The Acute Abdomen Flashcards
Match the sign to the diagnosis: Cullen's sign Grey Turner's sign Murphy's sign Rosvig's sign
Cullen’s sign pancreatitis
Grey Turner’s sign pancreatitis
Murphy’s sign gallbladder
Rosvig’s sign appendicitis
Pain exacerbated by coughing/moving is caused by what type of pain?
Parietal pain
Pain where you’re unable to stay still is caused by what type of pain?
Visceral pain
What causes tinkling bowel sounds?
Complete small bowel obstruction
Is referred pain always ipsilateral?
Yes
Does parietal or visceral pain cause guarding rebound tenderness?
Parietal pain
visceral non-tender
What is absolute constipation?
Not passing wind
What colour is fresh bile?
Golden yellow
What drug can be used to reverse warfarin? how long does it take? what can be done if you need it asap?
Vitamin K
PO takes few days
IV takes 6hr
ASAP: FFP or factor 7
Name 4 causes of LLQ pain
Ruptured ectopic Ovarian cyst/torsion Diverticulitis Renal stone Crohn's / UC Strangulated hernia
Name 4 causes of RLQ pain
Ruptured ectopic Ovarian cyst/torsion Diverticulitis Appendicitis Renal stones Crohn's Strangulated hernia
Name 4 causes of epigastric pain
Pancreatitis MI PUD Gastritis / reflux AAA Diaphragmatic hernia Acute cholecystitis Cholecystitis AAA
Name 4 causes of RUQ pain
Acute cholecystitis RLL pneumonia Duodenal ulcer Hepatitis Appendicitis Renal stone Pyelonephritis
Name 4 causes of LUQ pain
LLL pneumonia AAA Pyelonephritis Pancreatitis Renal stone Gastric ulcer
Name 4 causes of central abdominal pain
Intestinal obstruction Pancreatitis Early appendicitis AAA Diverticulitis Ischemic bowel
What basic investigations should you do for the acute abdomen?
Bloods: FBC, CRP, U+E, lactate, amylase, cardiac enzyme, G&S, crossmatch ECG Urinalysis bHCG erect CXR
What type of imaging is 1st line when investigating the acute abdomen?
CT
If suspect obstruction: AXR
US useful in RUQ pain / women with pelvic pain / kids
What basic Mx would you give for the acute abdomen whilst awaiting Ix results?
IV morphine IV paracetamol Antiemetic Oxygen if low IV fluid
In the management of the acute abdomen, most patients require resuscitation before surgery, except which?
Ischemic gut / faecal peritonitis
What is absolute constipation?
Not passed wind
A peritonitic patient is likely to stay still or move about?
Stay still
What would be see on urine dipstick in pyelonephritis?
Nitrites, protein, leukocytes
What is free air under the diaphragm a sign of?
Perforation
Abdominal XR has the radiation equivalent of how many CXR?
50
What type of imaging is used for the acute abdomen in pregnant women?
MRI
Sudden onset abdo pain + shock = what (until proven otherwise)
AAA
or bowel perforation, inferior MI, acute ischemic bowel
Is the normal location of the appendix intraperitoneal or retroperitoneal?
Retroperitoneal
Where is the pain located in appendicitis?
Perriumbilical central pain that shift to RIF
(periumbilical since pancreas is a midgut organ, shifts as irritates parietal peritoneum)
(ask patient to point to where the pain started and where it is now)
How can you assess for peritonism in appendicitis?
Ask kid to jump, ask adult to cough
If kids can jump, probably not appendicitis
What is the relevance of puritanism in appendicitis?
If peritonitic - need surgery
What is the name of the scoring system used in paediatrics for appendicitis?
ALVARADO
What is Rosvig’s sign?
Press LIF, PTx feels more pain in RIF
Where is McBurney’s point and what is its relevance?
1/3 distance from umbilicus - ASIS
Where tenderness maximal in appendicitis
Bad breath halitosis in a child with acute abdominal pain is a sign of what?
Appendicitis
What age has the highest incidence of appendicitis? When is the second peak?
10-20yr
2nd peak in 60s
Appendicitis can occur at any age, true or false
True
What effect does appendicitis have on:
- Temperature
- HR
- WCC
- CRP
- LFTs
- U+Es
- bHCG
- Low grade fever
- Mild >HR
- Mild >WCC
- > CRP
- Normal LFTs
- Normal U+Es
- Normal bHCG
What imaging is first line for suspected appendicitis in men, fertile women, pregnant women and non-fertile women and children?
Men - CT Pregnant women - MRI Fertile women - US then CT Children - US Non-fertile women - CT (US fertile women is to exclude ovarian causes, not to see appendicitis)
In males under 40yr, if appendicitis is very strongly suspected is CT still required before LAP?
Yes - NICE says CT before LAP
In males over 40yr, what is in the differential for appendicitis?
Perforated caecal tumour
Atypical diverticulitis
Ischemic bowel
What is a faecolith?
Stone of hard poo
Are antibiotics given for appendicitis?
Yes
What are the 5 Ps for causes of ileus?
Post intra-abdo surgery Low potassium Peritonitis Pelvic/spinal fracture Parturition childbirth
How is bowel obstruction classified?
Structural mechanical v paralytic ileus
What are the 3 types of mechanical AKA structural bowel obstruction?
External compression
Wall compression
Something in lumen
What is the commonest and 2nd commonest cause of small bowel obstruction?
1st adhesion
2nd hernia
What cause of bowel obstruction can’t be diagnosed in a virgin abdomen?
Adhesion
What is the commonest and 2nd commonest cause of large bowel obstruction?
1st malignancy
2nd volvulus
What is a stricture? Name 2 causes
Narrowing of the lumen
Due to inflammation
Crohn’s / diverticular
In bowel obstruction, why is the there abdominal distension? Why is there colicky pain? Why is there nausea?
Distension - proximal bowel dilates + swells full of fluid/gas
Colicky pain - increased motility / peristalsis
Nausea - electrolyte imbalance + dehydration
What does bowel distal to the obstruction do?
Carries on as normal until empty - then contracts and becomes immobile
Where are the 2 types of volvulus?
Caecal / sigmoid
Both small bowel obstruction
What is the management of sigmoid volvulus?
Decompress during rigid sigmoidoscope
What is the AXR appearance of volvulus?
Coffee bean
“Strands pulling parts of bowel together” is the description of what?
Adhesion
What is gallstone ileus?
Causes mechanical small bowel obstruction
Complication of cholecystiis
Not a true ileus
Gallstone stuck at ileocaecal valve
Early distension / constipation is a sign pf small or large bowel obstruction?
SBO late distension, late constipation
LBO early significant distension, early constipation
In small or large bowel obstruction is there early or large bilious vomiting?
Small bowel early bilious vomit
Large bowel late bilious then faeculent vomit
What cause of acute abdomen causes tympanic percussion?
Bowel obstruction
In a patient with acute bowel obstruction, change in the character/severity of pain (colicky > constant) suggests what?
Complication: ischemic, perforation, sepsis
What is the normal size of bowel on AXR?
Small bowel 3cm
Large bowel 6cm
Caecum 9cm
What is seen on ABG in bowel obstruction?
Late metabolic acidosis
What imaging is done for bowel obstruction?
AXR + contrast CT
What is the conservative Mx of bowel obstruction?
Analgesia IV fluids with potassium NG tube (suck intestinal decompression) Catheter NBM ('Drip and suck')
What are the indications for surgery in bowel obstruction?
Strangulation Closed loops Haemodynamically unstable Perforation Ischaemia No improvement after 72hr conservative Mx
What drug is contraindicated in bowel obstruction?
Metoclopramide pro-kinetic perforation risk
Gas is produced by _____ metabolism of gut organism
Anaerobic
What are signs of dehydration that can be seen on bloods?
High haematocrit
High lactate
High urea/creatinine
How does the clinical presentation of ileus differ from mechanical bowel obstruction?
Continuous non-colicky abdo pain
What is the management of ileus?
Conservative NG tube
What is the relevance of an incompetent ileocecal valve in bowel obstruction?
Incompetent valve good since it spreads the pressure
Which type of IBD is more associated with strictures and why?
Crohn’s since transmural inflammation
Where in the GIT are diverticulum most common?
Sigmoid
What is a diverticula? What is the aetiology?
Outpouching of got wall
Due to lack of dietary fibre; high intraluminal pressure; mucosae herniate through muscle layers of gut at weak points
What is diverticulosis, diverticular disease and diverticulitis?
Diverticulosis = diverticula present (most asymptomatic incidental finding)
Diverticular disease = symptomatic
Diverticulitis = inflamed diverticula
What is the presentation of diverticular disease?
Altered bowel habit +- left sided pain
What classification system is used in diverticulitis?
Hinchey
grades 1-4
What is the presentation of diverticulitis?
Fever
Altered bowel habit
LHS pain/tender
>HR
How is diverticulitis diagnosed?
CT
(Avoid colonoscopy in the acute setting due to perforation risk)
(If first presentation arrange outpatient colonoscopy)
What is the management of diverticlar disease?
High fibre diet +- antispasmodic PO mebeverine
What is the management of diverticulitis?
Empirical IV ABx
A complication of diverticulitis is an abscess, how is this diagnosed? Who drains it?
CT
Interventional radiologists
What is a Hartmann’s procedure?
Remove sigmoid
Bring out colostomy
Reverse in younger PTx
What surgical procedure is done for perforation in diverticulitis?
Hartmann’s procedure
Define a fistula
Abnormal connection between 2 epithelialized surfaces
What type of fistula can cause bubbles in urine, brown urine and frequent UTIs?
Colovesical
(Surgical mx)
(Comp of diverticulitis)
Aetiology of pancreatitis 50% - 25% - 15% - 10% -
50% gallstone
25% alcohol
15% other
10% idiopathic
What is the aetiology of pancreatitis using the pneumonic?
I idiopathic G gallstone E ethanol T trauma S steroids M mumps / malignancy A autoimmune S scorpion H hypertriglycerideaemia / hypercalcemia E ERCP D drugs: diuretics, azathioprine
Pain in pancreatitis
- Severe or mild
- Constant or colicky
- Radiates where?
- Worse in what position?
- Better in what position?
- Tender or non-tender?
Severe constant Radiates to back (since retroperitoneal) Worse in supine position lying down Relief sitting upright / leaning forward Tender
What signs on the abdomen can be seen in severe pancreatitis?
Cullen’s + Grey Turner’s
What is the diagnosis criteria for acute pancreatitis?
2/3 of: amylase >300 + abdo pain typical of apppendicitis + CT findings
When do you CT scan acute appendicitis?
If unclear Dx OR if no improvement at 48hr (to look for comp/necrosis) OR if suspect necrotizing (severe)
(if amylase >3X upper limit normal don’t need CT scan - can diagnose)
What is the role of US in appendicitis?
US everyone
look for comp / causes
In pancreatitis, if US finds gallstones, what scan is done next?
MRCP
Then ERCP or cholecystectomy with bile duct exploration
What is an index cholecystectomy?
Means within 1wk of admission - in the same admission
What is the Mx of mild pancreatitis?
Analgesia
Antiemetic
Fluid resuscitation - lots 4-6L in 24hr to maintain fluid volume
(Mild pancreatitis usually responds by 48hr)
What is the Mx of severe pancreatitis?
Analgesia Fluid resuscitation HDU/ICU for pulmonary/renal monitoring Correct electrolyte derangement CT to rule out necrosis Prophylactic ABx if necrosis Surgical drainage if infected TPN / enteric nutrition
A complication of pancreatitis ‘capsulated fluid collection around a non-necrotic pancreas that lasts more than 4 weeks’ describes what?
Pancreatic pseudocyst
Is amylase specific to pancreatitis?
No
Is amylase a severity / prognostic indicator in pancreatitis?
No
‘Interstitial edematous’ and ‘acute necrotizing’ are both types of pancreatitis - which is the commonest type of pancreatitis? How can you differentiate them?
Interstitial edematous commonest type
Differentiate by CT
Are antibiotics given to all patients with pancreatitis?
No only if necrotising
If necrotic IV amox + metron + gent
Gallstone pancreatitis typically has a raised ALP + Bn, true or false
True
Alcoholic pancreatitis typically has low MCV
Who is more at risk for chronic pancreatitis - alcoholic acute pancreatitis or gallstone pancreatitis?
Alcoholic - longstanding pancreatic insult
In chronic pancreatitis there is exocrine pancreas insufficiency - what is the management of this?
Creon enzyme replacement
Chronic bowel ischemia ‘angina of the gut’ is caused by what disease process? Is causes pain triggered by what?
Atherosclerosis
Triggered by eating
In acute ischemic bowel, SB usually dies and LB usually lives - why is this?
LB supplied by marginal A collaterals can maintain perfusion
In ischemic bowel, pain is said to be ________
Pain out of proportion of clinical findings
What is the management of ischemic bowel?
Theatre ASAP (Remove dead gut, resect nonviable intestines)
What blood test in the acute abdomen should alert suspicion of ischaemic bowel?
High lactate
What investigation is done for diagnosis in ischaemic bowel?
CT angiogram
The caecal squelch sign is assoicated with what cause of the acute abdomen
Mesenteric adenitis
- but googled it and can’t find this on the internet ???
What antibiotics are given for intra-abdominal sepsis, and what bugs are they against?
Amoxicillin (strep, enterococcus)
Gentamicin (coliforms)
Metronidazole (anaerobes)
What is Mittelschmerz?
Pain associated with ovulation
Mesenteric adenitis
- what age range
- viral or bacterial
- pyrexic or apyrexic
Kids
Viral (often history of recent viral illness)
High fever
Name 2 causes of toxic megacolon
C diff
UC
Hirschsprung’s disease
- Diarrhea or constipation
- What colour vomit
- Missing what
Constipation
Green bile vomit
Missing parasympathetic plexus
Can renal or gallstones be seen on AXR?
Renal
not gallstones
What questions should you ask in a history for PR bleeding?
Every stool or once How much blood Colour of blood Mixed with stool Pain with defecation On blood thinners Loose or hard stool How often pass stool Weight loss