نتایج جستجو برای: visual estimation
تعداد نتایج: 614226 فیلتر نتایج به سال:
background: post partum hemorrhage is one of the common causes in maternal morbidity and mortality and its outcome depends on accurate estimation of blood loss which needs acquiring skills. in this study, we decided to evaluate the effect of education on visual blood volume estimation by using simulation. method: this prospective study was done in mashhad university of medical sciences and 40 o...
Background: Postpartum hemorrhage is a leading cause of maternal morbidity and mortality that is preventive by appropriate estimation of blood loss and its treatment. This study was undertaken to evaluate the accuracy of visual estimation of postpartum hemorrhage by clinicians and co worker who work in the obstetrics department. Methods: In this descriptive observational study, 199 educational...
background: in pediatric resuscitation, it is necessary to distinguish the weight in order to provide proper doses of drugs, equipment selection, and ventilator settings, therefore, access to a simple, unbiased, and accurate formula can decrease mistakes. the aim of this study is to determine the percentage of error (pe) of different weight estimation methods toward actual weight in children a...
objectives to develop a guide to estimate blood absorbed by surgical gauze. materials and methods a clinical experiment was conducted using aspirated blood and common surgical gauze to create a realistic amount of absorbed blood in the gauze. different percentages of staining were photographed to create an analogue for the amount of blood absorbed by the gauze. results a visual analogue scale w...
Background and purpose: Postpartum hemorrhage is one of the most common causes of maternal deaths worldwide. Most deaths associated with hemorrhage occur due to delay in diagnosis and proper management of bleeding. This study aimed to evaluate the accuracy of postpartum hemorrhage estimation using artificial blood. Materials and methods: This descriptive study was performed in 92 midwifery stu...
Due to some physiological and physical limitations in the brain and the eye, the human visual system (HVS) is unable to perceive some changes in the visual signal whose range is lower than a certain threshold so-called just-noticeable distortion (JND) threshold. Visual attention (VA) provides a mechanism for selection of particular aspects of a visual scene so as to reduce the computational loa...
Background: Post partum hemorrhage is one of the common causes in maternal morbidity and mortality and its outcome depends on accurate estimation of blood loss which needs acquiring skills. In this study, we decided to evaluate the effect of education on visual blood volume estimation by using simulation. Method: This prospective study was done in Mashhad University of Medical Sciences and 40 o...
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