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Related Concept Videos

Blood Transfusion and Agglutination02:45

Blood Transfusion and Agglutination

Blood transfusion is a therapeutic measure to restore the blood volume after extensive blood loss due to an accident or a medical procedure. Blood transfusion involves drawing a certain amount of blood from a suitable donor and infusing it into the recipient.
History
The history of blood transfusion dates back to the 17th century, when early attempts were made in animals. In 1818 James Blundell, a British doctor, performed the first successful human blood transfusion. Later in 1900, Karl...
Blood Transfusion01:15

Blood Transfusion

Blood transfusion is a critical medical procedure that saves lives and treats various medical conditions. It involves transferring blood from a donor to a recipient. This process requires a thorough understanding of the ABO blood group system and its associated antigens and antibodies.
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Determination of Multiple Dosing Parameters: Loading and Maintenance Doses

A loading dose is an essential pharmacological strategy to rapidly achieve the target plasma drug concentration necessary for an immediate therapeutic effect. This approach is especially critical for drugs characterized by slow absorption or extended half-lives, where delaying therapeutic plasma levels could compromise treatment outcomes. By administering a loading dose, clinicians ensure a prompt onset of drug action, even for agents with complex pharmacokinetic profiles.Achieving steady-state...
Heart Failure VI: Adjunct Therapies01:22

Heart Failure VI: Adjunct Therapies

Additional therapies for treating patients with heart failure (HF) may include procedural interventions, supplemental oxygen, the management of sleep disorders, and nutritional therapy.Procedural InterventionsImplantable Cardioverter-Defibrillator: For patients at risk of life-threatening arrhythmias due to severe left ventricular dysfunction, an Implantable Cardioverter-Defibrillator (ICD) can detect and terminate these arrhythmias, preventing sudden cardiac death and improving survival rates.

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Related Experiment Video

Updated: May 14, 2026

Continuous Manual Exchange Transfusion for Patients with Sickle Cell Disease: An Efficient Method to Avoid Iron Overload
05:23

Continuous Manual Exchange Transfusion for Patients with Sickle Cell Disease: An Efficient Method to Avoid Iron Overload

Published on: March 14, 2017

Redefining massive transfusion when every second counts.

Stephanie A Savage1, Ben L Zarzaur, Martin A Croce

  • 1Division of Trauma and Critical Care, Department of Surgery, University of Tennessee Health Sciences Center, Memphis, Tennessee 38163, USA. ssavage1@uthsc.edu

The Journal of Trauma and Acute Care Surgery
|January 29, 2013
PubMed
Summary
This summary is machine-generated.

The critical administration threshold (CAT) definition for massive transfusion (MT) is more accurate than traditional MT criteria for predicting mortality in trauma patients. CAT identifies critically ill patients earlier, reducing survivor bias and improving transfusion protocol activation.

Related Experiment Videos

Last Updated: May 14, 2026

Continuous Manual Exchange Transfusion for Patients with Sickle Cell Disease: An Efficient Method to Avoid Iron Overload
05:23

Continuous Manual Exchange Transfusion for Patients with Sickle Cell Disease: An Efficient Method to Avoid Iron Overload

Published on: March 14, 2017

Area of Science:

  • Trauma resuscitation and critical care medicine.
  • Hemorrhagic shock management.
  • Blood transfusion strategies.

Background:

  • Traditional massive transfusion (MT) definition (>10 units/24h) is retrospective and subject to survivor bias.
  • A new framework focusing on transfusion rate and timing, termed critical administration threshold (CAT), is proposed.
  • CAT is defined as 3 units/hour, reflecting early hemorrhagic shock.

Purpose of the Study:

  • To compare the predictive accuracy of the traditional MT definition versus the CAT definition for mortality in trauma patients.
  • To evaluate the clinical utility of CAT in identifying critically ill patients.

Main Methods:

  • A diagnostic/prognostic study (Level II) included 169 trauma patients receiving transfusions within 24 hours.
  • Transfusion times were precisely recorded to calculate MT and CAT.
  • Univariate and multivariate logistic regression analyses were used to assess inpatient mortality risk.

Main Results:

  • 46% of patients met the CAT criteria (3 U/h), while 22% met the traditional MT criteria.
  • CAT was a stronger predictor of mortality (RR 3.58) compared to MT (RR 1.82).
  • Increasing CAT frequency correlated with increased mortality; CAT identified 75% of deaths, whereas MT identified only 33%.

Conclusions:

  • The traditional MT definition is inadequate for assessing trauma patient severity.
  • CAT offers a prospective method for identifying critically ill patients and mitigating survivor bias.
  • CAT can serve as an early warning trigger for transfusion protocols and should be considered in clinical trial outcome evaluations.