Esophageal Varices

What are Esophageal varices?

Esophageal varices are abnormally dilated submucosal veins in the distal esophagus. These vessels form when portal hypertension (increased pressure in the portal venous system) exceeds the capacity of the local venous architecture. Approximately half of all individuals with cirrhosis develop these collaterals, which become nearly universal once liver disease progresses to decompensation.

Recognizing esophageal varices is important because high-risk varices can be treated to reduce the risk of first bleeding or rebleeding. Large vessels carry a higher risk of developing into bleeding esophageal varices, and variceal hemorrhage remains a primary cause of morbidity and mortality in cirrhotic cases. Understanding the hemodynamic forces behind their formation allows clinicians to implement preventive measures before a catastrophic rupture occurs.

What causes Esophageal varices?

The main player in esophageal varices causes is portal hypertension. Portal hypertension is defined by a hepatic venous pressure gradient (HVPG) of at least 6 mm Hg, with clinically significant portal hypertension and the development of varices beginning at 10 mm Hg. Cirrhosis, from alcohol use, viral hepatitis, or metabolic dysfunction, increases resistance to blood flow through the liver. This resistance forces blood into the low-pressure distal esophageal plexus, causing the veins to distend.

Non-cirrhotic esophageal varices causes include portal vein thrombosis, hepatosplenic schistosomiasis, and congenital hepatic fibrosis. Regardless of the trigger, the heightened pressure gradient stretches the variceal wall and thins the overlying mucosa. This thinning increases the likelihood of an esophageal varices rupture during sudden spikes in intra-abdominal pressure. Advanced liver disease may also contribute to coagulopathy and thrombocytopenia.

What are the signs and symptoms of Esophageal varices?

Esophageal varices are usually asymptomatic until they bleed. Thus, the earliest esophageal varices symptoms often manifest as general signs of liver dysfunction, such as splenomegaly (enlarged spleen) or ascites (abdominal fluid). Occult chronic blood loss from esophageal varices is uncommon. Thrombocytopenia, when present, usually reflects hypersplenism from portal hypertension rather than the varices themselves.

When a rupture occurs, acute symptoms include hematemesis (vomiting blood), melena (dark, tarry stools), and rapid-onset lightheadedness. Massive hemorrhage from bleeding esophageal varices leads to systemic instability, including tachycardia, hypotension, and altered mental status. Clinicians should also look for physical signs of chronic liver disease, such as jaundice, palmar erythema, and caput medusae, which indicate a high risk of variceal development.

How are Esophageal varices diagnosed?

Upper endoscopy (esophagogastroduodenoscopy) serves as the diagnostic gold standard. This procedure allows direct visualization of variceal size and high-risk stigmata, such as red wale markings, which are associated with an increased risk of bleeding. Patients with cirrhosis should be assessed for screening based on current risk stratification. Upper endoscopy is indicated for decompensated cirrhosis and for compensated cirrhosis with noninvasive evidence of clinically significant portal hypertension.

Noninvasive tools, especially liver stiffness measurement and platelet count, can help identify compensated cirrhosis patients at low risk for high-risk varices who may safely defer screening endoscopy. Measurement of the hepatic venous pressure gradient (HVPG) can confirm clinically significant portal hypertension, but it is invasive and is not routinely performed in most patients. A gradient above 12 mm Hg specifically identifies those at the highest risk for acute bleeding.

How are Esophageal varices treated?

The emergency management of bleeding esophageal varices prioritizes airway protection and rapid volume resuscitation. Vasoactive agents, such as octreotide or terlipressin, are administered to reduce splanchnic blood flow and portal pressure. While some clinicians consider esophageal varices txa (tranexamic acid), its use remains reserved for refractory cases due to limited evidence in variceal hemorrhage.

Urgent esophageal varices banding (endoscopic ligation) is the preferred endoscopic therapy for acute esophageal variceal bleeding. Following stabilization, the esophageal varices treatment plan involves repeated banding sessions every one to two weeks until the vessels are obliterated. Long-term beta blocker esophageal varices prophylaxis, using nonselective agents like propranolol or carvedilol, reduces the risk of rebleeding. If endoscopic and medical therapies fail, a transjugular intrahepatic portosystemic shunt (TIPS) provides portal decompression.

What are the most important facts to know about Esophageal varices?

• Esophageal varices are high-pressure submucosal veins that develop as collateral circulation due to chronic portal hypertension.
• Cirrhosis is the leading cause, though non-cirrhotic esophageal varices causes, such as portal vein thrombosis, should be considered in younger cases.
• Because esophageal varices symptoms are often absent until a rupture occurs, patients with cirrhosis should undergo risk-based screening for varices using current noninvasive criteria and upper endoscopy when indicated.
• Acute bleeding esophageal varices require urgent resuscitation, vasoactive infusions, and prophylactic antibiotics to improve survival.
• Chronic management relies on esophageal varices banding (ligation) and nonselective beta-blocker therapy to maintain a low portal pressure gradient.