about the project
Medical news
For authors
Licensed books on medicine
<< Previous Next >>

Portal hypertension

Portal hypertension is usually found in patients with cirrhosis of the liver and is clinically manifested by ascites, bleeding from the dilated veins of the esophagus and stomach, and portosystemic encephalopathy. The pressure in the portal system can be expressed by the following equation DP = Q x R, from which it follows that the blood pressure in the portal system is equal to the product of the blood flow volume by the resistance. Therefore, an increase in both blood flow volume (Q) and resistance (R) leads to an increase in pressure in the system. If an increase in od

Fig. 9-4.

Esophageal varicose veins

(2-3 degree increase) with multiple red marks
<< Previous Next >>
= Skip to textbook content =

Portal hypertension

    characterized by a persistent increase in blood pressure in the portal vein and is manifested by the expansion of portocaval anastomoses, ascites and an enlargement of the spleen. Portal hypertension occurs as a result of: 1) impaired blood outflow from the portal vein as a result of compression from the outside by the tumor, enlarged lymph nodes of the liver gate with cancer avenges, etc. ; 2) obliteration of part of it inside
  2. Portal Hypertension Syndrome
    Portal hypertension syndrome is a symptom complex caused by circulatory disorders in the portal vein system. Leading symptoms: • splenomegaly; • expansion of the veins of the esophagus and anterior abdominal wall; • ascites. Etiology. The causes of portal hypertension are blood circulation blocks in the portal system. Suprahepatic block - thrombosis of the hepatic veins, inferior vena cava; stenosis and obliteration
  3. Pathophysiological mechanisms of portal hypertension syndrome
    Under the syndrome of portal hypertension is understood a complex of disorders that develop as a result of impaired blood flow in the portal vessels, the hepatic veins or the inferior vena cava and the subsequent increase in pressure in the portal vein system. Depending on the location of the obstruction to the blood flow, intra- and extrahepatic forms of portal hypertension are distinguished. Intrahepatic form develops with cirrhosis
  4. The most important complications of portal hypertension and liver (hepatocellular) failure
    Portal hypertension (see chapter 3). With portal hypertension, blood pressure in the portal vein can increase significantly. The causes of portal hypertension may be obstacles for the passage of blood through the liver (with cirrhosis) from the portal vein system to the system of the inferior vena cava, as well as obstruction (thrombosis, compression) of the portal vein trunk. Portal hypertension syndrome is characterized by three
  5. The principles of treatment of bleeding from the gastrointestinal tract with portal hypertension
    Bleeding from varicose nodes is the most abundant of all types of bleeding that occurs in the upper parts of the gastrointestinal tract, in which the patient requires emergency medical care. In more than 90% of cases of such bleeding, the hematocrit level drops sharply and becomes less than 30% of normal, resulting in the need for
  6. Disease history. Cirrhosis of the liver of alcoholic etiology. Moderately active. In the stage of decompensation. Class C By Child Pugh. Portal hypertension syndrome, ascites. Jaundice. Hepatic cell failure, 2011
    Russian State Medical University named after N.I. Pirogova. 3 course. 2 semester. Medical history delivered to
  7. Features of portal blood circulation and blood supply to the liver
    Maintaining normal portal circulation is crucial not only for the blood supply to the abdominal organs, but also for central hemodynamics. The throughput of the portal vascular bed is on average 1.5 l / min, portal blood flow reaches 25-33% of the IOC. The features of the portal section of the vascular system is that the flow of blood to it is carried out
  8. Hypertension
    In the broad sense of the word, the term "hypertension" means an increase in hydrostatic pressure in the vessels, hollow organs, or body cavities. However, in this section we will focus only on vascular disease, the main clinical sign of which is a steady increase in blood pressure - arterial hypertension. The main target for this pathology are arteries
    Definition Hypertension is an increase in blood pressure by more than 20% above the usual or absolute value of blood pressure to a level that exceeds the limit for a given age. Etiology Prior hypertension: essential hypertension; Renovascular hypertension preeclampsia; autonomic dysreflexia. Catecholamine release:
  10. Arterial hypertension
    Arterial hypertension is an increase in blood pressure from the mouth of the aorta to arterioles, inclusive. Classifications of atherial hypertension: primary arterial hypertension and secondary arterial hypertension. Etiology, pathogenesis. Etiopathogenesis of arterial hypertension. 1. Etiological factors: psychoemotional effects, hypoxia of the brain, age-related neuroendocrine restructuring,
  11. Arterial hypertension
    General information Hypertension is the leading cause of mortality and disability in most Western countries, as well as the most common (25%) concomitant disease in surgical patients. Persistent untreated arterial hypertension accelerates the development of atherosclerosis and causes damage to target organs. It is considered one of the main risk factors for
Medical portal "MedguideBook" © 2014-2019