GI Flashcards
What is a hernia
Protrusion of viscus through a defect in the wall
Comps of hernias
Irreducitlbe
obstruction
incarcerated
strangulated
RFs for inguinal hernia
obesity, constipation, chronic cough, male, heavy lifting
Types of inguinal hernia?
Where through?
Which is most likely to strangulate?
Indirect - through deep inguinal ring (most likely to strangulate)
Direct - through post wall of inguinal canal
Ix if unsure about hernia
USS
Usual pres of hernia
Lump +/- pain (if incarcerated)
Mx of small hernia
W+W
wt loss
Pres of femoral hernia?
Where?
Lump in groin
Inf + lat to pubic tubercle
DDx of femoral hernia in men?
How to differentiate?
Hydrocele - can get above this on examination
Cant get above hernia
Comp of femoral hernias?
high strangulation rate
Pres of strangulated hernia?
red, tender, tense, irreducible +/- colicky abdo pain + vomit + distension –> = obstruction (EMERGENCY)
Red flags of dyspepsia?
ALARMS Anaemia Lost weight Anorexia Recent onset (in >55yo) Melaena Swallowing difficulty
Causes of dyspepsia?
Functional
PUD
Oesophagitis
Dx of functional dyspepsia?
Rome Criteria
6m post-pranidal fullness
Early satiety
Epigastrci pain/burn
No structural abnorm
Drugs causing dyspepsia?
Nitrates
bisphosphonates
corticosteroids
NSAIDs
Mechanism of PPIs?
Decrease expression of H+/K+ antiporter on luminal memb of parietal cells
decreased stomach acid
Ix in dyspepsia?
FBC
H. pylori [urea breath test, stool antigen]
+/- endoscopy
barium
Lifestyle for dyspepsia
stop drugs stop smoking avoid aggravating foods weight loss antacids [gaviscon]
Stomach cells + function?
chief cells - pepsinogen G-cells - gastrin parietal cells - IF, HCl D-cells - somatostatin Goblet cells - mucus, bicarb
What stops acid prod?
somatostatin
what is h pylori?
gram -ve
curved bacillus
sx of PUD?
fullness
bloating
early satiety
epigastric pain/burn
Anaemia in PUD?
iron deficiency (bleeding ; h pylori uses Fe for growth)
mx of h pylori
Triple therapy
PPI + amox + clarithromycin/metronidazole
pain in DU vs GU
DU - post prandial (1-3h) relieved by eating
GU - on eating
Zollinger-Ellison syndrome?
gastrin-secreting tumour –> overprod of acid so recurrent peptic ulcers
mx of PUD?
PPI / H2RA
GORD?
reflux of acidic contents into oesophagus
What does GORD cause?
oesophagitis, ulceration, stricture, Barrett’s
Epithelial change in Barretts?
metaplasia
squamous –> glandular
RFs for GORD
pregnancy obesity smoking alcohol fatty foods
pres of GORD?
Heartburn - related to meals, posture Water brash - excess salivation Acid brash - retrostern discomfort, regurg Odynophagia Belching
Ix in GORD
Gold standard = endoscopy
FBC
Barium swallow
Red flag sx in dyspepsia
ALARMS Anaemia Lost weight Anorexia Recent onset (in >55yo) Malaena Swallowing difficulty
Drugs affecting oesophageal motility?
nitrates
anticholinergics
TCA
Drugs that damage gastric mucosa?
NSAID
bisphosphonates
Mx of oesophagitis?
PPI 2m
Surgical mx of GORD
Laparoscopic fundoplication
Pres of hiatus hernia
GORD
due to incompetent LOS
ix for hiatus hernia
CXR
barium study
endoscopy
mx of hiatus hernia
lifestyle
PPI
surgery (gastropexy)
ix for Barrett’s?
endoscopy
biopsy
mx of barretts?
Low grade?
High grade?
Low -lifestyle, PPI +/- ablation
High - oesophagectomy
Type of ca in oesophagus?
SCC (upper 2/3)
Adenocarinoma (lower 1/3)
Pres of oesophageal Ca?
Dysphagia (solids>liquids) Vomiting Anorexia Wt loss Hiccups + retrosternal pain hoarseness + cough
ix in oesophageal Ca?
FBC, U+E, LFT, CRP
Endoscopy + biopsy
CT/MRI
Barium swallow
DDx of dysphagia?
Oesophageal [GORD, oesophagitis, oesophageal Ca]
Neuro [CVA, achalasia, MS, MND]
Other [pharyngeal pouch, compression, scleroderma]
Achalasia?
Disorder of motility of LOS
Ix in achalasia? What would you see?
CXR - dilated oesophagus behind heart
Barium swallow - bird’s beak
Manometry
Mx of achalasia?
CCB/nitrates
+/- surgery
GI features of scleroderma?
reflux oesophagitis, delayed gastric emptying, watermelon stomach
Autoantibodies in scleroderma?
anti-topoisomerase 1
anti-centromere
anti-RNA polymerase 3
Mx of scleroderma GI?
lifestyle
PPI
Pro-motility [metoclopramide, domperidone]
Dilatation of oesophageal strictures
DDx of upper GI bleed?
PUD, mallory weiss, malignancy, varices
Haematemesis?
Red vs coffee ground?
Red = fresh, above stomach, active haemorrhage
Coffee ground = stomach/below
Cause of mallory weiss?
persistent vomiting/wretching
ix of mallory weiss?
endoscopy, FBC, U+Es
comps of mallory weiss?
aspiration pneumonia
mediastinitis
hypovolaemic shock
oesophageal varices?
dilated veins at junction between portal and systemic circulation
cause of varices?
chronic liver disease –> portal HTN
ix in varices?
endoscopy, FBC (Hb + haematocrit), clotting, U+Es, LFTs
ix in upper GI bleed?
Endoscopy (within 24h - post resus)
FBC, coag, LFTs, U+Es
crossmatch
CXR
Mx of upper GI bleed?
fluid resus + high flow O2
2 wide bore cannula + send bloods
(FBC/UE/LFT/crossmatch/coag)
Transfuse with blood/platelets according to major haemorrhae protocol
Mx of UGI bleed?
Mechanical clips
Thermal coagulation with adrenaline
FIbrin/thrombin with adrenaline
Mx of oesophogeal variceal bleed?
Band ligation
Endoscopic injection of N-butyl-2-cyanoacrylate
Pres of bowel obstruction
N+V
pain
failure to pass bowel movements
distension
Bowel sounds in obstruction?
High pitched
Silent bowel sounds?
ileus
ix in obstruction?
FBC, U+Es, group, crossmatch
fluid charts
AXR - supine + erect
AXR in obstruction?
Distended loops of bowel proximal to obstruction
AXR in paralytic ileus?
fluid levels + distended small bowel throughout
AXR in perforation?
gas under the diaphragm
mx of uncomplicated obstruction?
fluid resus
correct electrolytes
intestinal decompression (NG tube)
If no diagnosis in obstruction, what do you do?
laparotomy
consent for stoma
Cause of sigmoid volvulus?
chronic constipation
complication of sigmoid volvulus?
venous infarction –> perforation, faecal peritonits
AXR of sigmoid volvulus?
What other ix do you do?
Coffee bean sign
CT - assess bowel wall ischaemia
Mx of sigmoid volvulus?
Urgent admission + decompression (sigmoidoscope + flatus tube)
If recurrent - resect sigmoid colon
Paralytic ileus?
who does it occur in?
no peristalsis
elderly with lots of co-morbs
mx of paralytic ileus?
resus, bowel decompression (NG tube)
Pres of pseudo obstruction?
absence of mechanical obstruction
abdo pain, bloating, N+V, obstipation, massive distension
AXR of pseudo-obsruction?
Megacolon
Mx of pseudo-obstruction?
treat cause IV fluids Endoscopic decompression (NG tube) Metoclopramide (prokinetic + antiemetic) IV neostigmine
Hirschprungs?
Abscence of PSNS ganglion cells in myenteric + submucosal plexus of rectum
Pres of Hirschprungs?
failure to pass meconium within 48h
abdo distension
ix in hirschprungs?
Rectal biopsy
AXR - dilated lower bowel
anal manometry in older children
pres of intra abdo abscess?
fever + pain
swinging pyrexia
palpable mass
pres of peritonitis?
pain anorexia N+V high fever tachycardia rebound tenderness guarding
ix in peritonitis?
FBC, U+E, LFT, amylase, lipase, blood cultures
peritoneal fluid [culture+amylase]
AXR, CXR (air under the diaphragm)
mx of abdo abscess?
metronidazole + 3rd gen ceph + surgical drainage
mx of peritonitis?
IV fluids
IV abx [metronidazole + cefotaxime]
surgery
what is Rovsings sign
palpation of LLQ increases pain in RLQ –> appendicitis
ddx appendicitis
GI obstruction constipation perforation diverticulitis crohs testicular torsion ectopic DKA
ix in appendicitis
UTI, pregnancy test, FBC, CRP, USS
mx appendicitis
appendicectomy
IV fluids
analgesia
IV metronidazole + cefotaxime
what is deverticulum?
herniation of mucosa through think colonic muscle
mx of diverticulitis
coamoxiclav
+/- surgery
mx ischaemic bowel
Resus - O2, IV fluids
Papaverine relieves spasm
Heparin if thrombosis
surgery
pres of chronic mesenteric ischaemia?
AKA intestinal angina
wt loss, postprandial pain, fear of eating
RFs for chronic mesenteric ischaemia
smoking, HTN, DM, hyperlipidaemia
ix for chronic mesenteric ischaemia
angiography
FBC, LFT, U+Es
mx of chronic mesenteric ischaemia
nitrates
anticoag
bypass surgery
causes of malabsorption
coeliac
Crohns
CF
ix of malabsorption
FBC, LFT, ESR, CRP iron studies folate b12 clotting auto-antibodies (tTG) faecal elactase ileocolonoscopy + biopsy
genetics in coeliac
HLA-DQ2
histology coeliac
villous atrophy
crypt hyperplasia
pres of coeliac
IBS chronic fatigue diarrhoea wt loss anaemia
skin features of coeliac
dermatitis herpetiformis
antibodies in coeliac
tTG IgA
EMA IgA
mx of coeliac
lifelong gluten free diet
Ca/vit D supplements
Annual r/v
similar disease to coeliac? whats the difference on biopsy?
tropical sprue (incomplete villous atrophy)
mx of tropical sprue
fluid replacement
tetracycline 6-12m
Node indicates gastric ca
virchow’s node
ix in gastric cancer?
FBC, LFT, flexible endoscopy/gastroscopy + biopsy
CT abdo for mets
mx of gastro Ca
surgery
chemo
nutrional support
MALT lymphoma?
mucos-assosciate lymphoid tissue
Subtype of NHL
assosciations with MALT tumours?
H.pylori
C.jejuni
mx of MALT
eradicate H. pylori –> can cause remission in early disease
mx of advanced MALT?
eradicate H pylori
rituximab
chemo
surgery
ix in carcinoid tumour?
plasma chromogranin A
24h urinary 5-HIAA
endoscopy
CT/MRI
medical mx of carcinoid tumour
octreotide
radio/chemo
genetic causes of colorectal ca
FAP
HNPCC
ix in colorectal ca
PR + colonoscopy + biopsy
FBC, LFT, CEA, FOB, CT
screening for colorectal ca
60-75
2 yearly FOB; if +ve then colonoscopy
Dx of IBS
6m history of ABC (abdo pain, bloating, changed habit)
relieved by defecation
Ix of IBS
r/o DDx
FBC, ESR, CRP coeliac screen Ca-125 faecal calprotectin FOB
mx of IBS
lifestyle, diet, destress
diarrhoea - loperamide
bloating - peppermint oil
constipation - ispaghula
abdo pain - buscopan
UC vs Crohns?
UC [continuous disease, ulcers, polyps, confined to mucosa and submucosa]
Crohns [rectal sparing, skip lesions, mucus cobblestone, transmural granulomatous inflam]
Non- GI manifestations of Crohns?
erythema nodosum pyoderma gangrenosum arthritis iritis conjunctivitis
pres of Crohns?
Diarrhoea (>6w) +/- blood
abdo pain
wt loss
ix in Crohns
FBC, U+Es, LFT, ESR/CRP
faecal calprotectin
stool MC+S
ileocolonoscopy + biopsy
mx of Crohns?
induce remission –> oral pred
maintain remission –> azathioprine
smoking cessation
UC ix?
FBC, U+Es, LFT, ESR/CRP faecal calprotectin stool MC+S sigmoidoscopy + biopsy p-ANCA
mx of UC?
induce remission –> mesalazine +/- pred
maintain remission –> oral mesalazine
mx of severe exacerbation of UC?
admit + IV hydrocortisone + IV fluids
+/- IV ciclosporin
types of laxative?
bulk forming - ispaghula
softener - arachis oil
stimulant - senna, docusate
osmotic - lactulose
Which toxin –> HUS
shiga
Xray signs of small bowel obstrucion
central
multiple bowel loops
ladders
xray signs of large bowel obstruction
1 big loop
peripheral
haustrations
Boars sign?
pain under R scapula in cholectystitis
ix in acute pancreatitis?
serum lipase
ix in chronic pancreatitis?
urine amylase