Medicine and Health Sciences Commons^™

Impact Of Ambient Air Pollution On Survival Of Renal Transplant Recipients, Rhonda Kristine Hwang

Loma Linda University Electronic Theses, Dissertations & Projects

There is increasing evidence that ambient air pollution is associated with coronary heart disease morbidity and mortality. This research has focused on the general public and less so on possible sensitive subgroups even though these may have even greater susceptibility to adverse effects of ambient air pollution. With highly prevalent traditional as well as nontraditional risk factors, renal transplant recipients may potentially be a sensitive subgroup. The purpose of this study was to evaluate the possible effect of between long-term exposure to air pollution on the risk of CHD mortality among renal transplant recipients. This cohort study includes 32,239 adult, …

Effects Of Functional Appliances On Pharyngeal Airway Dimensions: A Cone Beam Computed Tomography Study, Melissa K. Lee

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: Functional appliances are intended to correct by incremental advancement of the mandible for correction of skeletal Class 11 relationships. Similar in design to functional appliances, mandibular advancing devices (MAD) are used for obstructive sleep apnea (OSA) patients as they increase the size of the airway by drawing the tongue and soft palate forwards, and thus maintain its patency during sleep. It has been shown that significant increases in airway dimensions and decreases in airway resistance were gained in OSA patients while evaluated with a MAD in place. This retrospective study evaluated volumetric, cross-sectional area and linear changes in the …

Observer Reliability Of Cephalometric Landmark Identification On 3-D Mr Images, Michael S. Pollack

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: Cephalometric analysis is a cornerstone of orthodontic diagnosis, yet much information is lost when 3-dimensional structures are assessed with 2-dimensional methods. CBCT offers 3-dimensional imaging but at the cost of higher levels of ionizing radiation. Magnetic resonance imaging provides 3-dimensional imaging without ionizing radiation and additionally imparts visualization of soft tissue structures. Prior to employing MR images for cephalometric analysis, reliability of landmark identification must be assessed. The purpose of this study was to evaluate intra- and interobserver reliability in 3-dimensional landmark identification using MR images.

Materials and Methods: Fifteen cranial MR images (3.0 T, MP-RAGE) from subjects between …

Using Cone Beam Computed Tomography To Identify A Prediction Model For Obstructive Sleep Apnea, Jodi Parker

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: Obstructive Sleep Apnea (OSA) patients have increased risk of morbidity and mortality. Early diagnosis may reduce morbidity and mortality. Prediction of OSA from imaging may help to identify OSA patients earlier in life. CBCT can be used for OSA diagnostic imaging due to its three-dimensional (3D) visualization of the upper airway and craniofacial complex. Magnification associated with conventional 2D radiography is eliminated with CBCT, and radiation to the patient is significantly less than previous modalities used to measure craniofacial & airway measurements associated with OSA. During a CBCT scan, the patient's image is taken supine, rather than the upright …

Effects Of Functional Appliances On The Tmj And Mandibular Length Of Skeletal Class Ii Patients: A Cone Beam Computed Tomography Study, David C. Lee

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: Functional appliances have been efficiently used in the treatment of Class II malocclusions caused by retrognathic mandibles. Cone beam computed tomography has enabled us to make more accurate linear measurements by eliminating superimposition of other structures and to analyze skeletal anatomic detail in all three planes of space. This retrospective study evaluated the osseous changes in the temporomandibular joint (TMJ) and length of the mandible in skeletal Class II malocclusion patients treated with the fixed functional appliances and compared measurements with Class I malocclusion patients treated with orthodontic mechanics that did not alter skeletal relationships.

Materials and Methods: Twelve …

Patient/Physician Communication In Type 2 Diabetes-Related Health Behavior Change, Barbara Marie Thomas

Loma Linda University Electronic Theses, Dissertations & Projects

Adult type 2 diabetes is an increasing problem in the United States and affected over 16 million Americans in 2004. Most patients are treated in primary care settings and managed medically, but controlling insulin resistance through activity and diet is considered the greatest challenge for the next 30 years (Katen, et al., 2007). Understanding how physicians and patients communicate about health behaviors is necessary for developing the most effective strategies for facilitating health behavior change in this population. In the current study, adults with type 2 diabetes (n= 87) from the Loma Linda University Diabetes Treatment Center (LLUDTC), …

Influence Of Stainless Steel Orthodontic Brackets On Magnetic Resonance Imaging, Christian James Hoybjerg

Loma Linda University Electronic Theses, Dissertations & Projects

Introduction: Magnetic resonance imaging (MRI) machines provide 2D as well as 3D images that are excellent in contrasting soft-tissue in the maxillofacial region and are void of ionizing radiation. The drawbacks include the lack of depiction of cortical bony detail and image degradation caused by substances in the scanned area. Specifically, in the orthodontic field stainless steel brackets cause more distortion of MR images then any other bracket material. It is unknown what type of stainless steel alloy causes the most MRI distortion. The purpose of this study is to evaluate the degree of craniofacial MR distortion caused by various …

Effect Of California Mission Fig Consumption On Levels Of C-Reactive Protein And Antioxidant Levels, Rasha Abdrabou

Loma Linda University Electronic Theses, Dissertations & Projects

Polyphenols exert anti-inflammatory and antioxidant effects. We investigated the effect of consumption of polyphenol-rich figs on high sensitivity C-reactive protein (CRP) and antioxidant levels in hyperlipidemic subjects. The purpose of this study was to examine the effect of fig consumption on C-reactive protein and antioxidant levels. Analyses were carried out on collected data from September to December of 2008. Using a crossover design, one hundred and two participants were recruited and randomized into an intervention phase (eating figs) and a control phase (not eating figs) for 5 weeks. Blood samples were drawn from each group at the 4th and 5th …

The Effect Of An Educational Intervention On The Sexual Perceptions And Practices Of Adolescents In Trinidad And Tobago, Vanessa Jones

Loma Linda University Electronic Theses, Dissertations & Projects

Background. Human immunodeficiency virus (HIV) or acquired immune deficiency syndrome (AIDS) is one of the fastest spreading infectious diseases in the Caribbean, and is second only to Sub-Sahara Africa in the prevalence of HIV/AIDS cases. Trinidad and Tobago is the southernmost twin island republic in the Caribbean. In 1999, the 5^th leading cause of death among individuals ages 15-34 in Trinidad and Tobago was HIV/AIDS. According to UNAIDS (2006), the prevalence rate of HIV in Trinidad and Tobago is 2.6%.

Purpose. Currently, there is no standardized HIV/AIDS education program in secondary schools in Trinidad and Tobago. Since HIV/AIDS is …

Tuberculosis In San Bernardino County, 1993-2004 : Lifestyle And Environmental Factors, Anuj Bhatia

Loma Linda University Electronic Theses, Dissertations & Projects

An observational retrospective study was conducted for tuberculosis (TB) cases between San Bernardino County (SBC), Riverside County, and the state of California from 1996 to 2004. A univariate comparison between San Bernardino County and California indicated a higher proportion of U.S. born cases in SBC. Additionally, it was found that San Bernardino had a higher proportion of non-injection drug using TB cases, compared with California in 1996. Further comparisons were made along country of birth between TB cases in San Bernardino County from 1993 to 2004. Notable differences were observed for injection drug use, non injection drug use, alcohol abuse, …

Quality Of Life And Depression: Outcome Markers For A Weight Management Program, Cecilia Dueñas

Loma Linda University Electronic Theses, Dissertations & Projects

Pediatric obesity has become a national epidemic and current trends suggest a continued increase. Obese children have been found to have higher incidences of depression and a lower quality of life (QOL) than children from other often more severe medical populations. As a result, weight management programs are on the increase with the majority measuring outcome success through weight loss and decreased body mass index (BMI). It is evident however, that health factors are not the only factors associated with obesity, and that psychosocial components are important as well. The Loma Linda University Growing Fit Program is unique in that …

Attitudes And Beliefs That Predict Taiwanese Older Adults' Intentions To Attend Strength And Balance Training Programs, Shih-Fan Lin

Loma Linda University Electronic Theses, Dissertations & Projects

The rate of participation in the strength and balance training (SBT) program, an effective fall prevention intervention, is very low among older adults. To increase older adults' participations in SBT programs, this study involved an observational and cross-sectional study design to understand factors that affect Taiwanese older adults' intention to attend SBT programs utilizing the theory of planned behavior. Questionnaires that measured constructs of the theory of planned behavior (attitude, subjective norm, perceived behavioral control, and behavioral, normative, and control beliefs) were collected from 221 community-dwelling Taiwanese elderly women between the age of 55 and 94. Simple correlations and multiple …

Mnte-2-Pyp And Radiation In A Prostate Cancer Model: Implications For Radiotherapy, Adeola Y. Makinde

Loma Linda University Electronic Theses, Dissertations & Projects

A major limitation of successful radiation therapy in cancer treatment is the increase in normal tissue damage as higher doses are used to achieve greater tumor destruction. Radiation dose optimization in cancer therapy requires achieving maximum tumor destruction with minimal damage to normal tissue Antioxidants have been shown to protect normal tissues against radiation damage, as radiation-induced tissue damage results predominantly from reactive oxygen species that directly damage cellular components. However, for effective use as normal tissue radioprotectants in radiotherapy, these antioxidants must not protect the tumors. Mn (III) tetrakis (N-ethylpyridinium-2-yl) porphyrin (MnTE-2-PyP) is a metalloporphyrin antioxidant that has been …

Correlates Of Soy Food Consumption In Adventist Health Study-2, Yen Ang

Loma Linda University Electronic Theses, Dissertations & Projects

Much has been discussed about the health benefits and risks of soy consumption but very little is known about who the consumers are. Most of what is known has been observed mainly in Asian populations who consume high levels of soy. Very little is known about soy food intake in the western population who typically has low consumption level. The Seventh-Day Adventist cohort in North America is the only population known in the West with soy food intake that is comparable to the Asian population living in the East.

Soy consumers in a population known for its healthier lifestyle and …

Social Cognitive Predictors Of Diabetes Outcomes In Latinos And Whites, Diana Brown

Loma Linda University Electronic Theses, Dissertations & Projects

Investigating health care disparities in ethnic minority populations is an increasingly urgent issue as these disparities lead to higher morbidity and mortality in minorities (National Center of Health Statistics, 2000). There is clear evidence that Latino Americans, the fastest growing minority group in the United States, are more likely to be diagnosed with and experience more severe complications from type 2 diabetes than Anglo Americans. This study surveyed 38 White and 33 Latino diabetes patients from outpatient clinics in an academic medical center. Cultural values (individualism and collectivism), mental health (social support, mental health), and self-efficacy (diabetes and exercise) were …