Gastroenterology Flashcards
What is gastro-oesophageal reflux disease?
Symptoms or complications resulting from reflux of gastric contents into the oesophagus or beyond
Why might GORD symptoms be worse at night?
Because of vagal stimulation causing upper oesophageal relaxation
What condition can predispose to GORD?
Hiatus hernia
What cancer can GORD predisposed to and why is this?
Oesophageal cancer either Adenocarcinoma or squamous cell
because the gastric contents of the damages the mucosal epithelial cells and causes oesophagitis
What are risk factors of GORD?
Family history of heartburn
obesity
increased age
hiatus hernia
What are the symptoms of GORD?
name the red flag symptoms of GORD?
Heartburn tightness in chest regurgitation asthma -like symptoms with cough burping
dysphasia
bloating
early satiety
what is the initial investigation of GORD?
A PPI trial of eight weeks and then check for improvement
Following a PPI trial there is no improvement in the patient’s GORD symptoms, what is the next line investigation?
when else would you want to order this investigation for GORD?
OGD endoscopy
if there are any red flag symptoms
What sign may you see on endoscopy that is a precursor to oesophageal cancer?
Barrett’s oesophagus showing cellular metaplasia
What is the management plan with GORD?
Continue PPI (up to x2 doses a day)or have surgery if that is possible
if there is a nocturnal component ranitidine H2 agonist can be used
what is oesophageal cancer?
Mucosal lesions originating in the epithelial cells lining the oesophagus either adenocarcinoma or squamous cell carcinoma
What other two main causes of oesophageal cancer?
Gastro-oesophageal reflux disease and Barrett’s oesophagus
high BMI with an unclear mechanism
What are the risk factors associated with oesophageal cancer?
GORD High BMI male Tobacco use excess alcohol use family history diet low in fibre
What is the main presentation of oesophageal cancer?
Dysphasia it is usually a late presentation with two thirds of the oesophagus occluded
painful swallow and weight loss
What investigation is required to diagnose oesophageal cancer?
what other investigations useful?
OGD with biopsy
and metabolic profile since cancers are usually advanced
What other cancers can cause dysphasia?
Mediastinal cancers :
lung
lymphatic inc. non-Hodgkin’s lymphoma
thymoma
What is oesophageal achalasia?
A disorder of unknown aetiology characterised by aspirations and insufficient lower oesophageal sphincter relaxation due to loss of neurons in the oesophageal myenteric plexus - aucherbach plexus
What is the presentation of oesophageal achalasia?
Aspirations when eating
dysphasia
changing posture when swallowing to help
retro sternal pain and pressure with regurgitation
a gradual weight loss - rapid weight loss indicates malignancy and is a red flag
heartburn is not usually present!
What investigations would you use for oesophageal achalasia?
Upper GI endoscopy + barium swallow
oesophageal manometry
What would you see on an upper GI endoscopy for oesophageal achalasia?
Retained saliva with frothy appearance
What would barium swallow show for oesophageal achalasia?
Delayed swallow with a tapered dilated appearance
What is the management of oesophageal achalasia?
Surgical or pharmacological with Botox and possibly gastrostomy
pharmacological therapy = isorbatide denigrate or CCB (nifiedepine)
What is systemic scleroderma?
Systemic scleroderma is a multisystem autoimmune disease characterised by functional and structural abnormalities of small blood vessels fibrosis of the skin and internal organs as well as the production of autoantibodies
Describe the pathophysiology of systemic scleroderma?
Has a strong genetic component and immunological components (ANA positive in 90%)
immune system activation leading to endothelial cell activation and damage of the endothelium
fibroblasts because increased collagen deposition
activated T cells promote disease by making for pro fibrotic cytokines and down regulating the inhibitory cytokines
What is the presentation of systemic scleroderma in the hands and feet?
Hand and feet swelling
skin thickening
functional loss
What is the presentation of systemic scleroderma in the GI tract?
Heartburn
reflux
bloating
faecal incontinence
What is the presentation of systemic scleroderma in the respiratory system?
dysnopea
dry crackles at bases of lungs
What is the presentation of systemic scleroderma in the vascular system?
Raynaud’s disease
pits and ulcers at the tips of fingers from ischaemia
What investigations are required in oesophageal scleroderma?
Serum antibodies:
ANA - most common 90%
anti-SCL
anti- rna polymerase
U+E (renal involvement) urine microscopy (to check the renal crisis, proteinuria)
ESR and CRP are usually normal
pulmonary function tests (interstitial lung disease)
chest x-ray (interstitial lung disease)
ECG (arrhythmias which show cardiac involvement)
echocardiogram (yearly test for pulmonary hypertension)
barium swallow ( decreased peristalsis)
What is the management of oesophageal scleroderma?
Manage any heartburn symptoms with PPI
increased motility using erythromycin or domperidone (pro kinetics)
What is a common complication of oesophageal scleroderma?
what is the treatment?
Bacterial overgrowth is causing diarrhoea and weight loss
treat with cephalexin and metronidazole
What is classed as a peptic ulcer
A breakdown in the mucosal lining of the stomach and duodenum reaching the submucosa
an ulcer is classed at 5 mm anything smaller or more shallow is considered an erosion
What are the protective factors of the stomach for peptic ulcer disease?
Prostaglandins
mucus
HCO3
mucosal blood flow
What are the damaging factors of stomach for peptic ulcer disease?
Gastric acid
Patsy
H. pylori
NSAIDs
What are the symptoms of peptic ulcer disease?
Upper epigastric pain exacerbated by eating (gastric) or 2 to 3 hours after eating (duodenal)
then maybe posterior radiation of pain indicating penetration to the pancreas
epigastric tenderness
what would be your first line investigations for peptic ulcer disease?
Urea breath test or stool antigen test for H pylori
but in those >55y you may consider going straight to endoscopy
FBC - check for blood loss (microcytic anaemia)
what is the management of an active bleeding peptic ulcer?
Stop any NSAIDs
endoscopy to stop the bleeding plus PPIs
What is the management of pt with peptic ulcer which has no bleeding but is positive for H. pylori?
Triple therapy of omeprazole clarithromycin and metronidazole
what would you do if the H pylori Cannot be eradicated?
Long-term acid suppression with PPI and H2 antagonists if needed
How to manage patient which has a peptic ulcer with no bleeding and negative H. pylori?
Treat the underlying cause and give PPIs treatment usually lasts 4 to 8 weeks
what is the management of peptic ulcer if it isInduced by NSAIDs?
Misoprostol
What all gastro-oesophageal varicies?
Related collateral blood vessels that develop as a consequence of portal hypertension usually due to cirrhosis
What is the pathophysiology behind gastro-oesophageal varices?
Increased hepatic vein pressure occurs as liver function deteriorates (usually due to alcohol or hepatitis B) causing the dilation of blood vessels
what conditions can indicate a presence of gastro-oesophageal varices?
Alcoholic hepatitis
hepatitis B or C
cirrhosis
hepatic encephalopathy
What are the symptoms of gastro-oesophageal varices?
Symptoms of cirrhosis: ascites jaundice spider angiomas and caput medusa haemoptysis or haematochezia
What investigations would you do to diagnose varices?
And OGD
What investigations should you run on someone who has gastro-oesophageal varices?
full blood count (check for bleeding and thrombocytopenia indicate portal hypertension and splenomegaly)
coagulation profile (assesses function of liver but also risk a bleed)
hepatic venous pressure gradient (assesses portal hypertension)
blood type and crossmatch (in case of life-threatening bleed)
you should also attempt to find the cause of the cirrhosis of this has not been established:
serum LFTs ( AST ALT Alk Phos Billi all ++)
hepatitis B antigen – HBsAg
Hepatitis C Ig - HCV IgG
How would you treat an acute haemorrhage caused by rupture of gastro-oesophageal varices?
Supportive therapy ABCDE
and vasoactive drugs (vasopressin or another pressin)
endoscopic therapy
consider using BBlocker propranolol as adjunct
What procedure should be performed in anyone who has an acute haemorrhage caused by gastro-oesophageal varices and is high risk of getting it again?
Trans-jugular intrahepatic Porto systemic shunt aka tips
How would you treat large varices which are not bleeding?
Binding and ligation with a non-selective beta-blocker
how would you treat small varices which are not bleeding?
Beta-blocker and endoscopic surveillance
How would you treat someone who has portal hypertension but has not yet developed varicies?
Endoscopic surveillance and vasoactive drugs
how would you treat someone Who has cirrhosis but has not yet developed varices or portal hypertension?
Endoscopic surveillance
What is a Mallory Weiss tear?
A tear or laceration in the oesophagus caused by a sudden increase in the pressure gradient
it is usually spontaneous and self-limiting
What is the most common location for a Mallory Weiss tear?
Near the gastro-oesophageal junction
What are the risk factors for Mallory Weiss tear?
Conditions predisposing to vomiting retching straining including from coughing chronic cough hiatal hernia endoscopy alcohol with excessive vomiting
what investigations are required in a Mallory Weiss tear?
Full blood counts
OGD
if severe crossmatch and save
plus…
urea and creatinine – monitoring severity please
a T assessing for liver disease
PT/INR consider anticoagulation
chest x-ray normal in an uncomplicated Mallory Weiss tear
How would you manage a Mallory Weiss tear?
ABCDE management
when giving fluids make sure bilateral IV
if severe intubate and give phytomenadione IV aka Vit K
endoscopic clip placement +/- adrenaline - always before 24h even if not severe
plus…
pantoprazole and promethazine (antiemetic)and erythromycin (contracts stomach) pre surgery
What is gastritis?
The histological presence of gastric mucosal inflammation
What is gastropathy?
Lesions characterised by minimal or no inflammation
What are the causes of gastritis?
H. pylori (causes acute or chronic non-erosive gastritis)
erosive (NSAIDs or alcohol induced)
stress induced (in the critically ill on mechanical ventilation> 48 hours or coagulopathy)
autoimmune
phlegomonus (S. aureus, strep, e coli)
What are symptoms of gastritis?
Dyspepsia
epigastric discomfort
nausea and vomiting
loss of appetite
lack of red flags
What is the management of gastritis caused by H. pylori?
Triple therapy of lansoprazole clarithromycin and metronidazole
What is the management of gastritis caused by erosive causes?
Discontinue exposure use PPI or H2 antagonist
What could you give to someone who is at risk of gastritis?
Ranitidine
misoprostol
What type of cancer is stomach cancer?
adenocarcinoma
What are some risk factors for developing stomach cancer?
NHS anaemia H. pylori 50 to 70 years family history smoking
What are symptoms of stomach cancer?
Epigastric pain – an early symptom lymphadenopathy – see virchows node nausea dysphagia lower GI bleeding and Melina
What investigations are necessary for stomach cancer?
Endoscopy and biopsy
What is the management of stomach cancer?
Pre-and post op chemotherapy or radiotherapy
surgery
consider immunotherapy
What is viral gastroenteritis?
Acute inflammation of the lining of the stomach and intestines caused by an enteropathic virus
What viruses cause gastroenteritis?
norovirus
rotavirus
cytomegalovirus – significant in immunocompromised groups
What risk factors are associated with viral gastroenteritis?
Exposure to contaminants or close contact with someone infected
living in close quarters such as care homes
Poor hygiene
extremities age – causes more severe dehydration
comorbidities
immunocompromised groups
when would you need to investigate viral gastroenteritis?
If there is severe volume depletion
What investigations would you perform for viral gastroenteritis?
Full blood count - is the white cell count elevated indicating a bacterial or parasitic infection are the signs of anaemia indicating a chronic cause such as IBD
U+E- check renal function
consider a stool sample for culture
When would you perform a stool culture for patients with viral gastroenteritis?
Blood or pus installs high fever diarrhoea lasting two weeks history of foreign travel persistent antibiotic use
What is management of viral gastroenteritis?
Dehydration is mild-to-moderate: oral rehydration salts severe: IV fluids
antiemetics may be used but antidiarrhoeal should not routinely be used
What is IBS?
A chronic condition characterised by abdominal pain and bowel dysfunction without the presence of structural abnormalities
What are risk factors for developing IBS?
Female
previous enteric infection
history of physical or sexual abuse
What symptoms does IBS carry?
Cramping abdominal pain pain in lower/middle abdomen mild/severe pain altered bowel habit relief of symptoms on defecation abdominal bloating/distension mucus-y stool
How would you diagnose IBS?
IBS would be a diagnosis of exclusion, a history of typical symptoms is suggestive of IBS
differentiate from coeliac and IBD
stool cultures will be negative
What tests differentiate IBS from coeliac disease?
Anti-endomyseal +ve in coeliac
Anti- tTG antibodies +ve in coeliac
what tests would differentiate from IBD?
Faecal calprotectin
flexible sigmoidoscopy or colonoscopies
How do you treat IBS?
Management must be symptomatic
if constipated - lactulose
if diarrhoea – loperamide (antidiarrhoeal)
pain or bloating – dicycloverine (antispasmodic)
CBT or hypnotherapy is also useful
high-fibre diets and eliminating triggers
SSRIS such as citalopram
What is Crohn’s disease?
and inflammatory bowel disease causing transmural inflammation of the GI tract which can involve any or all of the GI tract
What histopathological findings would you find for crohns disease?
Transmural inflammation
skip lesions
can be anywhere in the GI tract
where Is most common for Crohn’s disease to occur?
Terminal ileum and peri-anus
What is the presentation of Crohn’s disease?
Abdominal pain prolonged diarrhoea perianal lesions fatigue weight loss abdominal tenderness
can have some mucous blood and purse install but this is not a typical presentation
fever from inflammation or as a complication
What are perianal lesions?
Skin tags
fistula
What are the more common complications of Crohn’s disease?
Obstruction – from fibrosis
perforations and fistula – due to sinus tracts caused by inflammation
What investigation is diagnostic for Crohn’s disease?
Flexible sigmoidoscopy (colonoscopies) with biopsy and histological examination
A patient presents with symptoms of IBD disease what are the first line investigations you would do as a GP?
FBC – may find anaemia and increased white cell count
iron studies, B12, folate
comprehensive metabolic panel albumin, calcium, magnesium, phosphate all reduced
CRP, ESR
Faecal calprotectin - raised, marker of bowel inflammation
you may want to do a stool test
you may consider imaging from:
x-ray (obstruction)
CT or MRI (lesions, bowel thickening, accesses/fistulae)
How would you manage crohns ?
Budesonide (steroid) or 5 ASA therapy
Azothioprine + CS
methotrexate and folic acid
biologics and CS reduction
What is ulcerative colitis?
an inflammatory bowel disorder characterised by its involvement of the rectum and extending approximately
What are the risk factors forInflammatory bowel disease?
Ages 15 – 40 or 60 – 80
family history
white ancestry
What are the symptoms of ulcerative colitis?
Most common symptom is rectal bleeding and blood in stool
diarrhoea abdominal pain malnutrition and weight loss are more common in Crohn’s disease
What vitamin deficiencies occur in ulcerative colitis?
Vitamins ACD he
beta-carotene, magnesium, zinc
What would imaging show for Crohn’s disease?
x-ray (obstruction)
CT or MRI (lesions, bowel thickening, accesses/fistulae)
What would imaging show for ulcerative colitis?
dilatoed loops with air or fluid,
free air suggests a perforation dilation of loops over 6 cm suggests toxic megacolon
What are the histopathological findings of ulcerative colitis?
Only rectal involvement with continuous and uniform diffuse erythema biopsy shows : mucosal involvement mucosal depletion absence of granulomata anal sparing
What is the management for ulcerative colitis?
mesalazine (mainstay for remission)
hydrocortisone or pred +/- tacrolimus
IV hydrocortisone (in acute flare)
In recurrent disease:
Thiopurines (azothioprine)
Biologics/TNF a inhibitor (infliximab)
colectomy
What is fulminant ulcerative colitis?
Sudden and extensive inflammation which can be life-threatening
What are symptoms of fulminant ulcerative colitis?
6+ bloody stools daily
evidence of toxicity:
- fever
- tachycardia
- anemia
- ++ESR
what is the management of fulminant ulcerative colitis?
Investigate with ultrasound and emergency colonoscopies
IV corticosteroids and IV fluids
a stable enough start infliximab and cyclosporin if not rush for a colectomy
What is toxic megacolon?
A potentially lethal complication of acute colitis with total or segmental non-obstructive chronic distension associated with systemic toxicity
What are the risk factors for toxic megacolon?
Inflammatory bowel disease infected colitis immunosuppression discontinuation of IBD medication anti-motility agents
How does toxic megacolon present?
Fever tachycardia hypotension
abdominal pain tenderness and dissension
diarrhoea
mental status changes
What investigations should you perform?
Abdominal x-ray – die rotation of over 6 cm
stool studies
full blood count (+white cell count - haemacrit)
serum electrolytes (- magnesium and potassium due to volume loss)
serum albumin (- due to volume last)
serum lactic acid if ischaemic
What is the initial management of toxic megacolon?
ABCDE
Nil by mouth IV fluid recess
broad-spectrum antibiotics
NG decompression
rancour myosin – if presumed CDF
IV hydrocortisone – history of inflammatory colitis
surgery if no improvement after 72 hours
What is mesenteric ischaemia?
An umbrella term for disorders which cause a decrease in blood flow to the GI tract
it can be acute or chronic, occlusive or non-occlusive, transient or fulminant
What are the risk factors for mesenteric ischaemia?
Old-age smoking history however quite liberal state atrial fibrillation myocardial infarction structural heart disease history of vasculitis
What is a presentation of mesenteric ischaemia?
Abdominal pain Melena – due to mucosal sloughing diarrhoea abdominal tenderness weight loss
abdominal bruit may be heard
What is a first-line diagnostic test for mesenteric ischaemia?
CT
What would a CT show for mesenteric ischaemia?
Thickening
dilatation
pneumatosis intestinalis
thumbprint sign – showing mucosal oedema or haemorrhage
which artery does mesenteric ischaemia usually affect?
Superior mesenteric artery
What is diverticular disease?
A herniation of the mucosa and submucosa through the muscular layer
it is any clinical state caused by symptoms relating to colonic diverticula
symptoms ranging from asymptomatic to severe uncomplicated
What is the most common complication of diverticular disease?
Diverticulitis
What is diverticulitis?
Inflammation of a diverticulum which may be caused by infection
What are complications of diverticular disease?
(Diverticulitis)
segmental colitis lower GI bleed abscess perforation and peritonitis fistula obstruction
What are risk factors of diverticular disease?
Low dietary fibre
anyone over the age of 50
What is the presentation of diverticular disease?
It is usually asymptomatic until there’s diverticulitis
but may have some IBS type symptoms of bloating and constipation
What are the symptoms of diverticulitis?
Lower quadrant abdominal pain
fever
guarding
leucocytosis
What are the diagnostic tests for diverticular disease?
Contrast anime shows diverticulitis abscesses
if unclear go to sigmoidoscopy
how would you Diagnose acute diverticulitis?
CT with contrast
How would you treat diverticular disease?
If asymptomatic no treatment
if symptomatic:
high fibre diet and supplements
any symptoms of bacterial infection require broad-spectrum antibiotics
How would you manage symptomatic diverticulitis?
Analgesia oral antibiotics (moved to IV if not getting better)
What is appendicitis?
An acute inflammation of the veniform form appendix most likely caused by obstruction of the lumen of the appendix
what causes the obstruction in appendicitis?
faecolith
stool
infection
lymph drainage
What are the risk factors for acute appendicitis?
There are no real risk factors however:
child/teen
low dietary fibre
smoking
What is the presentation of appendicitis?
Constant made abdominal pain that moves to the right quadrant pain worse on coughing and movement tenderness at McBurney's point rebound tenderness may be present anorexia
nausea fever decreased bowel sounds on the right side
be aware of tachycardia as it’s a sign of perforation
What does tachycardia in a patient with suspected appendicitis indicate?
Perforation
What is the diagnostic test of appendicitis?
CT
What is the management of an uncomplicated appendicitis?
Appendectomy (adjunct IV antibiotics)
antibiotic only therapy for patients who wish not to have surgery
what is the management of Appendicitis complicated by perforation or abscess?
IV antibiotics appendectomy and supportive care
drainage may be necessary if there is an abscess
What are the three main types of hernia?
Umbilical
inguinal
hiatus
what is an umbilical hernia?
A defect of the interior wall fascia occurring when the umbilical ring fails to close and the peritoneal sack protrudes
What are the risk factors for an umbilical hernia?
Low birthweight
African or African-American ethnicity
What is the presentation of an umbilical hernia?
Presents at birth with a bolt at the umbilicus
becoming larger or tense during movement or crying
stretched skin
What features would you find on examination for an umbilical hernia?
easily reducible
on examination the ring of the fascia can be felt around the defect
If an umbilical hernia presents as a tender abdominal mass what does this mean?
It’s incarcerated
What is the management of an umbilical hernia?
First attempt reduction
asymptomatic and small:
observe and offer elective outpatient surgical repair otherwise move to ASAP surgical repair
What is an inguinal hernia?
The most common type of hernia
it is a protrusion of abdominal or pelvic contents through her dilated internal inguinal ring to the external inguinal ring
What is the presentation of an inguinal hernia?
Easily visible and palpable bulge
groin discomfort or pain if the hernia is bulging
groin mass
may be confused with pathologies of the testicles
If a patient presents the tender distended abdomen with absent bowel sounds who has had a past history of groin pain what could this be?
Strangulated hernia causing an acute abdomen
What investigations are necessary for an inguinal hernia?
Usually the diagnosis is clinical if you are uncertain and ultrasound scan of the groin or CT
What is the management of a strangulated inguinal hernia?
Surgery with IV/IM cephalexin prophylaxis if open repair
What is the management of a large or symptomatic hernia
Surgery unless a patient is nonsurgical then a truss can be worn (device that compresses over inguinal canal)
What is the management of a small asymptomatic inguinal hernia?
Observation
What is a hiatus hernia?
Protrusion of intra abdominal contents through an enlarged oesophageal hiatus of the diaphragm most commonly containing a portion of stomach
What are the risk factors for a hiatus hernia?
Anyone over the age of 50
obesity
previous GI procedure
intra-abdominal pressure increases
What is the presentation of a hiatus hernia?
Heartburn
regurgitation
GORD like
How do you diagnose a hiatus hernia?
A barium swallow
endoscopy
How do you treat a hiatus hernia?
PPI and lifestyle changes
surgical repair
if there’s obstruction resus and urgent surgical repair
What is large bowel obstruction?
Mechanical interaction occurring to the flow of the intentional contents it is a surgical emergency
What can cause large bowel obstruction?
Colorectal cancer
colonic Volvos
benign structure such as diverticular disease
foreign body
What are risk factors for large bowel obstruction?
older age female institutionalisation mental illness Megacolon
What is the presentation of large bowel obstruction?
Colicky abdominal pain
abdominal distension
tympanic handling
change in bowel habits no or very little faeces or flatus
rectal bleeding - indicates malignancy
abnormal bowel sounds can be increased frequency or absent in advanced disease
what does hard faeces on DRE in the context of large bowel obstruction mean?
Faecal impaction
What does an empty rectum mean in the context of a DRE in large bowel obstruction?
Proximal obstruction
Why should you perform a faecal occult blood in the context of large bowel obstruction?
To exclude barrel malignancy
what are symptoms of a Large bowel perforation?
Constant pain which is worsening
worse on movement or coughing or deep breathing
fever
abdominal rigidity – peritonitis secondary to perforation
What is a diagnostic test for a large bowl obstruction?
Plain abdominal x-ray
What is the first test you should do if you suspect perforation in large bowel obstruction
Erect chest x-ray
Apart from imaging what other tests are useful in large bowel obstruction?
Full blood count – WCC for infection anaemia in malignancy
serum electrolytes and renal function – check renal function
serum amylase – raised in intra abdominal events
you suspect abdominal perforation what investigations are indicated?
Chest X ray (USS abdominal if in unstable situation)
Septic screen
FBC, LFT and U+E
What is the management of large bowel obstruction?
ABCDE - consider blood products if theres coagulopathy catheter monitoring urinary output broad-spectrum antibiotics presurgery NG decompression! surgery
NO OPIATES
What is volvulus?
A loop of interesting twists around itself and its mesentery
causing a bowel obstruction
Where are volvulus common?
In the sigmoid or coecal
What classic sign is found on CT/x-ray for a volvulus?
a coffee or kidney bean shape
What are risk factors for a volvulus?
intestinal malrotation
enlarged colon
hirsprungs
adhesions form prev. surgery
What is a small bowl obstruction?
Mechanical disruption in the patency of the GI tract resulting in vomiting which may be pillars absolute constipation and abdominal pain
What are common causes in adults for small Bowel obstruction?
Previous surgery inguinal hernia – other hernias Crohn's disease intestinal malignancy appendicitis
what are common causes for children for small bowel Obstruction?
Appendicitis
inrucusseption
intestinal atresia
volvulus
What is the presentation of small bowel obstruction?
Failure to pass glasses or stool abdominal pain vomiting abdominal tenderness and distension if there's perforation peritonitis
there may be fever tachycardia and lethargy from inflammation and dehydration
What is the diagnostic investigation for small bowel obstruction?
CT abdominal
What is the gas distribution you would see on imaging in the bowels in a partial small-bowel obstruction?
Gas throughout the abdomen
What is the gas distribution you would see on imaging in the bowels in a complete small-bowel obstruction?
No distal gas and staggered air - fluid
What is the gas distribution you would see on imaging in the bowels in a complicated small-bowel obstruction?
Complicated by a perforation will be free air under the diagram
if complicated by ischaemia there will be thumb printing sign
What is the management of partial small-bowel obstruction?
Fluid recuss NG decompression antiemetic (ondesatron) antispasmodic (loperamide) if a more severe partial opiate analgesia
surgery if no change after 48 to 72 hours
What is the management of a complete small-bowel obstruction?
NG decompression
morphine analgesia
perioperative antibiotics
Laparotomy
if the candidate is nonsurgical then treat as a partial obstruction