Define melena
Black tarry stools
Usually occurs as a result of upper GI bleeding
Common causes of melena
Peptic ulcer disease
Liver disease
Gastric cancer
Melena investigations
FBC, U&Es, LFTs, clotting + G&S
ABG
OGD - Oesophagogastroduodenoscopy
Treatment of melena due to peptic ulcer disease
Adrenaline injections and cauterisation of bleeding
High dose IV PPI therapy - 40mg omeprazole
Treatment of melena due to oesophageal varicies
Endoscopic banding
Prophylactic antibiotic therapy with somatostatin analogues
Treatment of melena due to upper GI malignancy
Biopsy
Definitive long-term surgical and oncological management