Images from a generic videodisc called the 'Slice of Life' were utilized to develop computer-assisted interactive videodisc instruction (IVI) units for supplemental independent review of the laboratory cases studied in the general pathology course for year 1 medical students. Four units based on laboratory cases (two on 'inflammation' and two on 'neoplasia') were developed for a dual-screen Macintosh system. With this dual-screen system, specific picture frames from the videodisc could be retrieved on one screen while the other screen displayed the corresponding text. Each unit contained a number of case studies, each of which consisted of a clinical profile, gross picture and description of the tissue removed, sequential photomicrographs at successively higher magnifications from various fields of slides and their descriptions, comparison with the normal histology of the organ involved, interpretation of the observations and comments, final diagnosis, and a quiz at the end. Histopathological features were specifically emphasized. Evaluation of the units obtained from three consecutive classes of students indicated that these units were received as valuable supplemental tools for independent review of the laboratory cases.
IntroductionThe Broselow tape (BT) is a useful pediatric tool for weight estimation and dosing reference during emergency care. Many accuracy studies have been performed for various countries and regions of the world but there is very little information for Latin American countries. The primary objective of the study was to assess the accuracy of the BT in a Peruvian pediatric population.
MethodsThis was a retrospective cross-sectional study of 1,160 children aged two to 19 years from three outpatient clinics in La Libertad, Lima, and Iquitos, Peru. Patient height and weight were measured and compared with the weight and color zone generated by the 2017 edition of the BT. Accuracy was estimated by statistical comparison of mean absolute percent differences, error within 10% (EW10), and color zone agreement.
ResultsComparison of mean differences between measured weight (MW) and estimated BT weight shows that the BT underestimates actual weight for all color zones in this population. Likewise, the Bland-Altman plot of agreement between estimated and measured weights shows an overall underestimation, or bias, equal to 1.60 kg. The overall percent difference was -7.84% with differences gradually increasing for weights over 10 kg. In terms of accuracy, the overall error within 10% was 62.8%.
ConclusionThe BT underestimates the actual weight of Peruvian pediatric patients in all color categories, particularly in children with higher body mass indexes. Underestimation of weight may lead to the use of non-therapeutic medication doses or incorrect equipment sizes and, subsequently, ineffective resuscitation.
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