In medicine,<unk> refers to the removal or repositioning of any structure compressing any other structure. Common examples include decompressive craniectomy (removal of part of the skull to relieve pressure on the brain), and spinal<unk> to relieve pressure on nerve roots.
Decompression 
Perfusion
Infiltration analgesia
Corticotomy
Massage
Infusion therapy
Diaphragm pacing
Rewarming shock