Hernias, C36 P209-223 Flashcards
What is a hernia?
P209
(L. rupture) Protrusion of a peritoneal
sac through a musculoaponeurotic barrier
(e.g., abdominal wall); a fascial defect
What is the incidence?
P209
5%–10% lifetime; 50% are indirect
inguinal, 25% are direct inguinal, and
≈5% are femoral
What are the precipitating factors?
P209
Increased intra-abdominal pressure: straining at defecation or urination (rectal cancer, colon cancer, prostatic enlargement, constipation), obesity, pregnancy, ascites, valsavagenic (coughing) COPD; an abnormal congenital anatomic route (i.e., patent processus vaginalis)
Why should hernias be repaired?
P209
To avoid complications of incarceration/
strangulation, bowel necrosis, SBO, pain
What is more dangerous:
a small or large hernia defect?
P209
Small defect is more dangerous because a
tight defect is more likely to strangulate if
incarcerated
Define the following descriptive terms:
Reducible
P209
Ability to return the displaced organ or
tissue/hernia contents to their usual
anatomic site
Define the following descriptive terms:
Incarcerated
P209
Swollen or fixed within the hernia sac (incarcerated = imprisoned); may cause intestinal obstruction (i.e., an irreducible hernia)
Define the following descriptive terms:
Strangulated
P210 (picture)
Incarcerated hernia with resulting ischemia; will result in signs and symptoms of ischemia and intestinal obstruction or bowel necrosis (Think: strangulated = choked)
Define the following descriptive terms:
Complete
P210
Hernia sac and its contents protrude all
the way through the defect
Define the following descriptive terms:
Incomplete
P210
Defect present without sac or contents
protruding completely through it
What is reducing a hernia
“en masse”?
P210 (picture)
Reducing the hernia contents and
hernia sac
Define the following types of hernias:
Sliding hernia
P211 (picture)
Hernia sac partially formed by the wall of a viscus (i.e., bladder/cecum)
Define the following types of hernias:
Littre’s hernia
P211
Hernia involving a Meckel’s diverticulum
Think alphabetically: Littre’s Meckel’s = LM
Define the following types of hernias:
Spigelian hernia
P211
Hernia through the linea semilunaris
(or spigelian fascia); also known as
spontaneous lateral ventral hernia
(Think: Spigelian = Semilunaris)
Define the following types of hernias:
Internal hernia
P211
Hernia into or involving intra-abdominal
structure
Define the following types of hernias:
Petersen’s hernia
P211
Seen after bariatric gastric bypass—
internal herniation of small bowel
through the mesenteric defect from the
Roux limb
Define the following types of hernias:
Obturator hernia
P211
Hernia through obturator canal
females > males
Define the following types of hernias:
Lumbar hernia
P211
Petit’s hernia or Grynfeltt’s hernia
Define the following types of hernias:
Petit’s hernia
P211
(Rare) hernia through Petit’s triangle
(a.k.a. inferior lumbar triangle)
(Think: petite = small = inferior)
Define the following types of hernias:
Grynfeltt’s hernia
P211
Hernia through Grynfeltt-Lesshaft
triangle (superior lumbar triangle)
Define the following types of hernias:
Pantaloon hernia
P212 (picture)
Hernia sac exists as both a direct and indirect hernia straddling the inferior epigastric vessels and protruding through the floor of the canal as well as the internal ring (two sacs separated by the inferior epigastric vessels [the pant crotch] like a pair of pantaloon pants)
Define the following types of hernias:
Incisional hernia
P212
Hernia through an incisional site; most
common cause is a wound infection
Define the following types of hernias:
Ventral hernia
P212
Incisional hernia in the ventral abdominal
wall
Define the following types of hernias:
Parastomal hernia
P212
Hernia adjacent to an ostomy (e.g.,
colostomy)
Define the following types of hernias:
Sciatic hernia
P212
Hernia through the sciatic foramen
Define the following types of hernias:
Richter’s hernia
P212 (picture)
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
Define the following types of hernias:
Epigastric hernia
P213
Hernia through the linea alba above the
umbilicus
Define the following types of hernias:
Umbilical hernia
P213
Hernia through the umbilical ring, in
adults associated with ascites, pregnancy,
and obesity
Define the following types of hernias:
Intraparietal hernia
P213
Hernia in which abdominal contents
migrate between the layers of the
abdominal wall
Define the following types of hernias:
Femoral hernia
P213
Hernia medial to femoral vessels (under
inguinal ligament)
Define the following types of hernias:
Hesselbach’s hernia
P213
Hernia under inguinal ligament lateral
to femoral vessels
Define the following types of hernias:
Bochdalek’s hernia
P213
Hernia through the posterior diaphragm,
usually on the left (Think: Boch da
lek = “back to the left” on the
diaphragm)
Define the following types of hernias:
Morgagni’s hernia
P213
Anterior parasternal diaphragmatic
hernia
Define the following types of hernias:
Properitoneal hernia
P213
Intraparietal hernia between the
peritoneum and transversalis fascia
Define the following types of hernias:
Cooper’s hernia
P213
Hernia through the femoral canal
and tracking into the scrotum or labia
majus
Define the following types of hernias:
Indirect inguinal
P213
Inguinal hernia lateral to Hesselbach’s
triangle
Define the following types of hernias:
Direct inguinal
P213
Inguinal hernia within Hesselbach’s
triangle
Define the following types of hernias:
Hiatal hernia
P213
Hernia through esophageal hiatus
Define the following types of hernias:
Amyand’s hernia
P213
Hernia sac containing a ruptured appendix
Think: Amyand’s = Appendix
What are the boundaries of
Hesselbach’s triangle?
P214
- Inferior epigastric vessels
- Inguinal ligament (Poupart’s)
- Lateral border of the rectus sheath
Floor consists of internal oblique and the
transversus abdominis muscle
What are the layers of the
abdominal wall?
P214
Skin Subcutaneous fat Scarpa’s fascia External oblique Internal oblique Transversus abdominus Transversalis fascia Preperitoneal fat Peritoneum Note: All three muscle layer aponeuroses form the anterior rectus sheath, with the posterior rectus sheath being deficient below the arcuate line
What is the differential
diagnosis for a mass in a
healed C-section incision?
P214
Hernia, ENDOMETRIOMA
GROIN HERNIAS
What is the differential
diagnosis of a groin mass?
P214
Lymphadenopathy, hematoma, seroma,
abscess, hydrocele, femoral artery
aneurysm, EIC, undescended testicle,
sarcoma, hernias, testicle torsion
GROIN HERNIAS
DIRECT INGUINAL HERNIA
What is it?
P214
Hernia within the floor of Hesselbach’s
triangle, i.e., the hernia sac does not
traverse the internal ring (think directly
through the abdominal wall)
GROIN HERNIAS
DIRECT INGUINAL HERNIA
What is the cause?
P214
Acquired defect from mechanical
breakdown over the years
GROIN HERNIAS
DIRECT INGUINAL HERNIA
What is the incidence?
P214
≈1% of all men; frequency increases
with advanced age
GROIN HERNIAS DIRECT INGUINAL HERNIA What nerve runs with the spermatic cord in the inguinal canal? P214
Ilioinguinal nerve
GROIN HERNIAS
INDIRECT INGUINAL HERNIA
What is it?
P215 (picture)
Hernia through the internal ring of the
inguinal canal, traveling down toward the
external ring; it may enter the scrotum
upon exiting the external ring (i.e., if
complete); think of the hernia sac traveling
indirectly through the abdominal wall
from the internal ring to the external ring
GROIN HERNIAS
INDIRECT INGUINAL HERNIA
What is the cause?
P215
Patent processus vaginalis (i.e., congenital)
GROIN HERNIAS
INDIRECT INGUINAL HERNIA
What is the incidence?
P215
≈5% of all men; most common hernia in
both men and women
GROIN HERNIAS INDIRECT INGUINAL HERNIA How is an inguinal hernia diagnosed? P215
Relies mainly on history and physical
exam with index finger invaginated into
the external ring and palpation of hernia;
examine the patient standing up if
diagnosis is not obvious
(Note: if swelling occurs below the inguinal
ligament, it is possibly a femoral hernia)
GROIN HERNIAS INDIRECT INGUINAL HERNIA What is the differential diagnosis of an inguinal hernia? P215
Lymphadenopathy, psoas abscess, ectopic
testis, hydrocele of the cord, saphenous
varix, lipoma, varicocele, testicular torsion,
femoral artery aneurysm, abscess
GROIN HERNIAS
INDIRECT INGUINAL HERNIA
What is the risk of strangulation?
P215
Higher with indirect than direct inguinal
hernia, but highest in femoral hernias
GROIN HERNIAS
INDIRECT INGUINAL HERNIA
What is the treatment?
P216
Emergent herniorrhaphy is indicated
if strangulation is suspected or acute
incarceration is present; otherwise, elective
herniorrhaphy is indicated to prevent the
chance of incarceration/strangulation
GROIN HERNIAS
INGUINAL HERNIA REPAIRS
Define the following procedures:
Bassini
P216
Sutures approximate reflection of inguinal ligament (Poupart’s) to the transversus abdominis aponeurosis/ conjoint tendon
GROIN HERNIAS
INGUINAL HERNIA REPAIRS
Define the following procedures:
McVay
P216
Cooper’s ligament sutured to transversus
abdominis aponeurosis/conjoint tendon
GROIN HERNIAS
INGUINAL HERNIA REPAIRS
Define the following procedures:
Lichtenstein
P216
“Tension-free repair” using mesh
GROIN HERNIAS
INGUINAL HERNIA REPAIRS
Define the following procedures:
Shouldice
P216
Imbrication of the floor of the inguinal
canal (a.k.a. “Canadian repair”)
GROIN HERNIAS
INGUINAL HERNIA REPAIRS
Define the following procedures:
Plug and patch
P216
Placing a plug of mesh in hernia defect
and then overlaying a patch of mesh over
inguinal floor (requires few if any sutures
in mesh!)
GROIN HERNIAS
INGUINAL HERNIA REPAIRS
Define the following procedures:
High ligation
P216
Ligation and transection of indirect
hernia sac without repair of inguinal floor
(used only in children)
GROIN HERNIAS
INGUINAL HERNIA REPAIRS
Define the following procedures:
TAPP procedure
P216
TransAbdominal PrePeritoneal inguinal
hernia repair
GROIN HERNIAS
INGUINAL HERNIA REPAIRS
Define the following procedures:
TEPA procedure
P216
Totally ExtraPeritoneal Approach
GROIN HERNIAS INGUINAL HERNIA REPAIRS What are the indications for laparoscopic inguinal hernia repair? P216
- Bilateral inguinal hernias
- Recurring hernia
- Need to resume full activity as soon as
possible
GROIN HERNIAS CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS What is the first identifiable subcutaneous named layer? P216
Scarpa’s fascia (thin in adults)
GROIN HERNIAS CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS What is the name of the subcutaneous vein that is ligated? P217
Superficial epigastric vein
GROIN HERNIAS CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS What happens if you cut the ilioinguinal nerve? P217
Numbness of inner thigh or lateral
scrotum; usually goes away in 6 months
GROIN HERNIAS CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS From what abdominal muscle layer is the cremaster muscle derived? P217
Internal oblique muscle
GROIN HERNIAS CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS From what abdominal muscle layer is the inguinal ligament (a.k.a. Poupart’s ligament) derived? P217
External oblique muscle aponeurosis
GROIN HERNIAS CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS To what does the inguinal (Poupart’s) ligament attach? P217
Anterior superior iliac spine to the pubic
tubercle
GROIN HERNIAS CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS Which nerve travels on the spermatic cord? P217
Ilioinguinal nerve
GROIN HERNIAS CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS Why do some surgeons deliberately cut the ilioinguinal nerve? P217
First they obtain preoperative consent
and cut so as to remove the risk of
entrapment and postoperative pain
GROIN HERNIAS
CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS
What is in the spermatic cord (6)?
P217
- Cremasteric muscle fibers
- Vas deferens
- Testicular artery
- Testicular pampiniform venous plexus
- ± hernia sac
- Genital branch of the genitofemoral
nerve
GROIN HERNIAS
CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS
What is the hernia sac made of?
P217
Peritoneum (direct) or a patent processus
vaginalis (indirect)
GROIN HERNIAS CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS What attaches the testicle to the scrotum? P217
Gubernaculum
GROIN HERNIAS CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS What is the most common organ in an inguinal hernia sac in men? P217
Small intestine
GROIN HERNIAS CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS What is the most common organ in an inguinal hernia sac in women? P217
Ovary/fallopian tube
GROIN HERNIAS CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS What lies in the inguinal canal in the female instead of the VAS? P218
Round ligament
GROIN HERNIAS CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS Where in the inguinal canal does the hernia sac lie in relation to the other structures? P218
Anteromedially
GROIN HERNIAS
CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS
What is a “cord lipoma”?
P218
Preperitoneal fat on the cord structures
(pushed in by the hernia sac); not a real
lipoma; remove surgically, if feasible
GROIN HERNIAS CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS What is a small outpouching of testicular tissue off of the testicle? P218
Testicular appendage (a.k.a. the appendix testes); remove with electrocautery
GROIN HERNIAS CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS What action should be taken if a suture is placed through the femoral artery or vein during an inguinal herniorrhaphy? P218
Remove the suture as soon as possible
and apply pressure (i.e., do not tie the
suture down!)
GROIN HERNIAS CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS What nerve is found on top of the spermatic cord? P218
Ilioinguinal nerve
GROIN HERNIAS CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS What nerve travels within the spermatic cord? P218
Genital branch of the genitofemoral
nerve
GROIN HERNIAS CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS What are the borders of Hesselbach’s triangle? P218 (picture)
- Epigastric vessels
- Inguinal ligament
- Lateral border of the rectus
GROIN HERNIAS CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS What type of hernia goes through Hesselbach’s triangle? P219
Direct hernia due to a weak abdominal
floor
GROIN HERNIAS
CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS
What is a “relaxing incision”?
P219
Incision(s) in the rectus sheath to relax
the conjoint tendon so that it can be
approximated to the reflection of the
inguinal ligament without tension
GROIN HERNIAS
CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS
What is the conjoint tendon?
P219
Aponeurotic attachments of the
“conjoining” of the internal oblique and
transversus abdominis to the pubic tubercle
GROIN HERNIAS
CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS
Define inguinal anatomy
P219 (picture)
- Inguinal ligament (Poupart’s ligament)
- Transversus aponeurosis
- Conjoint tendon
GROIN HERNIAS CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS How tight should the new internal inguinal ring be? P219
Should allow entrance of the tip of a
Kelly clamp but not a finger (the new
external inguinal ring should not be tight
and should allow entrance of a finger)
GROIN HERNIAS CLASSIC INTRAOPERATIVE INGUINAL HERNIA QUESTIONS What percentage of the strength of an inguinal floor repair does the external oblique aponeurosis represent? P219
ZERO
GROIN HERNIAS
FEMORAL HERNIA
What is it?
P219
Hernia traveling beneath the inguinal
ligament down the femoral canal medial
to the femoral vessels (Think: FM radio,
or Femoral hernia = Medial)
GROIN HERNIAS FEMORAL HERNIA What are the boundaries of the femoral canal? P220
- Cooper’s ligament posteriorly
- Inguinal ligament anteriorly
- Femoral vein laterally
- Lacunar ligament medially
GROIN HERNIAS FEMORAL HERNIA What factors are associated with femoral hernias? P220
Women, pregnancy, and exertion
GROIN HERNIAS FEMORAL HERNIA What percentage of all hernias are femoral? P220
5%
GROIN HERNIAS FEMORAL HERNIA What percentage of patients with a femoral hernia are female? P220
85%!
GROIN HERNIAS
FEMORAL HERNIA
What are the complications?
P220
Approximately one third incarcerate
due to narrow, unforgiving neck
GROIN HERNIAS FEMORAL HERNIA What is the most common hernia in women? P220
Indirect inguinal hernia
GROIN HERNIAS FEMORAL HERNIA What is the repair of a femoral hernia? P220
McVay (Cooper’s ligament repair), mesh
plug repair
HERNIA REVIEW QUESTIONS Should elective TURP or elective herniorrhaphy be performed first? P220
TURP
HERNIA REVIEW QUESTIONS Which type of esophageal hiatal hernia is associated with GE reflux? P220
Sliding esophageal hiatal hernia
HERNIA REVIEW QUESTIONS Classically, how can an incarcerated hernia be reduced in the ER? P220
- Apply ice to incarcerated hernia
- Sedate
- Use the Trendelenburg position for
inguinal hernias - Apply steady gentle manual pressure
- Admit and observe for signs of
necrotic bowel after reduction - Perform surgical herniorrhaphy
ASAP
HERNIA REVIEW QUESTIONS What is appropriate if you cannot reduce an incarcerated hernia with steady, gentle compression? P221
Go directly to O.R. for repair
HERNIA REVIEW QUESTIONS What is the major difference in repairing a pediatric indirect inguinal hernia and an adult inguinal hernia? P221
In babies and children it is rarely
necessary to repair the inguinal floor;
repair with “high ligation” of the hernia sac
HERNIA REVIEW QUESTIONS
What is the
Howship-Romberg sign?
P221
Pain along the medial aspect of the
proximal thigh from nerve compression
caused by an obturator hernia
HERNIA REVIEW QUESTIONS
What is the “silk glove” sign?
P221
Inguinal hernia sac in an infant/toddler
feels like a finger of a silk glove when
rolled under the examining finger
HERNIA REVIEW QUESTIONS What must you do before leaving the O.R. after an inguinal hernia repair? P221
Pull the testicle back down to the
scrotum
ESOPHAGEAL HIATAL HERNIAS
Define type I and type II
hiatal hernias.
P221
Type I = sliding
Type II = paraesophageal
ESOPHAGEAL HIATAL HERNIAS
SLIDING ESOPHAGEAL HIATAL HERNIA
What is it?
P221 (picture)
Both the stomach and GE junction
herniate into the thorax via the
esophageal hiatus; also known as type I
hiatal hernia
ESOPHAGEAL HIATAL HERNIAS
SLIDING ESOPHAGEAL HIATAL HERNIA
What is the incidence?
P222
> 90% of all hiatal hernias
ESOPHAGEAL HIATAL HERNIAS
SLIDING ESOPHAGEAL HIATAL HERNIA
What are the symptoms?
P222
Most patients are asymptomatic, but the condition can cause reflux, dysphagia (from inflammatory edema), esophagitis, and pulmonary problems secondary to aspiration
ESOPHAGEAL HIATAL HERNIAS
SLIDING ESOPHAGEAL HIATAL HERNIA
How is it diagnosed?
P222
UGI series, manometry,
esophagogastroduodenoscopy (EGD)
with biopsy for esophagitis
ESOPHAGEAL HIATAL HERNIAS
SLIDING ESOPHAGEAL HIATAL HERNIA
What are the complications?
P222
Reflux → esophagitis → Barrett’s esophagus
→ cancer and stricture formation;
aspiration pneumonia; it can also result in
UGI bleeding from esophageal ulcerations
ESOPHAGEAL HIATAL HERNIAS
SLIDING ESOPHAGEAL HIATAL HERNIA
What is the treatment?
P222
85% of cases treated medically with antacids, H(2) blockers/PPIs, head elevation after meals, small meals, and no food prior to sleeping; 15% of cases require surgery for persistent symptoms despite adequate medical treatment
ESOPHAGEAL HIATAL HERNIAS
SLIDING ESOPHAGEAL HIATAL HERNIA
What is the surgical treatment?
P222
Laparoscopic Nissen fundoplication (LAP
NISSEN) involves wrapping the fundus
around the LES and suturing it in place
ESOPHAGEAL HIATAL HERNIAS
PARAESOPHAGEAL HIATAL HERNIA
What is it?
P222 (picture)
Herniation of all or part of the stomach through the esophageal hiatus into the thorax without displacement of the gastroesophageal junction; also known as type II hiatal hernia
ESOPHAGEAL HIATAL HERNIAS
PARAESOPHAGEAL HIATAL HERNIA
What is the incidence?
P223
<5% of all hiatal hernias (rare)
ESOPHAGEAL HIATAL HERNIAS
PARAESOPHAGEAL HIATAL HERNIA
What are the symptoms?
P223
Derived from mechanical obstruction;
dysphagia, stasis gastric ulcer, and
strangulation; many cases are asymptomatic
and not associated with reflux because of
a relatively normal position of the GE
junction
ESOPHAGEAL HIATAL HERNIAS
PARAESOPHAGEAL HIATAL HERNIA
What are the complications?
P223
Hemorrhage, incarceration, obstruction,
and strangulation
ESOPHAGEAL HIATAL HERNIAS
PARAESOPHAGEAL HIATAL HERNIA
What is the treatment?
P223
Surgical, because of frequency and
severity of potential complications
ESOPHAGEAL HIATAL HERNIAS
PARAESOPHAGEAL HIATAL HERNIA
What is a type III hiatal hernia?
P223
Combined type I and type II
ESOPHAGEAL HIATAL HERNIAS
PARAESOPHAGEAL HIATAL HERNIA
What is a type IV hiatal hernia?
P223
Organ (e.g., colon or spleen) +/-
stomach in the chest cavity