module 5 degenerative Flashcards
- Protrusion of a loop of bowel through a small opening, usually in the abdominal wall.
- Popularly referred to as a “rupture”
- occurs because of an anatomic weakness
- Most common are abdominal, inguinal, femoral, umbilical
- Femoral and umbilical herniations occur in both sexes
HERNIA
- Common in men and occurs when a bowel loop protrudes through weakness in the inguinal ring and may descend downward into the scrotum.
INGUINAL HERNIA
if a herniated loop of bowel can be pushed back into the abdominal cavity
REDUCIBLE HERNIA
if it becomes stuck and cannot be reduced
INCARCERATED HERNIA
if the constriction through which the bowel loop has passed is tight enough to cut off blood supply to the bowe
STRANGULATED HERNIA
weakness of the esophageal hiatus that permits some portions of the stomach to herniate into the thoracic cavity
HIATAL HERNIA
occurs when a portion of the stomach and gastroesophageal junction are both situated above the diaphragm. This type of hernia constitutes the outstanding majority (about 99%) of all hiatal hernias.
direct, or sliding, hiatal hernia
- a cause of mechanical bowel obstruction in which a gallstone can erode from the gallbladder and create a fistula to the small bowel
- This leads to an obstruction, usually when the gallstone reaches the ileocecal valve.
- Radiographic signs of this include air and fluid levels or air in the biliary tree
- clinical signs and symptoms include abdominal distention, abdominal cramps, and vomiting, sometimes progressing to bloody stools
GALLSTONE ILEUS
- a twisting of a bowel loop about its mesenteric base, usually at either the sigmoid or ileocecal junction
- Surgical untwisting and resection are necessary to prevent necrosis and perforation of the bowel caused by a lack of blood supply
VOLVULUS
- Occurs when a segment of bowel, constricted by peristalsis, telescopes into a distal segment, and is driven further into the distal bowel by peristalsis.
- Radiographically, the area of ____ may appear as a “coiled spring.”
INTUSSUSCEPTION
- Adynamic ileus
- Failure of bowel peristalsis , often seen after abdominal surgery, which may result in bowel obstruction
- generally lasts no longer than 3 days with proper medical treatment
- Signs and symptoms include distention of the abdomen, abdominal cramping, and vomiting
PARALYTIC ILEUS