摘要
Sir,Drains are traditionally used in a variety of surgical procedures;[1,2]although there is limited evidence of their usefulness.[3]Drains are classified based on various characteristics:as open or closed systems,as active versus passive,as prophylactic versus therapeutic;or by composition(e.g.polyurethane,silicone,or rubber).[2,4]Closed vacuum drains apply negative suction(60-80 kPa)in a sealed environment.[5]Drains are often secured using a single suture or adhesive tape to prevent inadvertent removal.Complications from drains include pain,hemorrhage,drain entrapment,and retrograde bacterial migration that can result in postoperative infections.[1,2]
