Defense Date


Document Type


Degree Name

Master of Science


Health Related Sciences

First Advisor

Thomas Bowman


This research utilized a descriptive study to establish a relationship between educational background and accuracy of estimating blood loss. The null hypothesis, that the educational background of health care providers in the operating room has no effect on the accuracy of estimating blood loss , was tested. Ten nurse anesthesia students, 8 certified registered nurse anesthetists, 16 operating room registered nurses, 12 anesthesiologists, and 9 surgeons were included in the sample population. A number of different protocols were utilized to assess the relative accuracy of blood volumes estimates. The study was separated into four stations. Station 1 consisted of three tables, each with different sizes and types of sponges with varying amounts of blood placed on them. Four estimates were required at each table, for a total of 12 estimates. Stations 2-3-4 contained different aggregates of blood-soaked materials, requiring a single estimate at each station. Repeated measures analysis of variance (ANOVA) revealed that the means across all groups in Station 1 reached statistical significance beyond p = .05 (< .001), and the hypothesis is rejected for equal group means. However, the results for Stations 2-3-4 for equal group means did not reach statistical significance ( p = .136), therefore, do not reject the null hypothesis of equal group means.


Scanned, with permission from the author, from the original print version, which resides in University Archives.


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Nursing Commons