Related Experiment Video
Updated: Aug 16, 2026

06:51
A Patient-Derived Xenograft Model for Venous Malformation
Published on: June 15, 2020
Embolic abscesses in hereditary hemorrhagic telangiectasia
1Department of Dermatology, University of Minnesota Hospitals, Minneapolis.
Journal of the American Academy of Dermatology
|April 1, 1991
Summary
Hereditary hemorrhagic telangiectasia (HHT) patients are at risk for embolic abscesses causing neurologic symptoms. Prophylactic antibiotics, similar to endocarditis protocols, are recommended for HHT patients undergoing procedures that may cause bacteremia.
Area of Science:
- Neurology
- Infectious Diseases
- Genetics
Background:
- Hereditary hemorrhagic telangiectasia (HHT) is an inherited vascular disorder.
- HHT is characterized by mucocutaneous telangiectases and visceral arteriovenous malformations.
- Patients with HHT face risks of serious clinical complications.
Observation:
- Two cases of HHT patients presenting with neurologic symptoms due to embolic abscesses are reported.
- One patient experienced a fatal outcome from this complication.
- The observed complication shares similarities with endocarditis in valvular heart disease patients.
Findings:
- Embolic abscesses can lead to severe neurologic complications in HHT patients.
- The incidence and microbiology of these abscesses resemble those seen in infective endocarditis.
- Prompt recognition and management of embolic events are crucial.
Implications:
- Patients with HHT may require enhanced vigilance for infectious complications.
- Consideration should be given to antibacterial prophylaxis for HHT patients.
- Prophylactic strategies should mirror those used for patients with valvular heart disease at risk for bacteremia.
More Related Videos
Related Concept Videos
Anticoagulant Drugs: Low-Molecular-Weight Heparins
Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
Disorders of Hemostasis
Hemostasis, the process that stops bleeding after a blood vessel injury, is crucial for maintaining the integrity of the circulatory system. However, disorders of hemostasis can disrupt this delicate balance, leading to either excessive clotting or bleeding. These disorders can be broadly classified into thromboembolic disorders and bleeding disorders.
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
Esophageal Varices-I: Introduction
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...
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...
Hemorrhagic Stroke l: Introduction
A hemorrhagic stroke is an acute neurological event that occurs when a weakened cerebral blood vessel ruptures, allowing blood to accumulate within or around the brain. The sudden release of blood forms a focal hematoma that increases intracranial pressure, displaces neural tissue, and can obstruct cerebrospinal fluid pathways. These effects may be compounded by intraventricular extension of the hemorrhage, cerebral edema, or compression of adjacent structures, all of which contribute to...
Hemorrhagic Stroke ll: Pathophysiology
A hemorrhagic stroke develops when a cerebral blood vessel ruptures, allowing blood to escape into the surrounding brain tissue, as in intracerebral hemorrhage (ICH), or into the subarachnoid space, as in subarachnoid hemorrhage (SAH). Because the skull is a rigid compartment, the sudden presence of extravascular blood rapidly increases intracranial pressure and compresses adjacent neural structures, leading to immediate tissue injury and impaired cerebral perfusion.Mass Effect and Primary...

