breast implant pocket, control of the source of bleeding, irrigation of the surgical site, replacement of the implant and the possible insertion of a drain.