Gastro Flashcards
what is mesenteric ischaemia
sudden decrease in the blood supply to the bowel
- patient will be acutely unwell
- raised lactate - IMPORTANT AS THIS IS A SIGN OF ISCHAEMIA
- diarrhoea and painful
abdo will be soft
symptoms of small bowel ishaemia
severe abdo pain
shock
nausea
vomiting
metabolic acidosis
what is mcburneys point
point where the appendix lies
draw a line from the anterior superior iliac spine to the umbilicus
it is 1/3 of the way along the line from he ASIL
Metabolic acidosis can be due to?
Diabetic ketoacidosis
What does aspirin overdose present as
High rates of salicylic acid
Causes respiratory alkalosis
then goes onto causing metabolic acidosis
Which test checks for cortisol levels
Synacthen test
Can check for addisonian crisis
Low cortisol levels are found in?
Sepsis
4 symptoms of diabetic ketoacidosis
- Hyperglycaemia
- High anion gap
- Metabolic acidosis
- Abdomen pain
Iron is best absorbed in?
Proximal small bowel
Duodenum
Where does PICC catheter line go
Basilic vein
what are calcified gallstones and why do they form
- pigment stones
- form due to raised bilirubin levels + altered PH levels
what is hepatitis
inflammation of the liver can be due to infections
features of hepatitis
fatigue
nausea and vomiting
diarrhoea
jaundice
what is hepatitis A and presentation
transmitted by fecal-oral route
dark urine
abdo pain
jaundice
which test is best used to investigate hiatal hernia
barium swallow
what is variceal bleeding
arises through portal hypertension
veins get dilated and are more likely to bleed
what is the best prevention method for variceal bleeding
give non-selective beta blockers and edoscopic ligation band
what are carcinoid tumours
rare, slow growing malignant tumours that develop in the neuroendocrine system
what are carcinoid tumours
rare, slow growing malignant tumours that develop in the neuroendocrine system
the tumour releases serotonin
effects of that are: flushing, diarrhea, wheezing, abdominal pain, and heart palpitations
also causes pellagra
management of carcinoid tumours
octreotide
they inhibit the secretion of serotonin by the tumours which cause symptoms like flushing and abdo pain
what is crohns disease
chronic relapsing inflammatory bowel disease
inflammation of the GI tract - mostly the ileum
symptoms of crohns disease
crampy abdo pain and diarrhoea
weight loss and fever
abdo will be swollen and distended and severe guarding
symptoms of diverticulitis
left lower quadrant abdomen pain and nausea
pain, fever, nausea, vomiting, constipation or diarrhea, and a change in bowel habits
common in low fibre diets
what is diverticulitis
inflammation and out pouching of the mucosa in the sigmoid colon
these pouches get infected and inflammed
what is achalasia
failure of the oesophageal sphincter to relax
makes it hard for food to go to the stomach
symptoms of achalasia
regurgitation of food
aspiration
retrosternal pain
treatment for achalasia
hellers cardiomyotomy
best investigation for mesenteric ischaemia
CT abdo
what can this patient be at risk for?
he has had a change in bowel habit,
losing weight
more frequency when passing stool
colorectal cancer
what is achalasia
failure of the oesophageal peristalsis and relaxation of the Lower oesophageal spincter
features of achalasia
dysphagia
heart burn
regurgitation of food
investigation for achalasia
barium swallow test
oesophageal cancer features
dysphagia
anorexia
weight loss
vomiting
hoarseness
two types of oesophageal cancer
adenocarcinoma
squamous cell carcinoma
adenocarcinoma - oesopagheal cancer
most cmmm in UK
risk factor : GORD
smoking
squamous cell carcinoma of oesophageal cancer
most common in the developing world
smoking
aclohol
investigation of oesophageal cancer
upper GI endoscopy
CT chest, abdo and pelvis
management of oesophageal cancer
surgical resection
Ivor-Lewis oesophagectomy
coeliac disease what is it
autoimmune condition where gluten causes a reaction
presentation of coeliac disease
failure to thrive
diarrhoea
fatigue
weight loss
nausea and vomiting
dermatitis herpertiformis - pink rash on children
anaemia
what is the investigation of coeliac disease
check for TTG antibodies
IgA antibodies - deficiency of can cause a false negative result
- patient has to be on gluten diet in order to carry out the tests
always check diabetic patients
what are uncomplicated peptic ulcers
ulceration of the stomach mucosa
risk factors of uncomplicated peptic ulcers
h pylori
drugs - NSAIDS
increased acid
factos that increase acid secretion in stomach
alcohol
caffeine
spicy food
smoking
stress
presentation of uncomplicated peptic ulcers
epigastric pain
nausea and vomiting
dyspepsia - indigestion
features of duodenal ulcers
pain when hungry
pain goes away when eating
features of gastric ulcer
painful after eating
investigation for uncomplicated peptic ulcers
test for h pylori - stool test
management of uncomplicated peptic ulcers
if there is no H pylori - then give PPI
if there is H pylori - eradication therapy
eradication therapy for uncomplicated peptic ulcers
PPI and amoxicillin and clarithromycin
give methroniazaole instead of amoxicillin if patient is allergic to penicillin
what are LFT markers
serum markers of liver cell damage
help localise site of damage
hepatic picture - LFT markers in this?
raised ALT and AST
cholestatic picture - LFT markers in this?
raised ALP and GGT
what is ALT
enzyme found in the hepatocytes that is involved in amino acid and group transfer
damage to heptaoctes causes raised ALT
where is ALT found
liver
heart
pancreas
kidneys
hepatic causes of raised ALT
hepatitis
liver ishaemia
paracetamol OD
extrahepatic causes of raised ALT
MI
pancreatitis
kidney disease
what is AST
enzyme involved in amino acid and group transfer
raised when hepatocytes are damaged
if AST:ALT RATIO IS AST>ALT then what is the cause?
alcohol is the cause
what is ALP
elevated obstructive jaundice and bile duct damage
what is the biliary cause of raised ALP
gallstones - causes jaundice
pancreatic cancer - painful
extra biliary causes of raised ALP
pagets disease
low vitamin D
what is GGT - when is it raised
liver enzyme and is raised In chronic alcohol use and gallstone diseases
what are gallstones
blockage of of the bile duct which causes stones
4 Fs for gallstones
Fat
Fertility
Female
Forty
common complications of gallstones
biliary colic - the stones are outside the bile duct
cholecystitis
cholangitis
biliary colic - what is it
when a gallstone blocks the bile duct
colicky abdo pain
worse after fatty meals
lasts 15mins to 5 hours
acute cholecystitis
inflammation of the gall bladder
right upper quadrant pain
fever and murpheys sign
complications of cholecystectomy
bleeding
infection
pain
stones left in the bile duct
what is acute cholangitis
patient will be unwell with a fever
jaundice
right upper quadrant pain
management of acute cholangitis
iv antibiotics
analgesia
what is acute pancreatitis
rapid inflammation of the pancreas
presentation of acute pancreatitis
severe epigastric pain
radiates to the back
vomitng
abdo tenderness
charchots triad - what is it:
bilary colic - RUQ pain
cholecystis - RUQ pain and Fever
Cholangitis - RUQ pain and fever and jaundice
causes of acute pancreatitis
acronym (I GET SMASHED)
IDIOPATHIC
GALLSTONES
ETHANOL (ALCOHOL)
TRAUMA
STEROIDS
MUMPS
AUTOIMMUNE
SCORPION STING
HYPERLIPIDEAMA
ERCP
DRUGS
investigation for acute pancreatitis
amylase
lipase
CRP
gallstones
FBC and LFTs
why does fatty cause pain in biliary colic
CCK is released from the duodenum when fatty foods are eaten
this contracts the gall bladder
if there is stones there then it will hurt
management of acute pancreatitis
Iv fluids
analgesia
treatment of the gallstones
antibiotics
complications of acute pancreatitis
necrosis
fluid collection
pancreatitis
what is small bowel obstruction
blockage in passing stool fluid and gas in the bowel
which bowel obstruction is more common
small
presentation of small bowel obstruction
central abdo pain
nausea and vomiting
constipation and no flautence
abdo distention
TINKLING BOWEL SOUNDS
causes of small bowel obstruction
hernia
adhesions
malignancy
x ray findings of small bowel obstruction
dilated small bowel
investigations for small bowel obstruction
CT and erect chest x ray
what is C difficile
gram positive rod
causes of C difficile
clindamycin
PPIs
co-amox
management of small bowel obstruction
iv fluids
emergency managemt
surgery
NG tube
features of C difficile
diarrhoea
abdo pain
raised WCC
diagnosis of C difficile
test for the bacteria in stool
management of C difficile
1st line oral vancomycin (if its the first episode)
life threatening - oral vancomycin and iv metronidazole
crohns disease - what is it
can be anywhere in the GI tract
more common in terminal ileum
cobble stone appearance
increased goblet cells
colorectal cancer
sporadic - runs in family
unexplained weight loss
rectal bleeding
addo pain
change on bowle habits
iron deficiency anaemia
what is HNPCC
Lynch syndrome
autosomal dominant
proximal colon
what is the Amsterdam criteria
3 family members had some similar cancer
what is FAP
autosomal dominant
2 types - clasic and attenuated
polyps that form
due to mutations APC
features of crohns disease
weight loss
diarrhoea
RUQ pain
perianal disease
investigations for crohns disease
bloods
colonoscopy
history
small bowel enema
management of crohns disease
stop smoking
what is ulcerative colitis
rectum to ileocecal valve
bloody diarrhoea
urgency and tenesmus
abdo pain LLQ
arthritis
investigation of ulcerative colitis
barium meal