[Ascaris lumbricoides-caused risk factors for intestinal occlusion and subocclusion].

Objectives: Our objective was to determine risk factors and mortality for partial and complete bowel obstruction caused by Ascaris lumbricoides as well as diagnostic validity of eosinophilia in peripheral blood.

Material And Methods: We studied 50 patients with partial or complete bowel obstruction and expulsion of Ascaris lumbricoides by mouth or anus, as well as 50 patients as controls; no patient had a negative coproparasitoscopic study. The period of study was from January 1995-December 2001 at the General Hospital of Ciudad Valles, San Luis Potosí State, Mexico.