Prospection for metrological control in medical scales and sphygmomanometers in the state of Santa Catarina – Brazil

Paiva, M R; Filho, O. Pohlmann; Soratto, Alexandre Nixon

doi:10.1088/1742-6596/575/1/012047

Cited by 3 publications

(1 citation statement)

References 1 publication

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“…Consequently, the study highlighted the importance of generating models to estimate uncertainty in medical equipment and greater urgency in high use in clinical practice, such as sphygmomanometers. In this same sense, the National Institute of Metrology, Quality and Technology (INMETRO) of Brazil has developed regulations that delegate powers to a network of competent state institutes to carry out the mandatory verification of medical equipment used for weighing adults, pediatric scales, and sphygmomanometers [4]. It is reported that the lack of metrological control or verification, as well as the inadequate frequency of verification of these instruments, are generally the cause of measurement errors, followed by an erroneous or inadequate diagnosis, which puts the well-being of the patient at risk.…”

Section: Introductionmentioning

confidence: 99%

Estimación de la incertidumbre en la calibración de esfigmomanómetros según OIML R16-1 desde una perspectiva de metrología legal

Ramírez-Barrera

Delgado-Trejos

Ramírez-Gómez

2021

IyU

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Objetivo: Estimar la incertidumbre en la calibración de esfigmomanómetros bajo la OIML R16-1 desde una perspectiva de metrología legal. Materiales y métodos: Se seleccionaron aleatoriamente cuatro (4) esfigmomanómetros de diferentes marcas con resolución de 2 mmHg para realizar la calibración, la cual consiste en realizar comparaciones directas entre el esfigmomanómetro y un manómetro patrón digital con resolución de 0,01 mmHg, generando presión por medio de una pinza neumática. La incertidumbre se estima usando la Guía para la Expresión de la Incertidumbre de Medida (GUM) y la recomendación internacional OIML R16-1, mediante dos series de mediciones, cada una con secuencia ascendente y descendente, para obtener en cada caso 4 mediciones con su error correspondiente. Resultados y discusión: Se obtiene la representación de la incertidumbre en sus expresiones tipo A, tipo B y expandida, por medio de un modelado físico y matemático no estocástico. De las series de mediciones obtenidas del esfigmomanómetro en los procesos de calibración, se analizan los aportes obtenidos de incertidumbre, donde se infiere que la incertidumbre predominante, en la mayoría de los casos, es por resolución del equipo, seguido del comportamiento del equipo en la prueba de repetibilidad e histéresis. Conclusiones: La estructura propuesta para la estimación de la incertidumbre sigue los lineamientos internacionales y puede usarse también en procesos de aprobación de modelo para un impacto final en la seguridad del paciente.

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Section: Introductionmentioning

confidence: 99%

Estimación de la incertidumbre en la calibración de esfigmomanómetros según OIML R16-1 desde una perspectiva de metrología legal

Ramírez-Barrera

Delgado-Trejos

Ramírez-Gómez

2021

IyU

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Legal metrological verification in health area in Brazil

Soratto

Nunes

Cassol

2019

J. Phys.: Conf. Ser.

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Presents the method used by Inmetro to measure the coverage of periodic metrological verification of sphygmomanometry and clinical scales in Brazil in 2018. It was used the Metrological Verification Coverage Ratio, that represents the percentage of healthcare facilities that received the periodic metrological verification service on the total number of healthcare facilities in the country. The results reveal great opportunity for growth of the instrument verification in several sectors, helps to size of the workforce and provides strategic information for the planning and execution of mandatory metrological verification in Brazil.

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Method for determining uncertainty and error in the process of ophthalmic lens calibration

Salgar-Marín

Vargas

Ramírez-Barrera

2021

TecnoL.

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In the present investigation, a scientific procedure was developed, and a mathematical model was proposed, with the objective of determining, under standard conditions, the uncertainty, and the measurement of dioptric power in ophthalmic lenses. The methodology of the scientific procedure is based on the fundamentals of geometric optics, this process guarantees and establishes a standardized uncertainty measure in repeatable and reproducible processes. The methodology is complemented with a proposed mathematical model based on the guide for the expression of uncertainty in measurement - GUM. This model can be applied to lenses used for calibrating eye care equipment (such as lensometers, which are used to diagnose myopia and farsightedness) by evaluating the lenses without having direct contact with patients. When the proposed mathematical model was applied, its experimental result was a maximum expanded uncertainty of ± 0.0079 diopters in a 0.5-diopter lens. This is optimal compared to the result of other authors this article, who reported a maximum expanded uncertainty of ± 0.0086 diopters. In conclusion, the application of this scientific procedure provides manufacturers and users of this type of lenses with a reliable measurement thanks to a calibration process based on geometrical optics and centered on patient safety.

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Prospection for metrological control in medical scales and sphygmomanometers in the state of Santa Catarina – Brazil

Cited by 3 publications

References 1 publication

Estimación de la incertidumbre en la calibración de esfigmomanómetros según OIML R16-1 desde una perspectiva de metrología legal

Estimación de la incertidumbre en la calibración de esfigmomanómetros según OIML R16-1 desde una perspectiva de metrología legal

Legal metrological verification in health area in Brazil

Method for determining uncertainty and error in the process of ophthalmic lens calibration

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