Inguinal, Femoral and other Hernias Flashcards

1
Q

What is a hernia?

A

Weak point in a cavity wall leading to abnormal protrustion of a bodys cavity, taking its linings with it.

A hernia is a protrusion of a viscus or other structure beyond the normal coverings of the cavity in which it is contained

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2
Q

List 4 typical features of an abdominal wall hernia

A
  1. Soft lump protruding from the abdominal wall
  2. May be reducible
  3. May protrude on coughing or standing
  4. Aching, pulling or dragging sensation
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3
Q

List 3 key complications of a hernia

A
  1. Incarceration (cant be reduced)
  2. Obstruction
  3. Strangulation
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4
Q

What is meant by Incarceration?

A

Cannot be reduced, bowel is trapped in the herniated position

Can lead to obstruction and strangulation

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5
Q

What is meant by Obstruction?

How would this present?

A

Blockage in the passage of faeces through the bowel

Presents with vomiting, generalised abdominal pain and absolute constipation

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6
Q

What is meant by Strangulation?

How would this present?

A

Hernia is non-reducible and it cuts off the blood supply causing ischaemia

Presents with significant pain and tenderness at the hernia site

Surgical emergency

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7
Q

What is the hernia sac?

A

Hernia sac has FUNDUS, BODY and NECK

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8
Q

List the coverings of a hernia sac

A
  1. skin
  2. subcutaneous fat
  3. aponeurosis
  4. muscle
  5. endo-cavity fascia
  6. endothelial lining – peritoneum in the abdomen
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9
Q

List the most common contents of a hernia

A

Small bowel and omentum is most common

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10
Q

List 4 main causes of hernia

A

Increased intra abdo pressure

Weakness/defect

Obesity

Congenital

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11
Q

List 4 things which cause an increase in abdominal pressure and may precipitate a hernia

A

Heavy lifting

Chronic cough

Straining to pass urine/faeces

Pregnancy

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12
Q

Why do hernias with a wider neck has lower risk of complications?

A

Because the size of opening means contents can easily pass out and can also be easily put back in

Lower risk of incarceration, obstruction and strangulation

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13
Q

What is Richters Hernia?

A

When the antimesenteric wall of intestine protrudes through a defect in the abdominal wall

Results in strangulation and necrosis without obstruction

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14
Q

How do you examine a hernia?

A

Examine in SUPINE & STANDING Positions

  • Lying position to help to reduce the hernia
  • Standing position/gravity helps hernia to reappear
  • CONTROL of hernia is the ability to prevent the hernia reappearing by digital pressure at the neck
  • Remember to examine the opposite side and other common sites
  • Consider features of predisposing factors like COPD, Prostatism, colonic cancer
  • TENDER HERNIA indicates strangulation
  • Obstructed hernia- features of intestinal obstruction (details)
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15
Q

How does an inguinal hernia present?

A

Soft lump in the inguinal region (in the groin)

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16
Q

What are the 2 types of inguinal hernias?

A

Direct vs Indirect

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17
Q

What is a direct inguinal hernia?

A

Hernia due to weakness in the abdominal wall through Hesselbach’s triangle

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18
Q

What are the boundaries of Hesselbach’s triangle?

A

Medial – lateral border of the Rectus Abdominis
Lateral – Inferior epigastric vessels
Inferior – Inguinal ligament

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19
Q

What is a Indirect Inguinal hernia?

A

Where the bowel herniates through the inguinal canal which runs between the deep and superficial inguinal ring

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20
Q

What is the significance of the inguinal canal in males during foetal development?

A

Allows the spermatic cord and its contents to travel from inside the peritoneal cavity, through the abdominal wall and into the scrotum

21
Q

What is the significance of the inguinal canal in females during foetal development?

A

The round ligament, attached to the uterus, passes through the deep inguinal ring, inguinal canal and then attaches to the labia majora

22
Q

What is the purpose of the processus vaginalis?

What normally happens to this structure?

A

The processus vaginalis (pouch of peritoneum) allows the testes to descend from the abdominal cavity, through the inguinal canal and into the scrotum

Normally after the decent, the deep inguinal ring closes and the processus vaginalis is obliterated

23
Q

How may development failure lead to a an indirect hernia?

A

When there is failure of the inguinal ring to close and the processus vaginalis remains intact

This leaves a patent tract through which the bowel can herniate through

24
Q

What specific finding on examination can help differentiate a direct vs indirect inguinal hernia?

A

When an indirect hernia is reduced and pressure is applied to the deep inguinal ring - It will remain reduced!

25
Q

What is a femoral hernia?

A
26
Q

Compare the location of a direct vs indirect inguinal hernia?

A

Indirect is lateral to inferior epigastric artery

Direct is medial to inferior epigastric artery

27
Q

What is a Femoral Hernia?

A

Herniation of the abdominal contents through the femoral canal

Occurs below the inguinal ligament, at the top of the thigh

28
Q

What are femoral hernias at a high risk of and why?

A

Incarceration, Obstruction and Strangulation

Because the opening between the peritoneal cavity and the femoral canal is the femoral ring which is a very narrow opening

29
Q

What are the boundaries of the femoral CANAL?

(FLIP)

A
  • Femoral vein laterally
  • Lacunar ligament medially
  • Inguinal ligament anteriorly
  • Pectineal ligament posteriorly
30
Q

What are the boundaries of the femoral TRIANGLE?

(SAIL)

A
  • Sartorius – lateral border
  • Adductor longus – medial border
  • Inguinal Ligament – superior border
31
Q

What are the contents of the femoral TRIANGLE?

(NAVY-C)

A
  • Femoral Nerve
  • Femoral Artery
  • Femoral Vein
  • Y-fronts
  • Femoral Canal (containing lymphatic vessels and nodes)
32
Q

What are incisional hernias?

A

Occur at the site of an incision from previous surgery

33
Q

What is an umbilical hernia?

A

Occur around the umbilicus due to a defect in the muscle around the umbilicus

Common in neonates and can resolve spontaneously. Can also occur in older adults

34
Q

What is a Spigelian Hernia?

A

Occurs between the lateral border of the rectus abdominis and the linea semilunaris (site of the spigelian fascia)

Narrow base so increased risk of incarceration, obstruction and strangulation?

35
Q

What is Diastasis Recti?

A

Widening of the linea alba forming a larger gap between the rectus muscles, not technically a hernia

Gap becomes most prominent when the patient lies on their back and lifts their head. There is a protruding bulge along the middle of the abdomen.

This can be congenital (in newborns) or due to weakness in the connective tissue, for example following pregnancy or in obese patients.

No treatment is required in most cases, but surgical repair is possible.

36
Q

How does Diastasis Recti present?

A

Protruding bulge along the middle of the abdomen

Gap becomes most prominent when the patient lies on their back and lifts their head

37
Q

List 2 causes of Diastasis Recti

A
  1. Congenital (in newborns)
  2. Weakness in the CT ie. following pregnancy or in obese patients
38
Q

What is an Obturator Hernia?

How may it present?

A

Where the abdominal or pelvic contents herniate through the obturator foramen at the bottom of the pelvis

Often asymptomatic but may present with pain in the groin or medial thigh (irritation of obturator nerve)

39
Q

List 2 risk factors for an obturator hernia

A
  1. Women, particularly in older age
  2. Multiple pregnancies
  3. Vaginal deliveries
40
Q

What is Howship–Romberg sign?

A

Sign of obturator hernia

Refers to pain extending from the inner thigh to the knee when the hip is internally rotated and is due to compression of the obturator nerve

41
Q

What are Hiatus Hernia?

A

Herniation of the stomach up through the diaphragm

42
Q

What are the 4 types of hiatus hernias?

A
  • Type 1: Sliding
  • Type 2: Rolling
  • Type 3: Combination of sliding and rolling
  • Type 4: Large opening with additional abdominal organs entering the thorax
43
Q

Compare a Sliding vs Rolling Hiatus Hernia?

A

Sliding: stomach slides up through the diaphragm, with the GOJ passing up into the thorax

Rolling: where a separate portion of the stomach (ie. the fundus), folds around and enters through the diaphragm opening, alongside the oesophagus

44
Q

List 3 key risk factors for a hiatal hernia

A
  1. Increasing age
  2. Obesity
  3. Pregnancy
45
Q

How do Hiatus Hernias present?

A

Dyspeptic symptoms:

  • Heartburn
  • Acid reflux
  • Reflux of food
  • Burping
  • Bloating
  • Halitosis (bad breath)
46
Q

List 4 investigations which may show a hiatus hernia

A
  1. Chest x-rays
  2. CT scans
  3. Endoscopy
  4. Barium swallow testing
  • Can be intermittent, meaning they may not be seen on investigations
47
Q

Treatment of a hiatus hernia?

A

Conservative: medical treatment of GORD

Surgical (laparoscopic fundoplication) if there is a high risk of complications or symptoms are resistant to medical treatment

48
Q

What are the 3 principals of Hernia repair?

A
  1. Conservative management: good for wide neck or patients unfit for surgery
  2. Tension-free repair (surgery): placing mesh over defect
  3. Tension repair (surgery): suturing defect back together