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Coagulation01:06

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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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A complementation test is a simple cross to identify whether the two mutations are located on the same gene or different genes. It was first performed by Edward Lewis in the 1940s while working on fruit flies. He developed the test to identify the location and arrangement of different mutations on chromosomes.
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Critical Region, Critical Values and Significance Level01:16

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The critical region, critical value, and significance level are interdependent concepts crucial in hypothesis testing.
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A critical value is a definite value obtained from a particular probability distribution at a predecided confidence level (or a predecided significance level) for a given population parameter. The critical value provides demarcation that separates the sample statistics that are likely to occur from the ones that are unlikely to occur based on the given probability distribution and the population parameter to be estimated. The critical value for normal distribution is obtained from the z...
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Coagulation and complement system in critically ill patients.

H Helling1, B Stephan2, G Pindur2

  • 1University Hospital of North Norway, Tromsoe, Norway.

Clinical Hemorheology and Microcirculation
|September 28, 2015
PubMed
Summary
This summary is machine-generated.

In critical illness, complement system activation is key in sepsis, while multiple trauma involves blood component loss. Non-survivors had higher organ failure scores and abnormal coagulation, indicating their predictive value.

Keywords:
Septicemiacoagulationcomplementcritical illnessmultiple trauma

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Area of Science:

  • Critical care medicine
  • Pathophysiology of critical illness
  • Hemostasis and inflammation

Background:

  • Coagulation and inflammatory responses, including the complement system, are crucial in critical illness pathogenesis.
  • Limited data exist on the interplay between coagulation and complement pathways and their predictive value in intensive care.

Purpose of the Study:

  • To investigate coagulation and complement system parameters in patients with sepsis and multiple trauma.
  • To assess the predictive value of these parameters for clinical outcomes in intensive care.

Main Methods:

  • Studied 34 intensive care unit patients (sepsis and multiple trauma) on day 1 of admission.
  • Measured leukocytes, complement factors (C3a, C5a), platelet count, plasma fibrinogen, thrombin-antithrombin-complex, DIC scores, protein C, C1-inhibitor activity, lactate, and multiple organ failure (MOF) scores.

Main Results:

  • Sepsis patients had higher leukocytes and complement factors (C3a, C5a); trauma patients had lower platelets and fibrinogen.
  • Thrombin-antithrombin-complex was higher in trauma; overt DIC was not observed.
  • Non-survivors were older, with higher MOF scores, lactate, abnormal prothrombin times, and lower C1-inhibitor activity.

Conclusions:

  • Complement system activation is significant in sepsis; blood component loss characterizes multiple trauma.
  • Reduced protein C may impact sepsis survival.
  • MOF score, lactate, C1-inhibitor, and prothrombin time predict lethal outcomes, highlighting the importance of organ function, microcirculation, and hemostasis.