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- Status: Published
2D fetal echocardiography (ECHO) can be used for monitoring heart development in utero. This study’s purpose is to empirically model normal fetal heart growth and function changes during development by ECHO and compare these to fetuses diagnosed with and without cardiomyopathy with diabetic mothers. There are existing mathematical models describing fetal heart development but they warrant revalidation and adjustment. 377 normal fetuses with healthy mothers, 98 normal fetuses with diabetic mothers, and 37 fetuses with cardiomyopathy and diabetic mothers had their cardiac structural dimensions, cardiothoracic ratio, valve flow velocities, and heart rates measured by fetal ECHO in a retrospective chart review. Cardiac features were fitted to linear functions, with respect to gestational age, femur length, head circumference, and biparietal diameter and z-scores were created to model normal fetal growth for all parameters. These z-scores were used to assess what metrics had no difference in means between the normal fetuses of both healthy and diabetic mothers, but differed from those diagnosed with cardiomyopathy. It was found that functional metrics like mitral and tricuspid E wave and pulmonary velocity could be important predictors for cardiomyopathy when fitted by gestational age, femur length, head circumference, and biparietal diameter. Additionally, aortic and tricuspid annulus diameters when fitted to estimated gestational age showed potential to be predictors for fetal cardiomyopathy. While the metrics overlapped over their full range, combining them together may have the potential for predicting cardiomyopathy in utero. Future directions of this study will explore creating a classifier model that can predict cardiomyopathy using the metrics assessed in this study.
The COVID-19 pandemic has forced educators since 2020 to shift from all in-person learning to virtual learning through applications like Zoom. Students are now part of a collage of faces including their teachers’ who often may be dealing with technical glitches, foreign-looking interfaces, and unintentionally disruptive students. On the other side, students may struggle to find a stable working environment as they learn from home. Distance learning has been explored well before 2020, but its necessity, given the nature of a virus that preys on in-person interaction, has forced itself to the top of relevant conversation. . The issues with distance learning in primary education have roots in long standing issues with the education system as a whole. Without greater public awareness of the woes in our education system, the status quo of declining academic success, teacher salaries, and increasing classroom sizes will continue in the future. The problems with distance learning specifically represent a much more everlasting issue that is lack of accountability and action of lawmakers who are able to make these reforms.
The purpose of this study was to bring new information to the field of education research on graduation rates and school programming. Research on graduation rates and the effects of school programs exist, however there is not an abundance of research aimed specifically at Title I high schools. The goal was to find what school characteristics might impact graduation rates in this population. The thesis focused on Title I high schools in the Phoenix Union District with a graduating 2019 class of at least 250 students. This limited the effect of variability (school size, location, socioeconomic status). To research this topic, school characteristics were selected including course rigor, mentor programs, and college prep programs, as well as specific schools. To obtain the information, multiple sources were used including the Arizona Department of Education website, school websites, and school administrators/staff. The research revealed that the effect of course rigor, college prep programs, and mentorship on graduation rates in Phoenix Union High Schools is not apparent. Further research should be conducted into other possible causes for the gaps in graduation rates between the Title I high schools in this district. Future research on ELL students and programs in the Phoenix Union district and their effectiveness or lack thereof is also recommended. The research shows that this large demographic negatively correlates with the overall graduation rates at the six schools researched.