Gastrointestinal Flashcards
Symptoms and signs of achalasia?
- Insidious onset
- Intermittent dysphagia
- Weight loss
- Heartburn
- Chest pain
- Aspiration pneumonia
- Malnutrition
Investigation for achalasia?
- CXR - widened mediastinum, double heart border, absence of gastric bubble
- Barium swallow
- Endoscopy - exclude malignancy
- Manometry - gold standard
Symptoms of acute cholangitis?
(aka ascending cholangitis)
Charcot’s Triad
• RUQ pain
• Jaundice
• Fever with rigors
(Reynolds’ pentad, add)
• Confusion
• Septic shock (hypotension)
What is the cause of acute cholangitis?
Bile duct obstruction
• Gall stones
• Tumour
• Iatrogenic
Increased pressure in duct brings bacteria in contact with blood - infection
Investigation for acute cholangitis?
- Bloods - raised WCC, CRP and LFTs
- USS - cholangitis vs cholecystitis
- => (if -ve) CT => (if -ve) MRCP
- ERCP - gold standard by finding stones (and therapeutic)
Management for acute cholangitis?
- Broad spectrum ABx + biliary decompression non-surgical: ERCP => Lithotripsy if too big
- Broad spectrum ABx + biliary decompression - surgical: Cholecystectomy
(consider analgesia)
Symptoms of alcohol withdrawal?
- Insomnia and fatigue
- Palpitations
- Nausea, vomiting, headache
- Anorexia
- Depression
- Delerium tremens (anxiety, tremor, sweating, hallucinations)
Management for alcohol withdrawal?
- Benzodiazepines (chlordiazepoxide)
• Barbiturates if severe
• Pabrinex to prevent W-K syndrome
• Antipsychotic (haloperidol) if psychotic e.g. delerium tremens
What 3 forms of liver disease is caused by excessive alcohol intake?
- Alcoholic fatty liver (steatosis)
- Alcoholic hepatitis
- Chronic cirrhosis
Symptoms and signs of alcoholic hepatitis?
- Nausea, malaise, right hyp. pain, low-grade fever
- Jaundice
- Swollen ankles
- GI bleed
- Palmar erythema
- Gynaecomastia
- Dupuytren’s contracture
- Malnutrition
- Hepatomegaly
- Facial telangiectasia
- Spider naevi
Investigation for alcoholic hepatitis?
- Bloods - AST, ALT, FBC, U+Es, prolonged PT
- USS - check for malignancy
- Endoscopy - varices
- Liver biopsy - gold standard
- EEG - encephalopathy
Management for alcoholic hepatitis?
- Alcohol abstinency + withdrawal management
• Nutrition + vitamin supplementation (zinc, thiamine, Vit C) - be careful with re-feeding syndrome
• Immunisation - Corticosteroids
- Diuretics (furosemide and spirinolactone) - ascites
- Pentoxifylline - hepatorenal syndrome
Nutrition
• Oral/NG feeding
• Protein restriction (unless encephalopathic)
What is amyloidosis of the cerebral cortex and cerebral blood vessels called?
- Cerebral cortex - Alzheimer’s
* Cerebral blood vessels - amyloid angiopathy
Outline the 3 types of amyloidosis?
Type AL
• Primary amyloidosis
• Monoclonal immunoglobulin light chains
• Affects kidneys, heart, nerves, gut, vascular
Type AA
• Secondary amyloidosis
• Serum amyloid A protein
• Affects kidneys, liver and spleen
Type ATTR • Familial amyloidosis • Genetic-variant transthyretin • Sensory or autonomic neuropathy • Renal or cardiac
Presentation of amyloidosis? • Renal • Cardiac • GI • Neurological • Skin • Joints • Haematological
- Renal - nephrotic syndrome
- Cardiac - restrictive cardiomyopathy
- GI - macroglossia
- Neurological - neuropathy
- Skin - waxy skin, purpura around eyes
- Joints - painful, asymmetrical enlargement
- Haematological - bleeding tendency
Investigation for amyloidosis?
- Serum immunofixation - AL
- Urine immunofixation - AL
- Bone marrow biopsy - AL
- SAP scan
- Tissue biopsy - gold standard (Congo red stain => pink (green in polarised light)
Management for anal fissure?
Acute
1. Conservative - increase fibre + fluid, laxatives
2. Lidocaine ointment, GTN
• Diltiazem if GTN headaches
Resistant
1. Botox injection
• or sphincterectomy
2. Anal advancement flap
Symptoms and signs of appendicitis?
- Periumbilical pain => right iliac fossa
- Anorexia
- Vomiting
- Diarrhoea
- Furred tongue
- Tachycardia, fever, shallow breath
- Foetor (bad breath)
- Guarding, rebound tenderness
- Rovsing’s, Psoas and Cope sign
What are Rovsing’s, Psoas and Cope signs?
- Rovsing’s - palpation of left iliac fossa causes more pain than right
- Psoas - extending hip causes pain (retrocaecal appendix)
- Cope - flexion and internal rotation of hip causes pain (appendix close to obturator internus)
Investigations for appendicitis?
- FBC - leukocytosis
- USS - not always visualised
- Abdominal/pelvic CT - gold standard, but fatal delay possible
Management for appendicitis?
- Appendectomy (laparoscopy)
2. ABx for 24 hours post-surgery (cefuroxime/metronidazole)
What are the 2 types of autoimmune hepatitis?
Type 1 - classic
• ANA, ASMA, AAA, anti-SLA
• all age groups (mainly young women)
Type 2
• ALKM-1, ALC-1
• Girls and young women
Extra signs of autoimmune hepatitis?
Cushingoid features
Investigation for autoimmune hepatitis?
- Bloods (High LFTs but low albumin, antibodies, high PT, low Hb, platelets and WCC)
- Liver biopsy - diagnostic
- USS to visualise lesions
- ERCP - rule out primary sclerosing cholangitis
Symptoms of Barrett’s oesophagus?
- Retrosternal pain
- Haematemesis
- Water-brash (sour taste)
- Burning pain when swallowing, dysphagia
- Bloating, belching
Investigation for Barrett’s oesophagus and what do you see?
OGD and biopsy
• Lower third of oesophagus
• Metaplastic columnar epithelium
• Goblet cells present
Management for Barrett’s oesophagus?
Non-dysplastic
• PPI + surveillance
Low grade
• Radiofrequency ablation
• Nodular - endoscopic mucosal resection
High grade (add to low grade)
• PPI
• Second-line: oesophagectomy
Presentation of cholangiocarcinoma?
(bile duct cancer) • Jaundice • Pale stool • Dark urine • Pruritus • Systemic malignancy signs • Palpable gallbladder (Courvoisier's Law - unlikely due to gallstones where pancreatic or biliary tree cancer is more likely) • Hepatomegaly
Investigation for cholangiocarcinoma?
- Bloods - high ALP + GGT, CA19-9 (also for pancreatic cancer) high
- Abdo USS (benign vs malignant)
- ERCP - bile cytology and tumour biopsy
- CT/MRI/bone scan - staging
Relation of 3 ‘gallbladder’ conditions with Charcot’s triad?
- Biliary colic (gallstone) - RUQ pain
- Cholecystitis - RUQ pain, fever
- Cholangitis - RUQ pain, fever, jaundice
Signs of cholecystitis?
- Murphy’s sign (only positive if the same test in the LUQ doesn’t cause pain)
- Localised peritonism - guarding/rebound tenderness
- Tachycardia
- Pyrexia
Investigation for cholecystitis?
- Bloods - raised WCC, CRP and LFTs
- USS - diagnostic if sepsis not suspected
- CT/MRI - diagnostic if sepsis supected (can find perforation)
- MRCP if others are negative with abnormal LFTs
- Endoscopic ultrasound
When is cirrhosis “decompensated”?
Complicated by J BAE • Jaundice • Bleeding varices • Ascites • Encephalopathy
What’s the most common cause of cirrhosis in the UK and worldwide?
- UK - chronic alcohol misuse
* Worldwide - hep B/C
Which condition associated with OBESITY, DIABETES, total parenteral nutrition and drugs can cause CIRRHOSIS?
Non-alcoholic steatohepatitis (NASH)
What are the investigations for cirrhosis?
- Bloods - low platelets and Hb (hypersplenism from portal hypertension), high LFTs but low albumin, prolonged PT, high AFP
Check for cause
• Caeruloplasmin low in Wilson’s disease
• Iron studies
• ANA, ASMA (autoimmune)
- Ascitic tap (> 250 = spontaneous bacterial peritonitis)
- Liver Biopsy - diagnostic (fibrosis, nodular)
- Imaging to detect complications
- Endoscopy for varices
Describe the grading used to estimate prognosis in cirrhosis/chronic liver disease?
Child-Pugh grading
• 1, 2 or 3 given to the following
- Albumin
- Bilirubin
- PT
- Ascites
- Encephalopathy
Class A: 5-6
Class B: 7-9
Class C: 10-15
Management for cirrhosis?
1 - ? treatment for: encephalopathy, ascites, SBP, portal hypertension
2 - ?
- Treat underlying cause
- Encephalopathy - lactulose and phosphate enema, prevents ammonia absorption
- Ascites - sodium restriction and diuretic therapy for ascites
- SBP - ABx (cefuroxime and metroniazole), prophylaxis
- TIPS shunt reduces portal hypertension
- Liver transplant
What is the drug for paracetamol OD?
IV N-acetylcysteine
What causes coeliac disease?
Sensitivity to gliadin component of gluten
What happens to the intestinal cells in coeliac disease?
- Subtotal villous atrophy
* Crypt hyperplasia
Symptoms and signs of coeliac disease?
- Abdominal distention
- Steatorrhoea
- Tireness, malaise, weight loss
- Failure to ‘thrive’ in children
- Signs of anaemia
- Signs of maltnutrition (short, wasted buttocks in children)
- Itchy blisters on elbows, knees, buttocks (dermatitis herpetiformis)
Investigations for coeliac disease?
- FBC - iron deficiency anaemia
- IgA-tTG (tissue transglutaminase) - diagnostic
(IgG anti-gliadin, IgG anti-endomysial - diagnostic if IgA doesn’t work - check Ig levels to avoid false negatives)
- Small-bowel histology (biopsy) - gold standard
- Stool - exclude infection
- D-xylose test - reduced urinary excretion => small bowel malabsorption
Management for coeliac disease?
- Gluten-free diet
• Calcium, vitamin D, iron supplements - Refractory => referral
- Crisis => rehydration, correct electrolyte abnormalities, corticosteroids
Outline the distribution of colorectal cancer?
- 60% rectum and signmoid
- 30% descending colon
- 10% rest of colon
Outline Duke’s staging of colorectal cancer?
A - contained in bowel B - grown through muscle layer of bowel C1 - regional lymph nodes C2 - apical node positive D - organ metastasis
Symptoms and signs of colorectal carcinoma?
- Change in bowel habit
- Rectal bleeding
- Tenesmus - sensation of incomplete emptying
- (Right sided presents later, anaemia symptoms)
- 20% present as emergency due to large bowel obstruction or perforation
- Abdominal mass
- Low-lying rectal - palpable on DRE
- Metastatic - hepatomegaly, shifting dullness (ascites)
Investigations for colorectal carcinoma?
- FBC - anaemia, LFTs, CEA
• FIT screening - Colonoscopy - ulcerating lesions (biopsy for confirmation)
- Double-contrast barium enema
- Contrast CT thorax, abdomen, pelvis - for metastases
Crohn’s characterisations
- Th1 mediated - TNF-alpha
- Inflammation anywhere from mouth to anus (40% in terminal ileum)
- Can affect all layers - transmural
- Patchy
- Cobblestone appearance
- Abscesses, fissures and fistulae
Symptoms and signs of Crohn’s disease?
- Crampy abdominal pain
- Diarrhoea
- Fever, malaise, weight loss
- RIF pain - inflammation of terminal ileum
- Clubbing
- Mouth ulcers
- Perianal skin tags, fistulae, abscesses
- Uveitis, seronegative arthritis, erythema nodosum, anaemia
Investigations for Crohn’s disease?
- Bloods - anaemia, normal/low iron, low albumin, high ESR, normal/high CRP
- Stool microscopy - exclude infective colitis
- Abdo XR - check toxic megacolon
- CXR - perforation
- Small-bowel barium follow-through - strictures, rose-thorn appearance
- Endoscopy and biopsy - differentiate UC and CD (biopsy: transmural, granulomatous inflammation, fissuring ulcers, lymphoid aggregates, neutrophil infilitrates)
Management of acute exacerbation of Crohn’s?
- Fluid resus
- IV/oral corticosteroids
- 5-ASA analogues e.g. mesalazine
- Immunosuppresion e.g. Azathioprine, reduce relapse
- Anti-TNF agents e.g. Infliximab, maintain remission
Management for long-term Crohn’s?
- Corticosteroids for acute exacerbations
- 5-ASA analogues
- Immunosuppression e.g. Azathioprine, reduce relapse
- Anti-TNF agents e.g. Infliximab, maintain remission
- Stop smoking, dietician referral, education
- Surgery indiciated by failure of medical treatment - resection of bowel and stoma formation
What is the difference between diverticulosis, diverticular disease and diverticulitis?
Diverticulosis - presence of diverticulae outpouchings of the colonic mucosa and submucosa through the muscular wall of the large bowel
Diverticular disease - diverticulosis + complications e.g. haemorrhage, infection
Diverticulitis - acute inflammation and infection of diverticulae
Outline the Hinchey Classification of Acute Diverticulitis?
Ia - phlegmon (diffuse inflammation with purulent exudate)
Ib and II - localised abcess
III - perforation and purulent peritonitis
IV - faecal peritonitis
What causes diverticular disease?
- Low-fibre diet
- High colonic intraluminal pressure
- Herniation of mucosa and submucosa through muscle layers
Symptoms of diverticular disease?
- PR bleeding
- Diverticulitis - LIF pain, fever
- Diverticular fistulation - pneumaturia, faecaluria, recurrent UTI
Investigations for diverticular disease?
- FBC - polymorphonuclear leukocytosis (increased WCC)
- CT - DIAGNOSTIC in acute setting
- Colonoscopy - establish source in acute bleeding
- Barium enema - ONLY when symptoms have resolved
Management for diverticular disease?
• Analgesia
• ABx
• Low-residue diet
(• IV fluids, IV Abx, blood transfusion if GI bleed)
Abscess >3cm, unresponsive to IV ABx
• Radiological drainage/surgery
Recurrent or uncontrolled haemorrhage
• Hartmann’s procedure - proctosigmoidectomy leaving stoma
• One-stage resection + anastomosis - with/without defunctioning stoma
What does IBS involve (symptoms/criteria)?
- Recurrent abdominal pain/discomfort
- > 6 months of previous year
• Relieved by defection and associated with altered bowel frequences AND Associated with 2 of: • Altered stool passage • Abdominal bloating • Worse on eating • Passage of mucous
Signs of IBS?
May have similar red flags to colon cancer (> 6 month history, weight loss, anaemia, PR bleeding, late onset - must be excluded)
- Abdomen may appear distended
- Mildly tender on palpation in one/both iliac fossae
Investigation for IBS?
Mainly history and exclusion
• FBC - normal
• Stool - normal
• Anti-endomysial, anti-tTG - negative (abnormal suggets coeliac)
• AXR - normal (abnormal suggests obstruction)
• Flexible sigmoidoscopy - normal (abnormal suggests IBD)
• Urease breath test - normal (excluse H. pylori)
• Colonscopy - normal
• Faecal calprotectin - < 40 more likely IBS than IBD
Management for IBS?
- Lifestyle + dietary changes
• Constipation predominant - laxatives
• Diarrhoeal predominant - anti-diarrhoeals
• Pain/bloating - add antispasmodics - dicycloverine - CBT/hypnotherapy, TCAs
What are gallstones made up of?
- 80% mixed - cholesterol, calcium bilirubinate, phosphate, protein
- 10% cholesterol
- 10% calcium bilirubinate - black “pigment” stones
Risk factors for gallstones?
6Fs • Female • Fair • Fat • Forty • Family history • Fertile
(diabetes, contraceptive pill, octreotide)
Presentation of gallstones (cholelithiasis)?
- Severe RUQ or epigastric pain
- Radiation to right scapula
- Precipitated by fatty meal
- Symptoms of acute cholecystitis if it leads to it - RUQ pain, fever
- Symptoms of acute cholangitis if it leads to it - RUQ pain, fever, jaundice
Investigation for gallstones?
- Bloods
• FBC - normal (raised in acute cholecystitis => cholangitis)
• LFT - elevated ALP - blocked duct
• Lipase/amylase - exclude pancreatitis - Abdominal USS - diagnostic (gold standard)
note: AXR - only 10% of gallstones are radio-opaque
Management of gallstones?
Asymptomatic - low-fat diet, observation
Just symptomatic cholelithiasis (in gallbladder) - cholecystectomy
Choledocholithiasis (in bile duct)
- ERCP
- Laparoscopic common bile duct exploration
- Cholecystectomy (laparoscopic) if all symptomatic gallstones removed
Most common type of gastric cancer?
Adenocarcinoma
Signs of gastric cancer?
- Epigastric mass
- Ascites
- Virchow’s Node (Troisier’s sign) - left supraclavicular fossa
- Sister Mary Joseph’s Nodule - metastatic node on umbilicus
- Krukenberg’s Tumour - ovarian metastases
Investigations for gastric cancer?
- Upper GI endoscopy with biopsy
- Endoscopy ultrasound (EUS) - depth of gastric invasion and lymph node involvement
- CT abdo/pelvis - metastases
- CXR
Investigations for GORD?
- PPI trial
- OGD (routine biopsy not recommended if no suggestion of oesophagitis / Barrett’s)
- Barium swallow - detect hiatus hernia, endoscopy contraindicated
- 24hr pH monitor
Management of GORD?
Acute
• Standard dose PPI + lifestyle changes
• Elevated head when sleeping
Ongoing
1. Continued dose PPI
2. High dose PPI -
+ OGD referral (consider H2 antagonists e.g. ranitidine if nocturnal)
3. Surgery - Anti-reflux, Nissen fundoplication
(annual endoscopic surveillance for Barrett’s)
Cause of gastroenteritis/infectious colitis? • D+V outbreaks in institutions • Dysentery (bloody diarrhoea) • Uni student with watery diarrhoea • Elderly on antibiotics • Traveller's diarrhoea
- D+V outbreaks in institutions - norovirus
- Dysentery (bloody diarrhoea) - Shigella/E. coli
- Uni student with watery diarrhoea - C. jejuni
- Elderly on antibiotics - C. difficile
- Traveller’s diarrhoea - E. coli
Difference in time of onset for gastroenteritis caused by toxins, bacteria, virus, protozoa?
Toxins - early (1-24 hours)
Bacterial/viral/protozoal - 12+ hours
Investigation for gastroenteritis?
- Bloods
• FBC - required if starting IV fluids. Anaemia => chronic diarrhoea. High Hb => dehydration. High WCC.
• U&Es - electrolytes, dehydration
• Creatinine - required if starting IV fluids - Stool for culture/toxins (particularly C. difficile toxin causing pseudomembranous colitis)
• AXR/USS/sigmoidoscopy - exclusion (sig. for IBD)