Upper GI Bleed - Symposium
Upper GI Bleed - Symposium
Upper GI Bleed - Symposium
Derivation of these 3 areas from the foregut, midgut, and hindgut, respectively.
From the point of view of GI bleeding, however, the demarcation between the upper and lower GI tract is the duodenojejunal (DJ) junction/ligamentum treitz
Bleeding above the DJ junction is called upper GI bleeding, and that below the DJ junction is called lower GI bleeding.
Consist ofskeletal muscle from the diaphragm and a fibromuscular band of smooth muscle which inserts into the 3rd and 4th part of duodenum and frequently the DJ junction
Contraction widens the angle of the duodenojejunal flexure, allowing movement of the intestinal contents.
Peptic ulcer ( due to NSAIDs, H.Pylori) Gastric erosions ( due to NSAIDs, alcohol) Oesophagitis ( usually with hiatus hernia) Vascular malformations Mallory-Weiss tear Varices (Eg. Liver disease, portal vein thrombosis) Cancer of stomach or esophagus Aorto-duodenal fistula (after an aortic graft)
Causes
Peptic Ulcer
gastric erosion
refers to endoscopically visualized subepithelial hemorrhages and erosions due to NSAID,stress and alcohol. not much bleeding. causes ulceration.
Mallory-Weiss Tear
Due to longitudinal mucosal lacerations (known as Mallory-Weiss tears) at the gastroesophageal junction or gastric cardia. The original description by Mallory and Weiss in 1929 involved patients with persistent retching and vomiting following an alcoholic binge. However, Mallory-Weiss syndrome may occur after any event that provokes a sudden rise in intragastric pressure or gastric prolapse into the esophagus. May also occur in epileptic convulsions.
Varices
Bleeding esophageal varices are enlarged veins in the walls of the lower part of the esophagus. Scarring ( cirrhosis) of the liver is the most common cause of esophageal varices. This scarring reduces blood flowing through the liver. As a result, more blood is shunted to the veins of the esophagus. This extra blood flow causes the veins in the esophagus to balloon outward. If these veins break open, they can bleed severely. Any type of chronic liver disease can cause esophageal varices. Varices can also occur in the upper part of the stomach.
Patients with upper GI hemorrhage often present with: A. hematemesis (vomiting of blood), B. coffee ground vomiting, C. melena (dark tarry stools), D. hematochezia (blood in the feces) if the hemorrhage is severe. E. dyspepsia (especially nocturnal symptoms)
Patients may also present with complications of anemia, including: a. chest pain, b. syncope (loss of consciousness resulting from insufficient blood flow to the brain), c. fatigue d. shortness of breath.
The finding of subcutaneous emphysema with a history of vomiting is suggestive of Boerhaave syndrome (esophageal perforation) The presence of postural hypotension indicates more rapid and severe blood loss.
Investigations in Upper GI Bleeding 1. Urgent endoscopy (<12 h) for all patients requiring ICU admission for GI bleeds) and diagnostic biopsy. 2. Complete blood count useful for comparison of serial values. Initial Haemoglobin concentration maybe normal if taken early, before heamodilution has taken place. 3. Liver function test may show evidence fo chronic liver failure 4. Renal function test urea maybe raised out of proportion to creatinine (indicates severe bleeding) 5. Serial ECGs and cardiac enzymes to exclude myocardial infarction (cmplicates 10% of severe GI bleeds) 6. Nasogastric tube insertion localize bleeding to upper GI tract, quantify ongoing blood loss , clearing blood from stomach to facilitate endoscopy.
1. Plain radiographs of abdomen - free air under the diaphragm is seen in cases of perforated viscous, and this may be accompanied by UGIB. Other etiologies, such as upper GI masses (which usually result in chronic, not acute, UGIB), aneurysms with calcifications, and ascites suggestive of portal hypertension, may be seen on radiographs. 2. Blood alcohol concentration 3. Blood glucose concentration 4. CVP monitoring, blood replacement and bladder catheterisation (for those with severe bleeding) 5. Coagulation screen
Thyroid chemistries, cortisol, and calcium levels are obtained to exclude endocrinologic causes of GI symptoms. Pregnancy testing is considered for young women with unexplained nausea. Serologies tests are available to screen for celiac disease, IBD, and rheumatologic diseases such as lupus or scleroderma. Hormone levels are obtained for suspected endocrine neoplasia. Intraabdominal malignancies produce tumor markers including the carcinoembryonic antigen CA 19-9 and -fetoprotein
Endoscopy The gut is accessible with endoscopy which can provide the diagnosis of the causes of bleeding, pain, nausea and vomiting, weight loss, altered bowel function, and fever. Upper endoscopy evaluates the esophagus, stomach, and duodenum, Upper endoscopy is advocated as the initial structural test performed in patients with suspected ulcer disease, esophagitis, neoplasm, malabsorption, and Barrett's metaplasia because of its ability to directly visualize as well as biopsy the abnormality. In cases of UGIB, this should be carried out after adequate resuscitation, ideally within 24 hours, and will yield a diagnosis in 80% of cases.
MANAGEMENT
Shocked patients should receive prompt volume replacement. It has been demonstrated that early and aggressive resuscitation reduces mortality in UGIB. Correct fluid losses. Either colloid or crystalloid solutions may be used to achieve volume restoration prior to administering blood products; red cell transfusion should be considered after loss of 30% of the circulating volume. Transfuse patients with massive bleeding with blood, platelets and clotting factors in line with local protocols for managing massive bleeding. Platelet transfusions should not be offered to patients who are not actively bleeding and are haemodynamically stable. Platelet transfusions should be offered to patients who are actively bleeding and have a platelet count of less than 50 x 109/litre. Fresh frozen plasma should be used for patients who have either a fibrinogen level of less than 1 g/litre, or a prothrombin time (INR) or activated partial thromboplastin time greater than 1.5 times normal. Prothrombin complex concentrate should be used for patients who are taking warfarin and actively bleeding. Proton pump inhibitors (PPIs) should not be used prior to diagnosis by endoscopy in patients presenting with acute UGIB.
Repeat endoscopy, with treatment as appropriate, should be considered for all patients at high risk of re-bleeding, particularly if there is doubt about adequate haemostasis at the first endoscopy. A repeat endoscopy should be offered to patients who re-bleed with a view to further endoscopic treatment or emergency surgery. Interventional radiology should be used for unstable patients who re-bleed after endoscopic treatment. Percutaneous angiography may be used to localise the bleeding point and embolisation of the artery using foam and coils to stop bleeding. The benefits of embolisation have to be balanced against the risk of causing ischaemic necrosis of the gastrointestinal tract. Refer urgently for surgery if interventional radiology is not immediately available.
Terlipressin should be offered to patients with suspected variceal bleeding at presentation. Treatment should be stopped after definitive haemostasis has been achieved, or after five days, unless there is another indication for its use. Prophylactic antibiotic therapy should be offered at presentation to patients with suspected or confirmed variceal bleeding. Balloon tamponade should be considered as a temporary salvage treatment for uncontrolled variceal haemorrhage. Oesophageal varices:
Band ligation should be used for patients with UGIB from oesophageal varices. there is sufficient evidence to show that stent insertion is effective for selected patients with oesophageal varices in whom other methods of treatment have failed to control bleeding. Transjugular intrahepatic portosystemic shunts (TIPS) should be considered if bleeding from oesophageal varices is not controlled by band ligation.
Gastric varices:
Endoscopic injection of N-butyl-2-cyanoacrylate should be offered to patients with UGIB from gastric varices. TIPS should be offered if bleeding from gastric varices is not controlled by endoscopic injection of N-butyl-2-cyanoacrylate.
Surgical intervention Surgical intervention is required when endoscopic techniques fail or are contra-indicated. Clinical judgement is required and consideration given to local expertise. In general, it is recommended:
To inform surgeons early of the possibility of surgery. To use the most experienced personnel available. To avoid operations in the middle of the night.
The particular procedure required depends on a number of factors, not least the site of bleeding. Gastric ulcers are probably best excised. There are few studies comparing the different techniques.