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Related Concept Videos

Traumatic Brain Injury l: Introduction01:28

Traumatic Brain Injury l: Introduction

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DefinitionTraumatic brain injury, or TBI, is a disturbance of normal brain function induced by an external mechanical force, such as a direct blow to the head or a penetrating injury. It can affect both brain structure and function, producing a wide range of clinical outcomes. TBI is a heterogeneous condition, meaning its effects may differ based on the type, location, and severity of the injury.Basis of ClassificationTBI is classified based on severity, injury mechanism, or pathophysiology. In...
14
Hemorrhagic Stroke ll: Pathophysiology01:29

Hemorrhagic Stroke ll: Pathophysiology

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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...
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Venous Thrombosis I: Introduction01:30

Venous Thrombosis I: Introduction

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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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Venous Thrombosis III: Interprofessional Care01:29

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...
482
Hemorrhagic Stroke l: Introduction01:17

Hemorrhagic Stroke l: Introduction

15
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...
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Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies01:20

Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies

466
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...
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Author Spotlight: Deciphering Coagulation Disorders in Traumatic Brain Injury Patients
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Thromboelastography defines late hypercoagulability after TBI: a pilot study.

Allie M Massaro1, Sean Doerfler, Kelsey Nawalinski

  • 1Department of Neurology, Perelman School of Medicine and the Hospital of the University of Pennsylvania, 3 West Gates Building, 3400 Spruce Street, Philadelphia, PA, 19104, USA, allie.massaro@gmail.com.

Neurocritical Care
|August 17, 2014
PubMed
Summary
This summary is machine-generated.

Traumatic brain injury (TBI) is linked to a delayed hypercoagulable state, indicated by rising thromboelastography (TEG) markers like maximal amplitude (MA) and thrombus generation (TG) days after injury. This suggests increased platelet activity post-TBI.

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Area of Science:

  • Neurology
  • Hematology
  • Trauma Surgery

Background:

  • Traumatic brain injury (TBI) is known to induce a hypercoagulable state, but its underlying mechanisms and duration are not fully understood.
  • Thromboelastography (TEG) is a viscoelastic hemostatic assay used to assess coagulation function.

Purpose of the Study:

  • To investigate the utility of TEG in identifying and characterizing the hypercoagulable state following moderate-to-severe TBI.
  • To determine the temporal profile of coagulation changes, specifically focusing on maximal amplitude (MA), thrombus generation (TG), G value (G), and alpha angle (αA).

Main Methods:

  • A prospective cohort study enrolled patients with moderate-severe TBI (GCS <12).
  • TEG profiles were serially measured at multiple time points: 0-24h (T1), 24-48h (T2), 48-72h (T3), 72-96h (T4), and 96-120h (T5) post-admission.
  • Early (0-48h) and late (>48h) TEG findings were compared.

Main Results:

  • Patients exhibited significantly higher MA, TG, and G values at 96-120h post-TBI compared to controls.
  • A progressive increase in MA, TG, and G was observed over time, with significant daily increments.
  • Lower MA values showed a trend towards home discharge, suggesting a potential prognostic implication.

Conclusions:

  • The study indicates a progressive and delayed hypercoagulable state in patients following TBI, persisting for several days.
  • Elevated TEG parameters suggest increased thrombus generation and clot stability, potentially driven by enhanced platelet activity.
  • TEG analysis is valuable for detecting and monitoring the hypercoagulable state after TBI.