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Related Concept Videos

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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.
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Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
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Related Experiment Video

Updated: Mar 15, 2026

A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time
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Routine coagulation testing in intensive care.

Steven Musca1, Shilpa Desai2, Brigit Roberts2

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Summary

A clinical guideline significantly reduced unnecessary coagulation tests and costs in an intensive care unit (ICU). This initiative improved efficiency and resource utilization in patient care.

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Area of Science:

  • Critical Care Medicine
  • Clinical Pathology
  • Health Economics

Background:

  • Routine coagulation testing in intensive care units (ICUs) can be excessive.
  • Unnecessary tests lead to increased healthcare costs and potential patient harm.
  • Optimizing testing protocols is crucial for efficient patient management.

Purpose of the Study:

  • To evaluate the effectiveness of a simple clinical guideline in reducing routine coagulation testing.
  • To assess the impact of the guideline on associated pathology costs.
  • To improve the efficiency of diagnostic testing in a tertiary ICU setting.

Main Methods:

  • A prospective, unblinded, observational study design was employed.
  • Coagulation testing frequency and costs were compared before and after guideline implementation.
  • The study included 253 patients admitted to a tertiary ICU over a 5-month period.

Main Results:

  • Coagulation testing frequency decreased from 1.12 to 0.41 tests per patient bed-day (P < 0.001).
  • Approximately 64% of pre-intervention coagulation profiles were deemed unnecessary.
  • Pathology costs associated with coagulation tests decreased by 60.5% per bed-day post-intervention.

Conclusions:

  • A straightforward clinical guideline, coupled with an educational program, effectively reduced unnecessary coagulation tests.
  • The intervention led to significant cost savings in a tertiary referral ICU.
  • This strategy offers a practical approach to optimizing laboratory test utilization in critical care settings.