Inguinal, Femoral and other Hernias Flashcards
What is a hernia?
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
List 4 typical features of an abdominal wall hernia
- Soft lump protruding from the abdominal wall
- May be reducible
- May protrude on coughing or standing
- Aching, pulling or dragging sensation
List 3 key complications of a hernia
- Incarceration (cant be reduced)
- Obstruction
- Strangulation
What is meant by Incarceration?
Cannot be reduced, bowel is trapped in the herniated position
Can lead to obstruction and strangulation
What is meant by Obstruction?
How would this present?
Blockage in the passage of faeces through the bowel
Presents with vomiting, generalised abdominal pain and absolute constipation
What is meant by Strangulation?
How would this present?
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
What is the hernia sac?
Hernia sac has FUNDUS, BODY and NECK
List the coverings of a hernia sac
- skin
- subcutaneous fat
- aponeurosis
- muscle
- endo-cavity fascia
- endothelial lining – peritoneum in the abdomen
List the most common contents of a hernia
Small bowel and omentum is most common
List 4 main causes of hernia
Increased intra abdo pressure
Weakness/defect
Obesity
Congenital
List 4 things which cause an increase in abdominal pressure and may precipitate a hernia
Heavy lifting
Chronic cough
Straining to pass urine/faeces
Pregnancy
Why do hernias with a wider neck has lower risk of complications?
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
What is Richters Hernia?
When the antimesenteric wall of intestine protrudes through a defect in the abdominal wall
Results in strangulation and necrosis without obstruction
How do you examine a hernia?
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)
How does an inguinal hernia present?
Soft lump in the inguinal region (in the groin)
What are the 2 types of inguinal hernias?
Direct vs Indirect
What is a direct inguinal hernia?
Hernia due to weakness in the abdominal wall through Hesselbach’s triangle
What are the boundaries of Hesselbach’s triangle?
Medial – lateral border of the Rectus Abdominis
Lateral – Inferior epigastric vessels
Inferior – Inguinal ligament
What is a Indirect Inguinal hernia?
Where the bowel herniates through the inguinal canal which runs between the deep and superficial inguinal ring