Title |
Workload efficiency in the hematology laboratory. |
Publication Type |
thesis |
School or College |
School of Medicine |
Department |
Pathology |
Author |
Muñoz, Omar |
Date |
2008-05 |
Description |
In spite of the demonstrated accuracy of modern hematology analyzers, many laboratories repeat critical and delta results. No studies have evaluated the efficacy of repeating these results. Manual review of blood smears is a practice with considerable variability and also poorly studied. In this study we evaluated the analytical yield from repeating samples, and the efficacy of the criteria that trigger slide review and manual differentials. A retrospective analysis of approximately 2000 consecutive, repeated results were compared graphically and statistically. Approximately 1500 patients slides reviewed according to current institutional criteria were retrospectively evaluated according to the International Consensus Group for Hematology Review (ICGHR) criteria. Another 500 samples were reviewed prospectively to evaluate the relative efficiencies of the ICGHR and current review criteria. A survey tool assessing current review and repeat practices was sent to a sample of U.S. laboratories. The analytical yield for repeat analysis was negligible. Survey results revealed that 68.2% of laboratories always repeat critical results, while only 39.7 % always repeat delta results. A significant proportion of laboratories were not aware of the ICGHR review criteria (35.3 %). Application of the ICGHR review criteria would have reduced the number of manual differentials performed, but not the fraction of smears reviewed. Repeat analysis of critical and delta results is highly inefficient and unnecessary. Wide application of the ICGHR review criteria would reduce the number of manual differentials performed in laboratories. |
Type |
Text |
Publisher |
University of Utah |
Subject |
Laboratories; Utilization |
Subject MESH |
Hematology; Laboratory Techniques and Procedures |
Dissertation Institution |
University of Utah |
Dissertation Name |
MS |
Language |
eng |
Relation is Version of |
Digital reproduction of " Workload efficiency in the hematology laboratory." Spencer S. Eccles Health Sciences Library. Print version of "Workload efficiency in the hematology laboratory." available at J. Willard Marriott Library Special Collection. RB86.5 2008 .M85 |
Rights Management |
© Omar Muñoz |
Format |
application/pdf |
Format Medium |
application/pdf |
Identifier |
us-etd2,76324 |
Source |
Original: University of Utah Spencer S. Eccles Health Sciences Library (no longer available). |
ARK |
ark:/87278/s60s03wb |
Setname |
ir_etd |
ID |
192317 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s60s03wb |