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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...

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Updated: Aug 14, 2025

Endothelialized Microfluidics for Studying Microvascular Interactions in Hematologic Diseases

Endothelialized Microfluidics for Studying Microvascular Interactions in Hematologic Diseases

Published on: June 22, 2012

[Thrombotic microangiopathy].

Tilman Schmidt¹, Tobias B Huber²

¹III. Medizinische Klinik und Poliklinik, Universitätsklinikum Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Deutschland. til.schmidt@uke.de.

Medizinische Klinik, Intensivmedizin Und Notfallmedizin

|January 12, 2023

Summary

This summary is machine-generated.

Thrombotic microangiopathy is a critical diagnosis in patients with anemia and low platelets. Prompt identification and treatment, such as plasma exchange for ADAMTS13 deficiency, are vital for survival.

Keywords:

ADAMTS13 DITMA Disseminated intravascular coagulation Hemolytic-uremic syndrome Thrombotic thrombocytopenic purpura

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Area of Science:

Hematology
Pathophysiology
Emergency Medicine

Context:

Anemia and thrombocytopenia are common in emergency settings.
Thrombotic microangiopathy (TMA) presents a diagnostic challenge.
TMA involves microvascular occlusion leading to organ dysfunction.

Purpose:

To highlight TMA as a crucial differential diagnosis in patients with anemia and thrombocytopenia.
To emphasize the diverse etiologies of TMA, including thrombotic thrombocytopenic purpura and hemolytic uremic syndrome.
To stress the urgency of diagnosis and treatment for TMA.

Summary:

TMA is characterized by Coombs-negative hemolytic anemia, thrombocytopenia, elevated lactate dehydrogenase, and reduced haptoglobin.
Specific causes include ADAMTS13 deficiency (thrombotic thrombocytopenic purpura) and complement-mediated disorders (hemolytic uremic syndrome).
TMA can also manifest secondary to severe hypertension, coagulation disorders, drug toxicity, or metabolic derangements.

Impact:

Early recognition and intervention, such as plasma exchange for TTP, significantly improve patient survival rates.
Understanding the varied causes of TMA guides targeted therapeutic strategies.
Systemic workup is essential for accurate diagnosis and management of TMA in emergency medicine.