ABSTRACT
RESUMEN Fundamento: el extendido de sangre periférica o lámina periférica, como también se conoce, es la evaluación morfológica semicuantitativa de las tres series hematopoyéticas en una extensión de sangre periférica coloreada y observada a través del microscopio. Objetivo: elaborar un procedimiento metodológico para el extendido de sangre periférica desde una perspectiva interdisciplinar en la licenciatura en Bioanálisis Clínico. Métodos: se realizó un estudio descriptivo transversal desde septiembre a noviembre de 2018, en la facultad Tecnológica perteneciente a la Universidad de Ciencias Médicas de Camagüey. Se emplearon métodos teóricos como el análisis y síntesis, el inductivo y deductivo. De los métodos empíricos, fueron aplicados el análisis de documentos, la prueba diagnóstica exploratoria, resultados de controles a clases, la entrevista y encuesta para la validación de la propuesta. Resultados: insuficiencias en cuanto al establecimiento de las relaciones interdisciplinarias entre los contenidos de Histología y el componente hematológico de la asignatura Diagnóstico de Laboratorio I, los estudiantes mostraron dificultades en la realización de la técnica y no lograron caracterizar morfológicamente algunas de las células hematopoyéticas. Conclusiones: se elaboró un procedimiento metodológico para la técnica lámina periférica desde una perspectiva interdisciplinar y la validación de la propuesta mediante el método de consenso conformado por un grupo nominal, donde resultan las categorías de muy adecuado y adecuado para el desarrollo de la técnica lámina periférica, pues la observación de extendidos periféricos es un elemento importante en la orientación del análisis de las diferentes enfermedades, componente esencial del diagnóstico integral del laboratorio clínico.
ABSTRACT Background: the peripheral blood extension or peripheral lamina, as it is also known, is the semi-quantitative morphological evaluation of the three hematopoietic series, in an extension of peripheral blood colored and observed through the microscope. Objective: to develop a methodological procedure for the extension of peripheral blood from an interdisciplinary perspective in the degree in Clinical Bioanalysis. Methods: cross-sectional descriptive study in the period from September to November 2018, in the Technological Faculty belonging to the University of Medical Sciences of Camagüey. Theoretical methods such as analysis and synthesis and inductive and deductive methods were used. Of the empirical methods, the analysis of documents, the exploratory diagnostic test, results of controls to classes, the interview and survey for the validation of the proposal were applied. Results: insufficiencies regarding the establishment of interdisciplinary relationships between the contents of Histology and the hematological component of the Laboratory Diagnostic subject I, the students showed difficulties in performing the technique and failed to characterize morphologically some of the hematopoietic cells. Conclusions: a methodological procedure was developed for the peripheral lamina technique from an interdisciplinary perspective and the validation of the proposal by means of the consensus method formed by a nominal group where the categories of very adequate and suitable for the development of the peripheral lamina technique result. The observation of extension peripherals is an important element in the orientation of the analysis of the different diseases, an essential component of the integral diagnosis of the clinical laboratory.
ABSTRACT
BACKGROUND: The speed and quality of information have become essential items in the release of laboratory reports. The Sysmex(®)SP1000-I device has been developed to prepare and stain smear slides. However, for a device to be cleared for use in the laboratory routine it must pass through a validation process. OBJECTIVE: To evaluate the performance and reliability of the Sysmex(®) SP-1000i slide preparer-stainer incorporated into the routine of a hospital laboratory in Porto Alegre. METHODS: Peripheral blood samples of patients attending the laboratory for ambulatory exams with leukocyte counts between 7000/°L and 12,000/°L were evaluated, independent of gender and age. Two slides were prepared for each sample using the Sysmex(®) SP-1000i equipment; one of the slides was used to perform quality control tests using the CellaVision(®) DM96 device, and the other slide was used to compare pre-classification by the same device and the classification performed by a pharmacist-biochemist. RESULTS: The results of all the slides used as controls were acceptable according to the quality control test as established by the manufacturer of the device. In the comparison between the automated pre-classification and the classification made by the professional, there was an acceptable variation in the differential counts of leukocytes for 90% of the analyzed slides. Pearson correlation coefficient showed a strong correlation for band neutrophils (r = 0.802; p-value < 0.001), segmented neutrophils (r = 0.963; p-value < 0.001), eosinophils (r = 0.958; p-value < 0.001), lymphocytes (r = 0.985; p-value < 0.001) and atypical lymphocytes (r = 0.866; p-value < 0.001) using both methods. The red blood cell analysis was adequate for all slides analyzed by the equipment and by the professional. CONCLUSION: The new Sysmex(®)SP1000-i methodology was found to be reliable, fast and safe for the routines of medium and large laboratories, improving the quality of microscopic analysis in complete blood counts.
ABSTRACT
Background: The speed and quality of information have become essential items in the release of laboratory reports. The Sysmex®SP1000-I device has been developed to prepare and stain smear slides. However, for a device to be cleared for use in the laboratory routine it must pass through a validation process. Objective: To evaluate the performance and reliability of the Sysmex® SP-1000i slide preparer-stainer incorporated into the routine of a hospital laboratory in Porto Alegre. Methods: Peripheral blood samples of patients attending the laboratory for ambulatory exams with leukocyte counts between 7000/°L and 12,000/°L were evaluated, independent of gender and age. Two slides were prepared for each sample using the Sysmex® SP-1000i equipment; one of the slides was used to perform quality control tests using the CellaVision® DM96 device, and the other slide was used to compare pre-classification by the same device and the classification performed by a pharmacist-biochemist. Results: The results of all the slides used as controls were acceptable according to the quality control test as established by the manufacturer of the device. In the comparison between the automated pre-classification and the classification made by the professional, there was an acceptable variation in the differential counts of leukocytes for 90% of the analyzed slides. Pearson correlation coefficient showed a strong correlation for band neutrophils (r = 0.802; p-value < 0.001), segmented neutrophils (r = 0.963; p-value < 0.001), eosinophils (r = 0.958; p-value < 0.001), lymphocytes (r = 0.985; p-value < 0.001) and atypical lymphocytes (r = 0.866; p-value < 0.001) using both methods. The red blood cell analysis was adequate for all slides analyzed by the equipment and by the professional. Conclusion: The new Sysmex®SP1000-i methodology was found to be reliable, fast and safe for the routines of medium ...
