Accuracy of training blood volume quantification using a visual estimation tool

Area of Science:

• Forensic Science
• Medical Education
• Emergency Medicine

Background:

• Accurate quantification of blood volumes is essential in forensic investigations and emergency medical scenarios.
• Estimating blood volumes on diverse surfaces presents a significant challenge for medical personnel.

Purpose of the Study:

• To evaluate the effectiveness of a novel visual estimation tool in improving blood volume quantification accuracy.
• To assess the impact of training with this tool on the sensitivity of blood volume estimations.

Main Methods:

• A prospective, paired-control, single-blinded study involving anesthesiologists and emergency medical personnel.
• Participants estimated blood volumes on various surfaces (carpet, towel, PVC, wood) before and after training with the visual estimation tool.
• Sensitivity analysis was performed to compare pre- and post-training estimation accuracy.

Main Results:

• A total of 352 estimations from 44 participants were analyzed.
• Significant improvement in estimation accuracy was observed post-training (P<0.05).
• The sensitivity of blood volume quantification after training reached 33.0%, independent of estimator experience or demographics.

Conclusions:

• Training with the specialized visual estimation tool demonstrably enhances the accuracy of blood volume quantification.
• This tool is effective for professional rescuers in estimating blood volumes on surfaces with varying absorptivity.
• The findings support the integration of such visual aids in medical training for improved forensic and emergency response capabilities.