Journal
AMERICAN JOURNAL OF EMERGENCY MEDICINE
Volume 27, Issue 6, Pages 709-711Publisher
W B SAUNDERS CO-ELSEVIER INC
DOI: 10.1016/j.ajem.2008.05.020
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Purpose: Emergency department (ED) patients frequently estimate blood loss. How such information should guide evaluation and management, however, is unclear. The objective of this study was to examine ED patient accuracy in estimating blood loss on different surfaces. Methods: A convenience sample of 100 ED patients were asked to estimate the amount of moulage blood present in 4 scenarios: 178 mL spilled in a baking sheet on the floor; 5 mL in 2.5 mL of mucous in a tissue; 119 mL on a t-shirt; and 119 mL in a commode filled with water. Results: The mean percent error for all estimates was 412% with a range of 0% to 1080%. Estimates were within 100% of the actual amount 44% of the time. Eleven percent of assessments were correct and 70% were overestimates. Conclusion: Emergency department patients do not estimate blood loss well in a variety of scenarios, erring on the side of overestimation. (C) 2009 Elsevier Inc. All rights reserved.
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