section_path: Definitions
section_name: Definitions
paragraph_text: Definitions
  
  As a general rule, a procedure is considered surgical when it involves cutting of a person's tissues or closure of a previously sustained wound. Other procedures that do not necessarily fall under this rubric, such as angioplasty or endoscopy, may be considered surgery if they involve "common" surgical procedure or settings, such as use of antiseptic measures and sterile fields, sedation / anesthesia, proactive hemostasis, typical surgical instruments, suturing or stapling. All forms of surgery are considered invasive procedures; the so-called "noninvasive surgery" ought to be more appropriately called minimally invasive procedures, which usually refers to a procedure that utilizes natural orifices (e.g. most urological procedures) or does not penetrate the structure being excised (e.g. endoscopic polyp excision, rubber band ligation, laser eye surgery), are percutaneous (e.g. arthroscopy, catheter ablation, angioplasty and valvuloplasty), or to a radiosurgical procedure (e.g. irradiation of a tumor).