SR 36 - Hernias Flashcards
What is a hernia?
Protrusion of a peritoneal sac through a musculoponeurotic barrier
A fascial defect
What are precipitating factors for hernias?
Increased intra-abdominal pressure (straining at defication or urination, obseity, pregnancy, ascities, valsavagenic (coughing), COPD)
Abdomonal congeintal anatomic route (i.e. patent processus vaginalis)
Complications if hernia cannot be repaired?
Incarceration Strangulation Bowel necrosis SBO Pain
Define reducible (hernia)
Ability to return the displaced organ or tissue/hernia contents to their usual antomical site
Define incarcerated (hernia)
Swollen or fixed within the hernia sac
An irreducible hernia
May cause intestinal obstruction
Define strangulated (hernia)
Incarcerated hernia with resulting ischemia
Symptoms of ischemia and intestinal obstruction or bowel necrosis
Define a complete hernia
Hernia sac and its contents protrude all the way through the defect
Define an incomplete hernia
Defect present withou sac or contents protruding completely through it
Sliding hernia
Hernia sac paritally formed by the wal of a viscus
Littre’s hernia
Inovles Meckel’s diverticulum
Spigelian hernia
Through linea semilunaris (aka spigelian fascia)
Spontaneous lateral ventral hernia
Internal hernia
Hernia into or involving intra-abdominal structures
Petersen’s hernia
After bariatric gastric bypass
Internal herniation of small bowel through the mesenteric defect from the Roux limb
Obturator hernia
Hernia through the obturator canal
More comon in females
Lumbar hernia
Petit’s hernia or Grynfeltt’s hernia
Petit’s hernia
Hernia through petit’s triangle - AKA inferior lumbar triangle
Grynfeltt’s hernia
Hernia through Grynfeltt-Lasshaft triangle (superior lumbar triangle)
Pantaloon hernia
Hernia sac exists as both a driect and indirect hernia straddling the inferior epigastric vessel
Incisional hernia
Hernia through an incisional site
Most common cause is a wound infection
Ventral hernia
Incisional hernia in the ventral abdominal wall
Parastomal hernia
Hernia adjacent to an ostomy
Sciatic hernia
Hernia through the sciatic foramen
Richter’s hernia
Incarcerated or strangulated hernia involving only one sidewall of the bowel, which can spontaneously reduce, resulting in gangrenous bowel and perforation within the abdomen without signs of obstruction
Epigastric hernia
Through the linea alba above the umbilicus
Umbilical hernia
Through the umbilical ring
Associated with ascites, pregnancy, obseity
Intraparietal hernia
Abdominal contents migrate bweteen the layers of the abdominal wall
Femoral hernia
Hernia medial to femoral vessels (under inguinal ligament)
Travels beneath teh inguinal ligament down teh femoral canal medial to the femoral vessels
Hesselbach’s hernia
Hernia under inguinal ligament lateral to femoral vessels
Bochdalek’s hernia
through posterior diaphragm, usually on the left
Morgagni’s hernia
Anterior parasternal diaphragmatic hernia
Properitoneal hernia
Intraparietal hernia between the peritoneum and transversalis fascia
Cooper’s hernia
Through the femoral canal and tracking into the scrotum or labia majorus
Indirect inguinal hernia
Lateral to Hesselbach’s triangle
Travels through the internal ring of the inguinal canal, travling down toward the external ring
Direct inguinal hernia
Within Hesselbach’s triangle
Travels directly though the abdominal wall (not through the internal ring)
Hiatal hernia
Through esophageal hiatus
Amyand’s hernia
Hernia sac contains a ruptured appendix
What are the boundaris of Hesselbach’s triangle?
Inferior epigastric vessels Inguinal ligament of Poupart lateral border of the rectus sheath Peritoneum Floor consists of internal oblique and transversus abdominis muscle
What are the layers of the abdominal wall?
Skin SubQ fat (camper's fascia) Scarpa's fascia (membrane) External oblique Internal oblique Transversus abdominus Transversalis fascia Preperitoneal fat
What is the DDx for a mass in a healed C-section incision?
Hernia
Endometrioma
DDx for a groin mass?
LAD, hematoma, seroma, abscess, hydrocele, femoral artery aneurysm (pulsating), EIC (epidermal inclusion cyst), undescended testicle, sarcoma, hernias, testicle torsion
What is the cause of a direct inguinal hernia?
Acquired defect from mechanical breakdown over the years