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Related Concept Videos

Extrinsic and Intrinsic Pathways of Hemostasis01:20

Extrinsic and Intrinsic Pathways of Hemostasis

Blood clotting or coagulation involves extrinsic and intrinsic pathways, which ultimately merge into the common pathway, forming a fibrin clot.
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which forms a...
Introduction to Hemostasis01:05

Introduction to Hemostasis

Hemostasis is a complex physiological process that prevents excessive bleeding when a blood vessel is injured. It's crucial for maintaining the integrity of the circulatory system, as it ensures that our blood remains fluid while still within the vascular network and yet clots to prevent blood loss upon vessel injury.
The three phases of hemostasis involve many clotting factors present in plasma and several substances released by platelets and injured tissue cells. It is a fast, localized, and...
Vascular Spasm01:16

Vascular Spasm

The vascular phase, also known as vasospasm, is the initial stage of hemostasis, crucial for preventing excessive bleeding when a blood vessel is injured. After a vessel is cut, nerves in the damaged area trigger pain and other sensory impulses. Simultaneously, the smooth muscles in the vessel wall contract, resulting in a vascular spasm. This contraction reduces the vessel's diameter at the injury site, slowing or stopping blood loss through the vessel wall. Vascular spasms typically last for...
Anticoagulant Drugs: Low-Molecular-Weight Heparins01:30

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...
Autoregulation of Blood Flow01:17

Autoregulation of Blood Flow

Autoregulation mechanisms are characterized by their inherent capacity for self-regulation without necessitating specific nervous stimulation or endocrine control. These mechanisms facilitate the adjustment of blood flow and, therefore, perfusion specific to each tissue region. This self-regulation encompasses chemical signals and myogenic controls.
Chemical Signaling in Autoregulation
Chemical signaling operates at the precapillary sphincter level, inciting either contraction or relaxation.
Coagulation01:09

Coagulation

The coagulation phase is a critical part of the body's process to prevent blood loss following injury to blood vessels. It involves chemical reactions that form a clot to seal the injured area. The clotting process begins shortly after injury, within 15-20 seconds for severe damage and 1-2 minutes for minor injuries.
During the coagulation phase, clotting factors, or procoagulants, play a vital role in initiating and progressing the coagulation cascade. This cascade is a series of reactions...

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Related Experiment Video

Updated: May 13, 2026

A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time
09:38

A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time

Published on: February 14, 2017

Automation in haemostasis.

A R Huber1, A Méndez, S Brunner-Agten

  • 1Prof. Dr. med. Andreas R. Huber, Centre for Laboratory Medicine, Kantonsspital Aarau AG, Tellstrasse, 5001 Aarau, Switzerland, Tel. +41/(0)62/838 53 02, Fax +41/(0)62/838 53 99,

Hamostaseologie
|March 6, 2013
PubMed
Summary
This summary is machine-generated.

Laboratory automation, including in coagulation testing, enhances efficiency and reduces errors. Future labs will focus on interpretation and clinical support, with the human role evolving.

Keywords:
Coagulation testingautomationhaemostasis

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A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time
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A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time

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Microfluidic Flow Chambers Using Reconstituted Blood to Model Hemostasis and Platelet Transfusion In Vitro
10:25

Microfluidic Flow Chambers Using Reconstituted Blood to Model Hemostasis and Platelet Transfusion In Vitro

Published on: March 19, 2016

Area of Science:

  • Clinical Laboratory Science
  • Medical Diagnostics

Background:

  • Automation has significantly advanced clinical chemistry and expanded into hematology, immunology, molecular biology, and coagulation testing.
  • Early standalone instruments have evolved into complex, multitasking systems, enabling integration into total laboratory automation.

Purpose of the Study:

  • To review the evolution and impact of automation in medical laboratories, particularly in coagulation testing.
  • To discuss the benefits and challenges of laboratory automation and its future implications.

Main Methods:

  • Review of automation trends in various laboratory disciplines.
  • Analysis of strengths (standardization, error reduction, cost-efficiency, throughput) and weaknesses (manufacturer dependence, high initial cost, maintenance) of automation.

Main Results:

  • Automation offers standardization, error reduction, cost savings, and increased throughput in laboratory testing.
  • Challenges include manufacturer dependency, high setup costs, and ongoing maintenance expenses.

Conclusions:

  • Modern laboratory automation shifts the focus from manual processing to higher-value tasks like result interpretation and clinical support.
  • The human role in hemostasis testing will remain crucial but will adapt to a more consultative capacity.