[Theoretical study of the demarcation of the intestinal stoma]. / Estudo teórico da demarcação do estoma intestinal.

The present research focuses on the study of intestinal stoma demarcation. It reviews the historical development of the knowledge produced in this field, considering the advancement implemented in the area of abdominal surgeries which proposes the externalization of intestinal segments. In order to make the demarcation of intestinal stoma, it is necessary to limit the ideal region and to perform it with special pen which will propitiate the making of an anatomically appropriate opening. The stoma should favor the adaptation of devices which do the collection of effluents from the patient's intestines with a minimum of discomfort to the patient. The choice for the localization of the stoma, which is based on scientific principles, is made taking into consideration the structure of the recto-abdominal muscle and the distance from critical areas. At last, the most performed techniques of demarcation of the intestinal stoma are presented, as well as the procedures to be followed by the nurse or by the stoma therapist nurse.