Abdominal Pt 2 Flashcards
Give some symptoms seen in hepatitis
- Muscle and joint pain
- High temperature
- N&V
- Fatigue
- General sense of unwell
- Loss of appetite
- Stomach pain
- Dark urine
- Pale poo
- Itchy skin
- Jaundice
Signs seen in hepatitis?
- Hepatomegaly
- Splenomegaly
- Lymphadenopathy
- Ascites
- Encephalopathy
- Jaundice
What is the most common type of viral hepatitis in the UK?
Hep C
Which acute hepatitis infections can lead to chronic hepatitis?
Hep B & Hep C
Transmission of Hep A?
From consuming contaminated food and drink with faecal matter of an infected person (faeco-oral route)
What types of hepatitis are there vaccinations available for?
Hep A & B
Where in the world is Hep A infection commonly seen?
Most common in countries with poor sanitation. Common in Indian subcontinent, Africa, Central and South America, the Far East and eastern Europe.
Prognosis of Hep A infection?
Often self-limiting and passes within a few months. Does NOT caused chronic liver disease or have a chronic carrier state.
Transmission of Hep B?
Blood; sexual contact, sharing needles, vertical transmission (mother to baby)
Risk factors for Hep B?
- Travel to countries where rate is high
- IVDU
- MSM
What complications can chronic hepatitis lead to?
Cirrhosis → hepatocellular carcinoma
Transmission of Hep C?
Blood-to-blood contact with infected person e.g. sharing needles
Who is at the highest risk for Hep C in UK?
IVDU (90% cases)
What % of acute Hep C infections will become chronic?
1 in 4 (25%)
What is fulminant hepatitis?
a clinical syndrome of severe liver function impairment, which causes hepatic coma and the decrease in synthesising capacity of liver, and develops within eight weeks of the onset of hepatitis.
Who specifically does Hep D affect?
Only affects people who are already infected with hepatitis B as it needs the Hep B virus to survive in the body
Where in the world is Hep D more common?
Uncommon in UK but more widespread in Middle East, Africa and South America
Transmission of Hep D?
Blood-to-blood contact or sexual contact
What is the most common cause of acute hepatitis in the UK?
Hep E
Transmission of Hep E?
Consumption of raw or undercooked pork meat, wild boar meat, venison and shellfish
Prognosis of Hep E?
Generally a mild and short-term infection that does not require treatment (but can be serious in immunosuppressed)
Give some causes of hepatitis
- Hep A/B/C/D/E
- Alcoholic hepatitis
- Autoimmune hepatitis
Symptoms of alcoholic hepatitis?
- Often asymptomatic (many people don’t know they have)
- Sudden jaundice and liver failure in some people
Management of autoimmune hepatitis?
Immunosuppressants
What is the most common indication for emergency surgery in paediatric patients?
Appendicitis
Complications of appendicitis?
- Perforation → peritonitis
- Abscess formation
Risk factors for appenditicis?
- Most commonly presents in 2nd decade of life
- Slight predominancy in males vs females
- Children breastfed for <6 months
- Children exposed to tobacco smoke
describe pain in appendicitis
Generalised umbilical pain that localises to right iliac fossa
Give some differentials for appendicitis
- Mesenteric adenitis: usually preceded by a sore throat
- Meckel’s diverticulitis: symptoms include rectal bleeding
- Gastroenteritis: general abdominal pain but will not migrate to right iliac fossa
- UTI: urinary symptoms, urinalysis will show nitrites and WBCs
- Intestinal obstruction
- Biliary colic and acute cholecystitis
- IBD & IBS
- Constipation
- Pancreatitis
Symptoms of appendicitis?
- Acute abdominal pain (approx. 20-30% of children presenting with acute abdominal pain will be diagnosed with appendicitis)
- Typically worse on movement
- N&V
- Low-grade fever
- Right iliac fossa pain
- Umbilical pain
- Diarrhoea
- Anorexia
Signs seen in appenditicis?
- Right iliac fossa tenderness
- RLQ peritonism
- Abdominal distension, guarding, rebound tenderness, absent bowel sounds all suggestive of peritonitis
- Rovsing sign
- Psoas sign
- Obturator sign
- Hop test
- Murphy’s triad
What is Rovsing’s sign?
palpation of the left iliac fossa causes right iliac fossa pain
What is Psoas sign?
extension of the right thigh, in the left lateral position, causes right iliac fossa pain
What is obturator sign?
internal rotation of the flexed right thigh causes pain
Bedside investigations in appendicitis?
- Urinalysis → rule out UTI
- Capillary blood glucose → N&V and anorexia may have caused hypoglycaemia
- Baseline vital signs → low grade fever
Lab investigations in appendicitis?
- FBC → raised WCC
- U&Es → anorexia, N&V can cause deranged renal function in severe cases
- CRP → inflammation
- Group and save
Why is it important to get a group & save in appenditis?
appendicitis management is typically operative and this test is important as a transfusion may be required if there is significant blood loss
Management of appendicitis?
- Appendicectomy: laparoscopic approach is preferred
- However some resolve spontaneously
Is a SBO or LBO more common?
SBO (80%)
Pathophysiology behind a bowel obstruction?
Gross dilatation of the bowel proximal to the blockage occurs, causing increased peristalsis and secretion of large volumes of electrolyte-rich fluid into the bowel.
What is the most common cause of SBO in the developed world?
Intestinal adhesions (bands of fibrous tissue) from previous surgery
Give some causes of bowel obstruction
- Adhesions
- Hernias
- Colon cancer
- IBD
- Diverticulitis
- Twisting of colon (volvulus)
- Impacted faeces
- In children → intussusception is most common
What type of hernias typically cause bowel obstruction? Who is this seen in?
mainly femoral in elderly females
Potential complications of SBO/LBO?
-
Bowel ischaemia leading to tissue death:
- Intestinal obstruction can cut off blood supply to part of intestine
- Tissue death can result in a tear (perforation) which can lead to infection/haemorrhage
- Bowel perforation leading to faecal peritonitis (high mortality):
- Dehydration and renal impairment
Give some differentials for bowel obstruction
- Pseudo-obstruction
- Paralytic ileus
- Toxic megacolon
- Constipation
Symptoms of bowel obstruction?
- Crampy/colicky abdominal pain that comes and goes (2ary to bowel peristalsis)
- Loss of appetite
- Absolute constipation
- Vomiting – occurs early in proximal obstructions and late in distal obstructions
- Inability to have a bowel movement or pass gas
- Abdominal distension
Describe signs seen in an abdo exam in bowel obstruction
- Signs of underlying cause:
- Scars from previous surgery
- Obvious hernia
- Cachexia from malignancy
- Bowel sounds – tinkling or absent altogether
- Tender abdomen – guarding and rebound tenderness on palpation
- Swollen abdomen
- Ascites – 3rd spacing can occur in bowel obstruction
- Percussion – tympanic sounds produced (air filled abdomen)
Describe percussion in bowel obstruction
tympanic sounds produced (air filled abdomen)
Describe bowel sounds in bowel obstruction
tinkling or absent altogether
Why would a VBG be useful in bowel obstruction?
Useful to evaluate signs of ischaemia (high lactate) or for immediate assessment of metabolic derangement (2ary to dehydration or excessive vomiting)
Most accurate imaging in bowel obstruction?
CT scan
Describe an AXR in SBO
- Dilated bowel >3cm (3/6/9 rule!)
- Central abdominal location
- Valvulae conniventes visible (lines completely crossing the bowel)
Describe an AXR in LBO
- Dilated bowel (>6cm or >9cm if at caecum)
- Peripheral location
- Haustral lines visible (not completely crossing bowel)
Why would an erect CXR be useful in bowel obstruction?
assess for free air under the diaphragm to suggest a bowel perforation
Describe each AXR
AXR (1) – SBO with valvulae conniventes crossing a dilated, centrally located bowel
AXR (2) – LBO with peripherally located dilated bowel segments.
Management of bowel obstruction?
Management depends on the aetiology and whether it has been complicated by bowel ischaemia, perforation and/or peritonism.
-
Suck and drip:
- make patient nil by mouth and insert NG tube to decompress bowel (‘suck’)
- fluid resuscitation and correct electrolyte imbalances (‘drip’)
- Urinary catheter & fluid balance
- Analgesia & anti-emetics
What would indicate the need for surgery in bowel obstruction?
if evidence of ischaemia or closed loop bowel obstruction
Most common cause of SBO vs LBO
SBO → adhesions, hernias
LBO → malignancy, sigmoid volvulus
Describe the pain in both SBO and LBO
Diffuse, central, ‘colicky’ pain
Describe vomiting & constipation SBO and LBO
SBO → late constipation, early vomiting (bilious)
LBO → early constipation, late vomiting (faeculent)
Describe abdo distension in SBO and LBO
SBO → less prominent
LBO → marked
Describe progression of SBO vs LBO
SBO → rapid
LBO → Slower
What is a hernia?
The protrusion of a viscus into an abnormal space (i.e. a structure that passes through a space or defect into an abnormal location)
What is a reducible hernia?
When the contents of the hernia can be manipulated back into their original position through the defect from which they emerge
What is an incarcerated hernia (irreducible)?
The hernia is compressed by the defect causing it to be irreducible (i.e. unable to be pushed back into its original position)
What is an obstructed hernia?
Refers mainly to hernias containing bowel** where the contents of the hernia are compressed to the extent that the **bowel lumen is no longer patent and causes bowel obstruction