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Related Concept Videos

Assessment of blood pressure in brachial artery(two-step method)01:23

Assessment of blood pressure in brachial artery(two-step method)

Measuring blood pressure is a fundamental skill in healthcare that aids in diagnosing and monitoring hypertension and other cardiovascular conditions. An aneroid sphygmomanometer, commonly used in clinical settings, offers a manual and precise method for blood pressure measurement. The technique for using this instrument involves specific steps that must be carefully executed to ensure accuracy. The following detailed description outlines a two-step technique for assessing blood pressure using...
Pre-Procedural Guidelines for Assessing Blood Pressure01:10

Pre-Procedural Guidelines for Assessing Blood Pressure

Accurate blood pressure assessment is crucial for diagnosing and managing various health conditions. To ensure the reliability of these measurements, healthcare professionals must adhere to standardized pre-procedural guidelines. These guidelines enhance patient safety and improve the overall quality of healthcare. The following steps are essential for obtaining accurate and consistent blood pressure readings, from using the appropriate tools to ensuring effective communication with the patient.

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Related Experiment Video

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A New Hybrid Quantitative Evaluation Model for Axillary Junctional Hemorrhage in Swine
08:27

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Published on: December 6, 2024

External blood loss estimation using the MAR Method.

Mark A Merlin1, Scott M Alter, Brian Raffel

  • 1University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School Department of Emergency Medicine, New Brunswick, NJ 08901, USA. merlinma@umdnj.edu

The American Journal of Emergency Medicine
|November 26, 2009
PubMed
Summary
This summary is machine-generated.

Healthcare workers can now accurately estimate blood loss using the MAR Method, a simple fist-based technique. This training improves accuracy and precision in determining blood volumes, addressing a critical gap in medical education.

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Area of Science:

  • Medical Education
  • Emergency Medicine
  • Trauma Care

Background:

  • Medical training often lacks instruction on estimating blood volumes.
  • Current visual estimation methods for blood loss are highly inaccurate.
  • Accurate blood volume estimation is critical in emergency and trauma situations.

Purpose of the Study:

  • To introduce and evaluate a novel method for estimating external blood loss using one's fist.
  • To compare the accuracy and precision of blood volume estimations before and after MAR Method training.

Main Methods:

  • Developed the MAR Method, correlating fist size to blood surface area (20 mL per fist coverage).
  • Conducted estimations of 75 mL and 750 mL blood volumes by 74 participants.
  • Assessed estimation errors before and after a 1-minute MAR Method training session.

Main Results:

  • The MAR Method demonstrated significant improvements in blood volume estimation accuracy.
  • Average error decreased by 76% for small volumes and 40% for large volumes (P < .0001).
  • Interquartile range of errors reduced by 60% and 45% for small and large volumes, respectively.

Conclusions:

  • The MAR Method significantly enhances the accuracy and precision of blood volume estimations.
  • Even brief training (under 1 minute) in the MAR Method yields substantial improvements.
  • This method offers a practical solution to improve a critical skill in healthcare settings.