Tuesday 1 March 2016

Haematemesis

Haematemesis (vomiting blood) can present as either bright red in appearance (a medical emergency, suggesting an acute bleed) or a dark granular so called 'coffee grounds' (suggesting the bleeding is modest or has already ceased).

Causes of Haematemesis:

  • Peptic ulcer disease: most common cause, often epigastric pain a well. Most often due to Helicobacter infection or NSAID use. 
  • Upper GI malignancy: patient will often have fatigue, weight loss, anorexia and early satiety accompanying symptoms. 
  • Varices: formed with portal hypertension when blood is trying to find routes to avoid the liver, most commonly with hepatic cirrhosis.
  • Mallory-Weiss tear: characteristic history of forceful vomiting with haematemesis following (intial vomiting clear of blood). 90% of these will heal spontaneously.
  • Gastritis/Duodenitis: consequence of Alcohol abuse or NSAID overuse. nausea and epigastric pain common.
  • Oesophagitis: consequence of GERD. History of heartburn typically. 
  • Dieulafoy’s lesion: developmental lesion, an unusually large (5-10mm) submucosal artery in the stomach wall. The pulsatility of which causes it to eventually erode through the stomach wall and perforate into the stomach. 
  • Aorto-duodenal fistula: history of recent aortic surgery. 
Management, what to do:

The priority is resuscitation, patients with haematemesis may present in shock. So ABCDEs first. If a patient does present with shock or bright red haematemesis then after they are stabilised they need urgent upper GI endoscopy.
Get urgent CBC, U+E, coag screen, cross match and LFTs 
Varices have a high mortality rate and may be suggested by known chronic liver disease or characteristic signs if liver disease.
If patient has characteristic history of a Mallory-Weiss tear then endoscopy is not needed.
If active bleeding is not suspected and patient is stable, then take a full clinical history and exam. Suspect first gastritis, duodenitis or oesophagitis and pay attention to signs of malignancy.
If the diagnosis is not obvious consider inpatient endoscopy.

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