GI bleeding Flashcards
What signs should be recognised as potential upper GI bleed
Haematemesis
Coffee ground vomit
Melana
Resus for upper GI bleed management. When transfuse?
NEWS
IV crystalloid
Transfuse if Hb below 70g/L. (aim for 70-100)
What do you use to risk assess an upper GI bleed?
Glasgow Blatchford Score
What should you give if sus varices
Terlipressin 2mg IV
Antibiotics as trust protocol
Continue aspirin
Suspend other antithrombotics
What investgiation should refer to and when with upper GI bleed?
Endoscopy in 24 hours of presentation
GI specialist if require therapeutic endoscopy
When should you activate major haemorrhage protocol and critical care review?
Haemodynamic instability
What landmark sperates upper and lower sources of GI bleeding?
Ligament of Treitz (suspensory ligament of the duodenum, suspends the duodejejunal flexure form the retroperitoneum)
How does bleeding above vs below the ligament of Treitz present?
Above -> haematemesis or melana
Below -> haematachazia (passing blood)
What is melaena?
Dark, black and tarry stool
Strong odour - digestion of haemoglobin
How to differentiate between iron induced black stool and melaena?
Iron will have a green tinge when spread thinner, melaena wont
Common causes of upper GI bleed list
Gastric and/or duodenal ulcers
Severe or erosive gastritis/duodenitis
Severe or erosive esophagitis
Esophagogastric varices
Portal hypertensive gastropathy
Angiodysplasia (also known as vascular ectasia)
Mallory-Weiss syndrome
Mass lesions (polyps/cancers)
No lesion identified (10 to 15 percent of patients)
Symptoms of Mallory Weiss syndrome
- Emesis
- Retching
- Coughing prior to haematemesis
Signs that indicate variceal bleed
jaundice
Ascites
Which peptic ulcer pain is relieved by eating?
Duodenal
Why is duodenal ulcer pain relieved by food?
Presence of food in the stomach triggers release of digestive juices which are alkaline and relieve the acidic pH
If the patient complains of pain when they eat which ulcer is it more likely t be?
Gastric
Symptoms peptic ulcer
Dyspepsia
Central burning chest pain
Signs of malignancy causing upper GI bleed
- Dysphagia
- early satiety
- Cachexia
- Involuntary weight loss
When is haematachezia seen with an upper GI bleed
When the bleed is massive
Why can upper GI bleeds be associated with orthostatic hypotension
When they are big enough to cause haemodynamic instability
History questions ass symptoms with upper GI bleed
painless vs. painful
trouble swallowing
unintentional weight loss
preceding emesis or retching
change in bowel habits
Symptoms of an oesophageal ulcer
Odynophagia, GORD, dysphagia
What is important to consider in a patient with a history of AAA or aortic graft with an upper GI bleed?
Aorto-eneteric fistula - abnormal connection between the aorta and the blood supply to the GI tract
What is angiodysplasia and how diagnosed
an abnormal, tortuous, dilated small blood vessel in the mucosal and submucosal layers of the GI tract.
Diagnosed with colonoscopy or angiography
What PMH is important when considering an angiodysplasia?
Renal disease
Aortic stenosis
Hereditary haemorrhagic telangiectasia
What are risk factors for peptic ulcer diseas?
H.pylori infection
Smoking
NSAID use
Antithrombotic use
What should you especially consider if H.pylori infection, exccess alcohol and smoking are in the history?
Malignancy
Peptic ulcer disease
What could cause upper GI bleed in a patient with gastroenteric anastomosis
Marginal ulcers - ulcers at an anastomic site
What conditions can cause overload in rigorous fluid resus?
CKD, HF
What patients is anaemia especially dangerous in?
IHD
What to assess for in exam for upper GI bleed
Full A to E if acute
Hypovolaemia
Resting tachycardia
Orthostatic hypotnesion
Supine hypotnesion
Signs of liver disease
PR exam
-anal fissures
Haemorrhoids
Anorectal mass
Stool exam
Which bloods ask for in upper GI bleed?
FBC
G+S
INR, PT, APTT
Lactate
LFTs
Renal function - U+Es
Urea may be elevated
CRP
B12/folate/ferritin
Why is urea sometimes eleated in upper GI bleed?
Proteins in blood absorbed in GI tract and transported to kidney - increased waste product
What does a low MCV suggest about the casue of a bleed?
Iron deficiency anaemia, chronic bleeding
Differentials for an upper GI bleed
Peptic ulcer disease
GE varices
Upper GI cancers - oesophageal, gastric
Erosive oesophagitis/gastritis/duodenitis
Mallory Weiss tear
Causes of haemotachezia
Diverticulitis
Colitis: -IBD - Crohns, UC. -Ishcaemic -Infective, C.difficile
Colorectal cancers
Haemorrhoids
Anal fissure