Programs and Communities

Background: Extreme heat is a public health challenge. The scarcity of directly comparable studies on the association of heat with morbidity and mortality and the inconsistent identification of threshold temperatures for severe impacts hampers the development of comprehensive strategies aimed at reducing adverse heat-health events.

Objectives: This quantitative study was designed to link temperature with mortality and morbidity events in Maricopa County, Arizona, USA, with a focus on the summer season.

Methods: Using Poisson regression models that controlled for temporal confounders, we assessed daily temperature–health associations for a suite of mortality and morbidity events, diagnoses, and temperature metrics. Minimum risk temperatures, increasing risk temperatures, and excess risk temperatures were statistically identified to represent different “trigger points” at which heat-health intervention measures might be activated.

Results: We found significant and consistent associations of high environmental temperature with all-cause mortality, cardiovascular mortality, heat-related mortality, and mortality resulting from conditions that are consequences of heat and dehydration. Hospitalizations and emergency department visits due to heat-related conditions and conditions associated with consequences of heat and dehydration were also strongly associated with high temperatures, and there were several times more of those events than there were deaths. For each temperature metric, we observed large contrasts in trigger points (up to 22°C) across multiple health events and diagnoses.

Conclusion: Consideration of multiple health events and diagnoses together with a comprehensive approach to identifying threshold temperatures revealed large differences in trigger points for possible interventions related to heat. Providing an array of heat trigger points applicable for different end-users may improve the public health response to a problem that is projected to worsen in the coming decades.

Maricopa County, Arizona, anchor to the fastest growing megapolitan area in the United States, is located in a hot desert climate where extreme temperatures are associated with elevated risk of mortality. Continued urbanization in the region will impact atmospheric temperatures and, as a result, potentially affect human health. We aimed to quantify the number of excess deaths attributable to heat in Maricopa County based on three future urbanization and adaptation scenarios and multiple exposure variables.

Two scenarios (low and high growth projections) represent the maximum possible uncertainty range associated with urbanization in central Arizona, and a third represents the adaptation of high-albedo cool roof technology. Using a Poisson regression model, we related temperature to mortality using data spanning 1983–2007. Regional climate model simulations based on 2050-projected urbanization scenarios for Maricopa County generated distributions of temperature change, and from these predicted changes future excess heat-related mortality was estimated. Subject to urbanization scenario and exposure variable utilized, projections of heat-related mortality ranged from a decrease of 46 deaths per year (− 95%) to an increase of 339 deaths per year (+ 359%).

Projections based on minimum temperature showed the greatest increase for all expansion and adaptation scenarios and were substantially higher than those for daily mean temperature. Projections based on maximum temperature were largely associated with declining mortality. Low-growth and adaptation scenarios led to the smallest increase in predicted heat-related mortality based on mean temperature projections. Use of only one exposure variable to project future heat-related deaths may therefore be misrepresentative in terms of direction of change and magnitude of effects. Because urbanization-induced impacts can vary across the diurnal cycle, projections of heat-related health outcomes that do not consider place-based, time-varying urban heat island effects are neglecting essential elements for policy relevant decision-making.

Preventing heat-associated morbidity and mortality is a public health priority in Maricopa County, Arizona (United States). The objective of this project was to evaluate Maricopa County cooling centers and gain insight into their capacity to provide relief for the public during extreme heat events. During the summer of 2014, 53 cooling centers were evaluated to assess facility and visitor characteristics. Maricopa County staff collected data by directly observing daily operations and by surveying managers and visitors. The cooling centers in Maricopa County were often housed within community, senior, or religious centers, which offered various services for at least 1500 individuals daily. Many visitors were unemployed and/or homeless. Many learned about a cooling center by word of mouth or by having seen the cooling center’s location. The cooling centers provide a valuable service and reach some of the region’s most vulnerable populations. This project is among the first to systematically evaluate cooling centers from a public health perspective and provides helpful insight to community leaders who are implementing or improving their own network of cooling centers.

The City of Phoenix Street Transportation Department partnered with the Rob and Melani Walton Sustainability Solutions Service at Arizona State University (ASU) and researchers from various ASU schools to evaluate the effectiveness, performance, and community perception of the new pavement coating. The data collection and analysis occurred across multiple neighborhoods and at varying times across days and/or months over the course of one year (July 15, 2020–July 14, 2021), allowing the team to study the impacts of the surface treatment under various weather conditions.

As Baby Boomers age, the number of older homeless patients facing end of life is increasing. Homeless individuals die of the same diseases as their domiciled counterparts, but they have distinct barriers to equitable end-of-life care, such as lack of regular medical care, a higher likelihood of comorbid serious mental illness and substance abuse, alienation from potential healthcare proxies, and specific fears related to dying. Completion of an advance directive (AD) would address many of these barriers, as well as national goals of reducing medical costs associated with end of life care. A review of the literature indicates that homeless individuals, once educated on the purpose and significance of ADs, complete them at a higher rate than non-homeless people. Further, racial and ethnic disparities in document completion are minimized with educational interventions about an AD’s purpose.

King’s Theory of Goal Attainment provides the theoretical basis for the application of such an intervention in the setting of a medical respite center and a day resource center that both serve the homeless. Thirty-seven clients of the two sites and 14 staff members were administered a pre-and post-test measuring attitudes and knowledge relating to ADs on a Likert scale, resulting in an increase in knowledge about one of the two documents that traditionally comprise an AD, while not significantly affecting attitudes. Implications for practice include an inexpensive intervention that does not require a medically trained individual to deliver, enabling a broad application to a variety of settings with the goal of empowering a traditionally disenfranchised population to make health decisions related to the most vulnerable of life passages.

Functional GI disorders are categorized as a group of chronic symptoms that are considered to have no abnormalities that can account for patient’s illnesses. Included in this category are those patients with irritable bowel syndrome. Functional GI issues are an important public health concern as they are becoming increasingly more common; they can be disabling and can cause significant socioeconomic burden in regard to health care costs, productivity and disability. There is strong evidence that probiotics have the potential to reduce IBS symptoms. Unfortunately, probiotics are underutilized in the clinical setting.

The purpose of this project is to increase knowledge and self-efficacy in patients with functional GI symptoms regarding the use of probiotics for symptom management. Patients in an outpatient GI practice in Southwestern United States with chronic functional GI symptoms were shown an educational video regarding the origins and benefits of using probiotics to manage chronic symptoms. Knowledge of probiotics, self-efficacy and willingness to utilize probiotics was measured by asking participants to complete a modified Health Belief Model survey before and after viewing the video. Patient demographics were collected. There were 75 participants (n=75) who participated in the project with a mean age of 40.3 years (SD=15.41), 85% female and 15% male. Wilcoxon signed rank test were used to analyze changes in paired data with significant improvements in self-efficacy (Z=3.93, p< .01), benefits of probiotic use (Z=4.33, p<.01) and decreased barriers to probiotics use (Z=-4.31, p<.01). After participants viewed the educational video, 95% of patients indicated they would try probiotics (CI 95%, p<.01) versus 65% of patients who would try probiotics before viewing video. In conclusion, education regarding using probiotics to manage functional GI symptoms improved patient’s self-efficacy and their willingness to use probiotics to manage their symptoms. Keywords: probiotics, GI disorders, diarrhea, IBS, constipation, abdominal pain, self-efficacy.

INCREASED EDUCATION AND SELF-EFFICACY IN PROBIOTIC USE:
Education and Self-efficacy of Probiotic Use in Patients with Chronic Gastrointestinal Symptoms
Functional gastrointestinal (GI) disorders are categorized as a group of chronic symptoms that are considered to have no structural or biochemical abnormalities that can account for patient’s illness. Included in this category are those patients diagnosed with irritable bowel syndrome (IBS). IBS is chronic GI disorder characterized by abdominal pain accompanied by altered bowel function, gas and bloating without the presence of organic disease (Mapel, 2013). Functional gastrointestinal symptoms typically include complaints of long-standing issues (greater than 3 months) of diarrhea, abdominal pain, constipation, gas and bloating.

Background:
Thirty to fifty percent of cancer patients undergoing chemotherapy will experience
chemotherapy induced nausea and or vomiting (CINV) despite the use of antiemetic prophylaxis Uncontrollable CINV can lead to complications that add extra stress to patients, increase in healthcare costs, and utilization of resources. CINV can lead to chemotherapy dose reductions, treatment delays, chemotherapy changes, or discontinuation of treatment. Guidelines exist to better prevent and treat CINV. Evidence supports the use of guidelines to prevent CINV, however patients still suffer from CINV often due to a lack of guideline adherence.

Objectives:
The purpose of this project was to increase CINV guideline adherence by increasing knowledge of antiemetic guidelines utilizing an educational intervention for providers and nurses at an outpatient oncology office.

Methods:
A brief educational intervention on CINV and recommended NCCN guidelines was
conducted with providers and nurse (n=6) at an oncology practice in Southwestern United States. An evaluation to assess change in knowledge was performed using a pre and post test format. Statistical analysis was performed using descriptive statistics, McNemar tests and Wicoxan Signed Rank Test.

Findings:
There was a significant effect on knowledge of NCCN antiemetic guidelines (Z=-1.89, p=0.059, mean 2.5) post intervention. There also was a significant impact on likelihood to use guidelines in practice (Z=-1.89, p=0.059, mean 2.5). Increasing awareness and likelihood to CHEMOTHERAPY INDUCED NAUSEA AND VOMITING 3 follow recommended guidelines may improve CINV symptoms in patients undergoing chemotherapy and improve the treatment outcomes for these patients.