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Intestinal obstruction can be the sequel to either mechanical or functional causes. Mechanical obstruction occurs due to physical blockage of the intestinal lumen whereas functional obstruction results from a decrease or inhibition of intestinal motility due to loss of smooth muscle contraction. (Brown et. al, 2007).
Intestinal obstruction can be the sequel to either mechanical or functional causes. Mechanical obstruction occurs due to physical blockage of the intestinal lumen whereas functional obstruction results from a decrease or inhibition of intestinal motility due to loss of smooth muscle contraction. (Brown et. al, 2007).
===== Physical =====
===== Physical =====
Physical obstruction of the intestine, either acute or chronic, can occur in all species of animals. Acute obstruction usually involves the upper or middle small intestine whereas chronic obstruction typically occurs in the distal small intestine or large intestine. Causes of obstruction can be divided into three main categories: intraluminal, intramural, or extrinsic. Intraluminal include food impaction and foreign bodies, intramural include neoplasia and extrinsic include adhesions, neoplasia and prostate enlargement.
Physical obstruction of the intestine, either acute or chronic, can occur in all species of animals. Acute obstruction usually involves the upper or middle small intestine whereas chronic obstruction typically occurs in the distal small intestine or large intestine. Causes of obstruction can be divided into three main categories: intraluminal, intramural, or extrinsic. Intraluminal causes include food impaction and foreign bodies, intramural causes include neoplasia and extrinsic causes include adhesions, neoplasia and prostate enlargement.
====== Enteroliths [picture] ======
====== Enteroliths [picture] ======
====== Foreign Bodies ======
====== Foreign Bodies ======
====== Impaction ======
====== Impaction ======
====== Extrinsic ======
====== Extrinsic ======
Neoplasia, Adhesions, Prostate enlargement
Neoplasia, Adhesions, Prostate enlargement
===== Functional =====
===== Functional =====
====== Megacolon ======
====== Megacolon ======