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Portal Hypertension

Portal Hypertension

Portal hypertension is an increase in blood pressure within the portal venous system. Normally, this pressure is less than 5 mmHg. It is considered clinically significant when it rises above 10 mmHg. At this threshold, complications from altered blood flow and venous congestion emerge.EtiologyPortal hypertension arises from conditions that impede blood flow through the liver. The most common cause is cirrhosis, in which chronic liver injury leads to fibrotic scarring. This fibrosis narrows or...

Venous Thrombosis I: Introduction

Venous Thrombosis I: Introduction

Venous thrombosis, the most common disorder of the veins, involves the formation of a thrombus or blood clot associated with vein inflammation. It can be classified as either superficial vein thrombosis or deep vein thrombosis.Superficial Vein Thrombosis: This involves the formation of a thrombus in a superficial vein, usually the greater or lesser saphenous vein. Though less severe than deep vein thrombosis (DVT), SVT can lead to complications if untreated.Deep Vein Thrombosis (DVT): This...

Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies

Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies

The key difference between Superficial Vein Thrombosis (SVT) and Deep Vein Thrombosis (DVT) lies in their location and severity.Clinical ManifestationsSVT typically presents with localized pain, tenderness, and redness along the course of a superficial vein, often accompanied by a palpable, cord-like structure under the skin. This condition is usually less dangerous than DVT but can be uncomfortable and may lead to complications such as cellulitis or, rarely, a clot extension into the deep...

Venous Thrombosis III: Interprofessional Care

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Venous thrombosis requires effective prevention and treatment strategies to improve patient outcomes and reduce potential complications.Prevention StrategiesHealthcare providers must prioritize preventing venous thromboembolism (VTE) for all adult patients upon admission. Interventions depend on bleeding and thrombosis risk, medical history, current medications, diagnoses, planned procedures, and patient preferences. Patients on bed rest should change positions every two hours and, if not...

Esophageal Varices-I: Introduction

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Esophageal varices are dilated, tortuous veins which are found mainly in the submucosa of the lower esophagus but which may also appear higher up or extend into the stomach. They develop due to increased pressure in the portal venous system, often as a result of liver cirrhosis. This condition scars and damages the liver, impeding normal blood flow through the portal vein. To compensate, blood seeks alternative pathways, forming fragile new vessels (varices) in the esophagus and stomach. These...

Hepatic Portal System

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The hepatic portal system, a critical part of our circulatory framework, transports nutrient-laden, deoxygenated blood from the gastrointestinal tract and spleen to the liver. This ingenious system plays an indispensable role in maintaining our body's metabolic equilibrium.
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New Thrombectomy Technique for Total Portal Vein Thrombosis in Liver Transplantation

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[Portal vein thrombosis].

Susana Seijo-Ríos¹, Juan Carlos García-Pagán

¹Laboratorio de Hemodinámica Hepática, Servicio de Hepatología, Institut de Malalties Digestives I Metaboliques, Hospital Clinic, IDIBAPS, CIBERehd, Barcelona, España.

Gastroenterologia Y Hepatologia

|September 8, 2009

Summary

Splenoportal axis thrombosis, a common cause of portal hypertension, often stems from prothrombotic disorders or local factors. Early anticoagulation therapy improves recanalization and patient prognosis.

Area of Science:

Vascular Medicine
Gastroenterology
Hematology

Context:

Splenoportal axis thrombosis is the second leading cause of portal hypertension in Western countries, excluding cirrhosis or tumors.
Identifying underlying prothrombotic disorders is crucial, as they are implicated in up to 60% of cases.
Local factors also contribute, and multiple etiological factors can coexist.

Purpose:

To emphasize the importance of etiological diagnosis in splenoportal axis thrombosis.
To highlight the impact of early anticoagulation therapy on recanalization and prognosis in acute thrombosis.
To discuss the management of chronic splenoportal thrombosis (portal cavernoma) and current limitations of anticoagulation therapy.

Summary:

Splenoportal axis thrombosis necessitates etiological diagnosis due to diverse causes including systemic prothrombotic disorders and local factors.

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Point-Of-Care Ultrasound Screening for Proximal Lower Extremity Deep Venous Thrombosis

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Early anticoagulation in acute thrombosis significantly enhances recanalization rates and improves patient outcomes.

Chronic cases (portal cavernoma) present with complications of portal hypertension, with anticoagulation currently reserved for patients with identified prothrombotic conditions.

Impact:

Establishes the critical role of timely diagnosis and intervention in managing splenoportal axis thrombosis.
Provides evidence for the benefits of early anticoagulation, potentially altering clinical practice.
Underscores the need for further research into optimal management strategies for chronic portal cavernoma.