Ad
related to: esophageal varices pathogenesis
Search results
Results From The WOW.Com Content Network
Esophageal varices seven days after banding, showing ulceration at the site of banding. The upper two thirds of the esophagus are drained via the esophageal veins, which carry deoxygenated blood from the esophagus to the azygos vein, which in turn drains directly into the superior vena cava.
Patients with portal hypertensive gastropathy may experience bleeding from the stomach, which may uncommonly manifest itself in vomiting blood or melena; however, portal hypertension may cause several other more common sources of upper gastrointestinal bleeding, such as esophageal varices and gastric varices. On endoscopic evaluation of the ...
Portal hypertension is defined as increased portal venous pressure, with a hepatic venous pressure gradient greater than 5 mmHg. [3] [4] Normal portal pressure is 1–4 mmHg; clinically insignificant portal hypertension is present at portal pressures 5–9 mmHg; clinically significant portal hypertension is present at portal pressures greater than 10 mmHg. [5]
Upper gastrointestinal bleeding can be caused by peptic ulcers, gastric erosions, esophageal varices, and rarer causes such as gastric cancer. The initial assessment includes measurement of the blood pressure and heart rate, as well as blood tests to determine the hemoglobin.
Esophageal varices and gastric varices result from collateral circulation in the esophagus and stomach (a process called portacaval anastomosis). [41] When the blood vessels in this circulation become enlarged, they are called varices. Varices are more likely to rupture at this point. [9] Variceal rupture often leads to severe bleeding, which ...
This is used in the treatment of refractory ascites, bleeding from esophageal varices and hepatorenal syndrome. [12] [13] TIPS-related encephalopathy occurs in about 30% of cases, with the risk being higher in those with previous episodes of encephalopathy, higher age, female sex, and liver disease due to causes other than alcohol. [10]
Esophageal inflammation and erosive disease are the next most common causes. [3] In those with liver cirrhosis, 50–60% of bleeding is due to esophageal varices. [3] Approximately half of those with peptic ulcers have an H. pylori infection. [3] Other causes include Mallory-Weiss tears, cancer, and angiodysplasia. [2]
Bleeding from esophageal varices can be a precipitant for hepatorenal syndrome in individuals with cirrhosis, and can be prevented by early diagnosis and treatment. The risk of death in hepatorenal syndrome is very high; consequently, there is a significant emphasis on the identification of patients who are at risk for HRS, and prevention of ...