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1.
Cureus ; 16(2): e54523, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38516498

RESUMEN

Introduction Prostate cancer and hepatitis C virus (HCV) infection stand as notable worldwide health issues. Investigating the connection between HCV infection and the risk of prostate cancer remains an ongoing endeavor, complicated by contradictory findings in prior research. It is imperative to comprehend this potential relationship in order to enhance strategies for prevention and treatment. This paper seeks to delve into the association between HCV infection and prostate cancer by analyzing data from the National Health and Nutrition Examination Survey (NHANES), a comprehensive cross-section of the US population. Methods Information extracted from the NHANES dataset encompassed the period spanning from March 2017 to March 2020, with a focus on the "medical conditions" and "hepatitis" segments. Employing logistic regression analysis, we aimed to discern the connection between HCV infection and the prior occurrence of prostate cancer. This analysis was conducted while factoring in variables such as weight, hypertension, hyperlipidemia, race, educational level, and marital status to ensure the accuracy of the findings. The results of this examination yielded adjusted odds ratios (OR), coefficients of association (B), and corresponding confidence intervals (CI). Results  The outcomes derived from the comprehensive multivariate logistic regression analysis, utilizing NHANES data, indicated an absence of a statistically noteworthy correlation between HCV infection and the probability of prostate cancer occurrence. While accounting for diverse variables like weight, hypertension, hyperlipidemia, race, educational level, and marital status, no substantial relationship was observed between HCV infection and the risk of prostate cancer. These results are consistent with earlier investigations that similarly struggled to establish a definitive connection between HCV infection and the incidence of prostate cancer. Conclusion  Drawing from NHANES data, this study indicates the absence of a substantial link between HCV infection and the incidence of prostate cancer. The divergent findings observed in prior research accentuate the intricate nature of the connection between HCV infection and prostate cancer. Future investigations should encompass more extensive sample sizes, prospective frameworks, and a meticulous assessment of potential variables that might confound the results. Furthermore, it is important to examine the potential protective impact of HCV infection due to antiviral interventions and its effect on the associated risk of prostate cancer. Such endeavors would offer valuable insights for individuals grappling with these health challenges.

2.
Cureus ; 15(6): e40058, 2023 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-37425589

RESUMEN

Introduction Gout is a form of arthritis that arises from the accumulation of uric acid in the bloodstream. Allopurinol, a medication that reduces uric acid levels, has also been shown to have anti-inflammatory effects. Research in this area seems to have mixed results. Furthermore, limited research has examined the relationship between gout treated with Allopurinol and its possible protective factors against prostate cancer. The purpose of this study was to examine the relationship between Allopurinol use and prostate cancer, controlling for demographic and metabolic factors. Methods Information was collected from the National Health and Nutrition Examination Survey (NHANES) dataset of the Centers for Disease Control and Prevention (CDC). Logistic regression analysis was employed to establish the correlation between the usage of Allopurinol and the occurrence of prostate cancer while considering variables such as weight, hypertension, hyperlipidemia, race, educational level, and marital status. The research received approval from the review board of the Physician's Journal of Medicine. Results We found no significant association between Allopurinol use and prostate cancer, controlling for covariates. Age was found to have a positive association with prostate cancer. Marriage was found to have a negative association with prostate cancer. Conclusion The results of this study did not find a significant association between Allopurinol use and the risk of prostate cancer. However, this study adds to the limited body of research examining the relationship between gout, Allopurinol, and prostate cancer and suggests that further research is needed in this area. Overall, while Allopurinol has been shown to have anti-inflammatory effects and is used to treat gout, its use does not appear to have a significant impact on the risk of developing prostate cancer.

3.
J Clin Med ; 12(6)2023 Mar 10.
Artículo en Inglés | MEDLINE | ID: mdl-36983167

RESUMEN

The reduction in opioid use has become a public health priority. We aimed to assess if performing buccal nerve blocks (BNB) at the time of buccal mucosa graft (BMG) harvest impacts post-operative narcotic usage in the inpatient setting. We retrospectively reviewed clinical characteristics and morphine milligram equivalents (MMEs) received for all patients that underwent a BMG urethroplasty at our institution. The primary outcome measure was post-operative MMEs for patients before and after implementing the BNB. We identified 74 patients that underwent BMG urethroplasty, 37 of which were before the implementation of the BNB and 37 of which were after. No other changes were made to the peri-operative pathway between these time points. The mean total MMEs per day, needed post-operatively, was lower in the BNB group (8.8 vs. 5.0, p = 0.12). A histogram distribution of the two groups, categorized by number of MMEs received, showed no significant differences between the two groups. In this retrospective analysis, we report our experience using BNBs at the time of buccal mucosa graft harvest. While there were no significant differences between the number of MMEs received before and after implementation, further research is needed to assess the blocks' impact on pain scores.

4.
Arthritis Care Res (Hoboken) ; 75(9): 1996-2010, 2023 09.
Artículo en Inglés | MEDLINE | ID: mdl-36752353

RESUMEN

OBJECTIVE: To identify strategies used to recruit and retain underrepresented populations and populations with arthritis or fibromyalgia (FM) into behavioral programs targeting exercise, physical activity, or chronic disease self management. METHODS: Five bibliographic databases were searched for articles published between January 2000 and May 2022. The search focused on strategies and best practices for recruiting and retaining underrepresented populations or populations with arthritis or FM into disease self-management or physical activity/exercise programs. Abstracts and full-text articles were screened for inclusion by 2 independent reviewers, and 2 reviewers extracted data from included articles. RESULTS: Of the 2,800 articles, a total of 43 publications (31 interventions, 8 reviews, 4 qualitative/descriptive studies) met criteria and were included. The majority of studies focused on physical activity/exercise (n = 36) and targeted African American (n = 17), Hispanic (n = 9), or arthritis populations (n = 7). Recruitment strategies that were frequently used included having race- or community-matched team members, flyers and information sessions in areas frequented by the population, targeted emails/mailings, and word of mouth referrals. Retention strategies used included having race- or community-matched team members, incentives, being flexible, and facilitating attendance. Most studies used multiple recruitment and retention strategies. CONCLUSION: This scoping review highlights the importance of a multifaceted recruitment and retention plan for underrepresented populations and populations with arthritis or FM in behavioral intervention programs targeting exercise, physical activity, or chronic disease self management. Additional research is needed to better understand the individual effects of different strategies and the costs associated with the various recruitment/retention methods in underrepresented populations and populations with arthritis.


Asunto(s)
Artritis , Fibromialgia , Humanos , Adulto , Ejercicio Físico , Enfermedad Crónica , Artritis/diagnóstico , Artritis/terapia
5.
Front Nutr ; 9: 932514, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35898708

RESUMEN

Guidelines recommend primary care providers refer children with obesity to behavioral interventions, but given limited program availability, access, and parental engagement, referrals remain rare. We developed telehealth coaching interventions for families whose children received care at a health system in Pennsylvania, United States in 2019-2020. Intervention referrals were facilitated by the pediatrician and/or project team for 6-12-year-old children with obesity following well-child visits. Participants chose one of three 26-week interventions focused on healthy eating, physical activity, or a hybrid clinical/nutrition intervention. Interventions engaged parents as change agents, enhancing self-efficacy to model and reinforce behavior and providing resources to help create a healthy home environment. We enrolled 77 of 183 eligible parent/child dyads. We used mixed methods to evaluate the interventions. Repeated measures models among participants showed significant reductions in obesogenic nutrition behaviors post-intervention and at 1-year follow-up, including a reduction in sugar-sweetened beverage intake of 2.14 servings/week (95% confidence interval: -3.45, -0.82). There were also improvements in obesoprotective nutrition behaviors (e.g., frequency of family meals, parental self-efficacy related to meal management). One year post-baseline, we observed no significant differences in changes in body mass index (BMI) z-scores comparing child participants with matched controls. Given potential impacts of COVID-19 community restrictions on study outcomes, we conducted qualitative interviews with 13 participants during restrictions, which exemplified how disrupted routines constrained children's healthy behaviors but that intervention participation prepared parents by providing cooking and physical activities at home. Findings support the potential of a telehealth-delivered nutrition intervention to support adoption of healthy weight behaviors.

7.
PLoS One ; 17(4): e0267124, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35482741

RESUMEN

BACKGROUND: Thrombocytosis is often an incidental finding in primary care with a range of causes. Despite evidence of a strong association between thrombocytosis and malignancy, guidelines for investigating thrombocytosis in the absence of red flag symptoms remain unclear. A novel automated system of laboratory analysis, intelligent Liver Function Testing (iLFT), launched in Tayside in 2018 and has identified a patient group with thrombocytosis and abnormal liver test (LFT) results. This study analysed the outcome of these patients and investigated the use of thrombocytosis combined with LFTs in predicting risk of cancer. METHODS AND FINDINGS: Between August 2018 and August 2020, 6792 patients underwent iLFT, with 246 found to have both thrombocytosis and at least one abnormal LFT. A random case-matched control group of 492 iLFT patients with normal platelet count and at least one abnormal LFT was created. 7.7% (95% CI 4.7-11.8%) of patients with thrombocytosis had cancer compared to 2.0% (1.0-3.7%) of controls. Patients <40 years or with pre-existing causes of thrombocytosis were then excluded. Subsequent analysis revealed a 10.8% (6.6-16.3%) incidence of cancer in thrombocytosis patients (n = 176) compared to 2.5% (1.2-4.6%, p = 0.00014) in patients with normal platelet count (PLT) (n = 398). When thrombocytosis is combined with elevated alkaline phosphatase (ALP), there is a positive predictive value (PPV) of 20% for cancer. These rules were subsequently applied to a validation cohort of 71,652 patients, of whom 458 had thrombocytosis and elevated ALP. There was a 30.6% cancer incidence, confirming the strong predictive value of the combined test of PLT and ALP. CONCLUSIONS: These findings suggest a substantial increased risk of cancer in patients with thrombocytosis and raised ALP. This could be developed as an adjunct to current investigation algorithms, highlighting high-risk patients and prompting further investigation (such as computed tomography scans) where indicated.


Asunto(s)
Hepatopatías , Neoplasias , Trombocitosis , Humanos , Hepatopatías/complicaciones , Pruebas de Función Hepática , Neoplasias/complicaciones , Neoplasias/epidemiología , Trombocitosis/complicaciones
8.
Urology ; 163: 112-118, 2022 05.
Artículo en Inglés | MEDLINE | ID: mdl-34375651

RESUMEN

OBJECTIVE: To determine if there is an association between self-reported health literacy and rates of prostate cancer screening through PSA testing. METHODS: This secondary data analysis utilized information from the 2016 Behavioral Risk Factor Surveillance System (BRFSS). The primary exposure was self-reported health literacy, and the primary outcome was whether patients underwent prior PSA testing. Males 55-69 years old from 13 states were included in the study and were excluded if they had any missing data. Participants were categorized into low, moderate, or high level of health literacy. Confounders were adjusted for using binary logistic regression. Odds ratios (OR) and 95% confidence intervals (CI) were calculated. RESULTS: A total of 12,149 participants were included. Five percent of participants reported low health literacy, 54% moderate health literacy, and 41% high health literacy. Compared with study participants who self-reported high levels of health literacy, the odds of undergoing PSA testing were 59% lower in those with low health literacy (OR 0.41; 95% CI 0.28-0.64) and 30% lower in those with moderate health literacy (OR 0.70; 95% CI 0.60-0.83). CONCLUSIONS: Our research demonstrates a positive association between self-reported health literacy and the likelihood of PSA screening. While PSA screening can be controversial, health literacy may serve as a window into which patients are more likely to be proactive in their urologic care. Future studies examining how health literacy effects other urologic conditions is necessary.


Asunto(s)
Alfabetización en Salud , Neoplasias de la Próstata , Anciano , Detección Precoz del Cáncer , Humanos , Masculino , Tamizaje Masivo , Persona de Mediana Edad , Antígeno Prostático Específico , Neoplasias de la Próstata/diagnóstico
9.
Urology ; 163: 107-111, 2022 05.
Artículo en Inglés | MEDLINE | ID: mdl-34418408

RESUMEN

Currently, Black men in the United States are greater than 1.5 times as likely to be diagnosed with prostate cancer and more than twice as likely to succumb to the disease. While racial disparities in prostate cancer have been well documented, we must analyze these disparities in the correct context. Discussion of these disparities without correctly describing race as a social construct and acknowledging the impact of structural racism is insufficient. This article reviews the disparities seen in screening, treatment, outcomes, and clinical trial participation. We conclude by outlining future steps to help understand and study disparities, as we strive toward equitable outcomes.


Asunto(s)
Disparidades en Atención de Salud , Neoplasias de la Próstata , Población Negra , Humanos , Masculino , Neoplasias de la Próstata/diagnóstico , Neoplasias de la Próstata/terapia , Estados Unidos/epidemiología
10.
Obes Sci Pract ; 7(5): 629-645, 2021 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-34631140

RESUMEN

INTRODUCTION: Sarcopenic obesity and its association with nonalcoholic fatty liver disease (NAFLD) is under-recognized by many healthcare providers in Western medicine due to the lack of awareness and diagnostic guidelines. The result is delayed recognition and treatment, which leads to further health deterioration and increased healthcare costs. Sarcopenic obesity is characterized by the presence of increased fat mass in combination with muscle catabolism related to chronic inflammation and/or inactivity. Previous research has recommended evaluating body composition and physical function performance to adequately diagnose sarcopenic obesity. Body composition analysis can be performed by imaging applications through magnetic resonance imaging, computed tomography, and dual-energy x-ray absorptiometry. Due to the cost of each device and radiation exposure for patients as evidenced in all three modalities, bioelectrical impedance analysis offers a noninvasive approach capable of providing quick and reliable estimates of lean body and fat mass. METHODS AND RESULTS: This review analyzes the current evidence-based literature, indicating a lower skeletal muscle mass and increased visceral adipose tissue correlation to the advancement of fibrosis in fatty liver disease. CONCLUSION: Given the substantial promising research conducted in predominantly Asian populations regarding body tissue distribution and NAFLD, additional prospective research is needed to extend these findings in Western populations.

11.
CMAJ Open ; 9(2): E693-E702, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34145052

RESUMEN

BACKGROUND: Identification of therapies to prevent severe COVID-19 remains a priority. We sought to determine whether hydroxychloroquine treatment for outpatients with SARS-CoV-2 infection could prevent hospitalization, mechanical ventilation or death. METHODS: This randomized controlled trial was conducted in Alberta during the first wave of the COVID-19 pandemic without direct contact with participants. Community-dwelling individuals with confirmed SARS-CoV-2 infection (by reverse transcription polymerase chain reaction [RT-PCR] viral ribonucleic acid test) within the previous 4 days, and symptom onset within the previous 12 days, were randomly assigned to oral hydroxychloroquine or matching placebo for 5 days. Enrolment began Apr. 15, 2020. The primary outcome was the composite of hospitalization, invasive mechanical ventilation or death within 30 days. Secondary outcomes included symptom duration and disposition at 30 days. Safety outcomes, such as serious adverse events and mortality, were also ascertained. Outcomes were determined by telephone follow-up and administrative data. RESULTS: Among 4919 individuals with a positive RT-PCR test, 148 (10.2% of a planned 1446 patients) were randomly assigned, 111 to hydroxychloroquine and 37 to placebo. Of the 148 participants, 24 (16.2%) did not start the study drug. Four participants in the hydroxychloroquine group met the primary outcome (4 hospitalizations, 0 mechanical ventilation, 4 survived to 30 days) and none in the placebo group. Hydroxychloroquine did not reduce symptom duration (hazard ratio 0.77, 95% confidence interval 0.49-1.21). Recruitment was paused on May 22, 2020, when a since-retracted publication raised concerns about the safety of hydroxychloroquine for hospitalized patients with COVID-19. Although we had not identified concerns in a safety review, enrolment was slower than expected among those eligible for the study, and cases within the community were decreasing. Recruitment goals were deemed to be unattainable and the trial was not resumed, resulting in a study underpowered to assess the effect of treatment with hydroxychloroquine and safety. INTERPRETATION: There was no evidence that hydroxychloroquine reduced symptom duration or prevented severe outcomes among outpatients with proven COVID-19, but the early termination of our study meant that it was underpowered. TRIAL REGISTRATION: ClinicalTrials.gov, no. NCT04329611.


Asunto(s)
Atención Ambulatoria , Tratamiento Farmacológico de COVID-19 , COVID-19 , Hospitalización/estadística & datos numéricos , Hidroxicloroquina , Respiración Artificial/estadística & datos numéricos , Atención Ambulatoria/métodos , Atención Ambulatoria/estadística & datos numéricos , Antivirales/administración & dosificación , Antivirales/efectos adversos , COVID-19/diagnóstico , COVID-19/mortalidad , Terminación Anticipada de los Ensayos Clínicos , Femenino , Humanos , Hidroxicloroquina/administración & dosificación , Hidroxicloroquina/efectos adversos , Vida Independiente/estadística & datos numéricos , Masculino , Persona de Mediana Edad , Mortalidad , Evaluación de Resultado en la Atención de Salud , Servicios Preventivos de Salud/métodos , SARS-CoV-2/aislamiento & purificación , Índice de Severidad de la Enfermedad
12.
Urology ; 148: 190-191, 2021 02.
Artículo en Inglés | MEDLINE | ID: mdl-33549215
13.
Patient Educ Couns ; 104(5): 1193-1199, 2021 05.
Artículo en Inglés | MEDLINE | ID: mdl-33097360

RESUMEN

OBJECTIVE: Low patient recruitment into diabetes prevention programs is a challenge. The primary aim of this study was to demonstrate that an increased recruitment rate can be achieved by communicating personalized risk of progression to type 2 diabetes, estimating risk reduction with weight loss, and offering program choice. Secondary aims included program participation rate, weight loss, and short-term decreased diabetes risk. METHODS: In this single-arm study, persons with prediabetes from 3 primary care sites received a letter that communicated their personalized risk of progression to diabetes within 3-years, estimated risk reduction with 5, 10, 15 % weight loss, reported in pounds, and offered a choice of 5 free, 6-month, programs. A one-sided test was used to compare the recruitment rate against the maximum expected rate of (10 %). RESULTS: Recruitment response rate was 25.3 % (81/328, 95 % CI=[20.0 %, 29.4 %]) which was significantly higher than expected (p < 0.0001). Overall, 65 % of participants completed >75 % of contacts. BMI, HbA1c, and diabetes risk (all p < 0.0001) improved at 6 months; BMI (p < 0.0001) and HbA1c (p < 0.05) improved at 12 months. CONCLUSION: Recruitment response rate was better than expected. PRACTICE IMPLICATIONS: Communicating personalized risk and reduction estimates with a choice of programs resulted in favorable outcomes, sustained at 1-year.


Asunto(s)
Diabetes Mellitus Tipo 2 , Estado Prediabético , Programas de Reducción de Peso , Diabetes Mellitus Tipo 2/prevención & control , Humanos , Estilo de Vida , Estado Prediabético/terapia , Conducta de Reducción del Riesgo , Pérdida de Peso
14.
Urology ; 148: 185-191, 2021 02.
Artículo en Inglés | MEDLINE | ID: mdl-33285213

RESUMEN

OBJECTIVE: To determine if race was associated with 5-year cause-specific survival in patients with clear cell renal cell carcinoma. MATERIALS AND METHODS: Outcomes were investigated using the Surveillance Epidemiology and End Results database with data from 13 states between the years 2007-2015. Covariates included age, sex, insurance, marital status, and tumor stage at diagnosis. Patients <18 years old or with missing data for race, survival time or insurance status were excluded. Cox regression models were used to determine associations through hazard ratios (HR) with 95% confidence intervals (CI) and to adjust for covariates. RESULTS: A total of 8421 subjects were included in the analysis. After adjustment, there was no association between race and 5-year cause-specific survival in patients with ccRCC (Black- HR: 0.96, 95%CI: 0.83,1.12; American Indian/Alaskan- HR: 1.01, 95%CI: 0.75,1.36; Asian Pacific Islander- HR: 0.99, 95%CI: 0.82,1.12). Older individuals and those with regional or distant tumors showed an increased hazard of death, while females and insured patients showed decreased hazard. CONCLUSION: Our study found that race was not associated with 5-year cause-specific survival from clear cell renal cell carcinoma. However inferior overall survival in Blacks with RCC has been well demonstrated in the literature. Our findings suggest that differences in survival may not be driven by cause-specific factors such as renal cell carcinoma, but rather social determinants of health which disproportionality affect Black patients. Further studies with more power that incorporate information on income, comorbidities, education status, and access to care are therefore necessary.


Asunto(s)
Negro o Afroamericano/estadística & datos numéricos , Carcinoma de Células Renales/mortalidad , Neoplasias Renales/mortalidad , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Asiático/estadística & datos numéricos , Femenino , Humanos , Cobertura del Seguro/estadística & datos numéricos , Estimación de Kaplan-Meier , Masculino , Estado Civil/estadística & datos numéricos , Persona de Mediana Edad , Estudios Retrospectivos , Programa de VERF/estadística & datos numéricos , Determinantes Sociales de la Salud/estadística & datos numéricos , Estados Unidos/epidemiología , Población Blanca/estadística & datos numéricos , Adulto Joven
15.
Artículo en Inglés | MEDLINE | ID: mdl-31151321

RESUMEN

Opioid errors are a leading cause of patient harm. Active failures in opioid dose conversion can contribute to error. Conversion is complex and is currently performed manually using tables of approximate equivalence. Apps that offer opioid dose double-checking are available but there are concerns about their accuracy and clinical validation. This study evaluated a novel opioid dose conversion app, The Safer Prescription of Opioids Tool (SPOT), a CE-marked Class I medical device, as a clinician decision support (CDS) platform. This single-centre prospective clinical utility pilot study followed a mixed methods design. Prescribers completed an initial survey exploring their current opioid prescribing practice. Thereafter prescribers used SPOT for opioid dosage conversions in parallel to their usual clinical practice, then evaluated SPOT through a survey and focus group. SPOT matched the Gold Standard result in 258 of 268 (96.3%) calculations. The 10 instances (3.7%) when SPOT did not match were due to a rounding error. Users had a statistically significant increase in confidence in prescribing opioids after using SPOT. Focus group feedback highlighted benefits in Quality Improvement and Safety when using SPOT. SPOT is a safe, reliable and validated CDS that has potential to reduce harms from opioid dosing errors.


Asunto(s)
Analgésicos Opioides/uso terapéutico , Sistemas de Apoyo a Decisiones Clínicas/organización & administración , Cuidados Paliativos/organización & administración , Cuidado Terminal/organización & administración , Analgésicos Opioides/administración & dosificación , Sistemas de Apoyo a Decisiones Clínicas/normas , Relación Dosis-Respuesta a Droga , Humanos , Aplicaciones Móviles , Cuidados Paliativos/normas , Proyectos Piloto , Pautas de la Práctica en Medicina , Estudios Prospectivos , Cuidado Terminal/normas
16.
Diving Hyperb Med ; 48(3): 141-167, 2018 Sep 30.
Artículo en Inglés | MEDLINE | ID: mdl-30199888

RESUMEN

INTRODUCTION: An individual case review of known diving-related deaths that occurred in Australia in 2012 was conducted. METHOD: The case studies were compiled using statements from witnesses and reports of the police and coroners. In each case, the particular circumstances of the accident and details from the post-mortem examination, where available, are provided. RESULTS: There were 26 reported fatalities (four less than the previous year). Only two of the victims were female (one snorkeller and one scuba diver). Fourteen deaths occurred while snorkelling and/or breath-hold diving, 11 while scuba diving and one diver died while using surface supplied breathing apparatus in a commercial pearl diving setting. Two breath-hold divers likely drowned as a result of apnoeic hypoxia. Cardiac-related issues were thought to have contributed to the deaths of at least three and possibly seven snorkellers and four scuba divers. CONCLUSIONS: Pre-existing medical conditions; poor organisation, planning and supervision; equipment-related problems; snorkelling or diving alone or with loose buddy oversight and apnoeic hypoxia were features in several deaths in this series.


Asunto(s)
Causas de Muerte , Buceo , Ahogamiento , Adulto , Anciano , Asfixia/mortalidad , Australia , Mordeduras y Picaduras/mortalidad , Ahogamiento/mortalidad , Femenino , Cardiopatías/mortalidad , Humanos , Masculino , Persona de Mediana Edad
17.
Clin Physiol Funct Imaging ; 37(3): 317-321, 2017 May.
Artículo en Inglés | MEDLINE | ID: mdl-26490540

RESUMEN

Obesity is a steadily growing epidemic affecting all segments of the population including college-aged students. The weight gain that is evidenced amid the transitional stage of college years increases the risks associated with cardiovascular and metabolic diseases. The BodyMetrix® BX-2000 (ULTRA) using a seven-site method has been evaluated against dual-energy X-ray absorptiometry (DXA) for estimation of body composition, which has yielded conflicting results. To date, no studies have compared the three-site method Jackson and Pollock three-site method to DXA. PURPOSE: The purpose of the study was twofold (i) to compare agreement between Jackson-Pollock seven site (JP7), Jackson-Pollock three site (JP3) and Pollock three site (P3) to predict body fat (%BF) using ULTRA and (ii) and to compare the three ULTRA methodologies against DXA. METHODS: Seventy-six healthy college-aged subjects (ages = 22·08 ± 2·50 years) participated in this study. DXA and ULTRA body composition assessments were performed following manufacturer's instructions to estimate %BF. Paired sample t-tests were used to assess agreement between JP7, P3 and JP3. Additionally, a two-tailed sample t-test was performed by sex. ULTRA and DXA results were also performed for agreement and bivariate correlation. RESULTS: No significant differences between JP7 and P3, P = 0·38, were observed. In males, no significant differences were observed between JP7 and P3, P = 0·18. Significant differences were observed in all other pairs, P≤0·001 and between ULTRA and DXA. CONCLUSIONS: The Pollock 3-site method estimates body fat percentage with comparable accuracy to JP7 using ULTRA.


Asunto(s)
Absorciometría de Fotón , Tejido Adiposo/diagnóstico por imagen , Adiposidad , Obesidad/diagnóstico por imagen , Ultrasonografía/instrumentación , Tejido Adiposo/fisiopatología , Adolescente , Adulto , Diseño de Equipo , Femenino , Humanos , Masculino , Obesidad/fisiopatología , Variaciones Dependientes del Observador , Valor Predictivo de las Pruebas , Reproducibilidad de los Resultados , Estudiantes , Aumento de Peso , Adulto Joven
18.
Diving Hyperb Med ; 46(4): 207-240, 2016 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-27966202

RESUMEN

INTRODUCTION: An individual case review of diving-related deaths reported as occurring in Australia in 2011 was conducted as part of the DAN Asia-Pacific dive fatality reporting project. METHOD: The case studies were compiled using reports from witnesses, the police and coroners. In each case, the particular circumstances of the accident and, where available, details from the post-mortem examination are provided. A chain of events analysis was conducted for each case. RESULTS: In total, there were 30 reported fatalities (10 more than in 2010). These included 15 snorkel/breath-hold divers, 14 scuba divers and one diver using surface-supplied breathing apparatus. Twenty-four victims were males. The mean age of snorkelling victims was 49.6 (range 23-75) years and compressed gas divers 42.2 (range 23-55) years. Cardiac-related issues were thought to have been the disabling injury in the deaths of at least seven snorkel divers and five scuba divers. Immersion pulmonary oedema was implicated in at least one death; and three fatalities resulted from attacks by marine animals. Two novices died while under instruction/supervision after separation from their instructor in poor visibility. CONCLUSIONS: Pre-existing medical conditions, separation and inadequate supervision and seafood collection in areas frequented by marine predators were once again features in several deaths in this series.


Asunto(s)
Autopsia , Causas de Muerte , Buceo/estadística & datos numéricos , Adulto , Anciano , Caimanes y Cocodrilos , Animales , Australia/epidemiología , Mordeduras y Picaduras/mortalidad , Contencion de la Respiración , Recolección de Datos/métodos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Resucitación/métodos , Resucitación/normas , Distribución por Sexo , Tiburones , Viaje/estadística & datos numéricos , Adulto Joven
19.
Diving Hyperb Med ; 45(3): 154-75, 2015 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-26415067

RESUMEN

INTRODUCTION: An individual case review was conducted of known diving-related deaths that occurred in Australia in 2010. METHOD: The case studies were compiled using statements from witnesses and reports of the police and coroners. In each case, the particular circumstances of the accident and details from the post-mortem examination, where available, are provided. A root cause analysis was made for each case. RESULTS: There were 20 reported fatalities, one less than the previous year. Five of the victims were female (four scuba divers) and 15 were males. Twelve deaths occurred while snorkelling and/or breath-hold diving, seven while scuba diving (one of whom was using a rebreather), and one diver died while using surface supplied breathing apparatus. At least two breath-hold divers likely drowned as a result of apnoeic hypoxia. Cardiac-related issues were thought to have contributed to the deaths of at least three and possibly five snorkellers, and of at least one, possibly two compressed gas divers. CONCLUSIONS: Snorkelling or diving alone, poor supervision, apnoeic hypoxia, pre-existing medical conditions, lack of recent experience and unfamiliar and/or poorly-functioning equipment were features in several deaths in this series. Reducing delays to CT-scanning and autopsy and coroners' reports documenting that the victim of a drowning was snorkelling or scuba diving at the time are aspects of the investigation of these fatalities that could be improved.


Asunto(s)
Causas de Muerte , Buceo/estadística & datos numéricos , Adulto , Anciano , Australia/epidemiología , Autopsia , Contencion de la Respiración , Ahogamiento/mortalidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Factores de Riesgo , Distribución por Sexo , Adulto Joven
20.
Langmuir ; 30(46): 13987-93, 2014 Nov 25.
Artículo en Inglés | MEDLINE | ID: mdl-25361640

RESUMEN

The kinetics of aggregation of two pyromellitamide gelators, tetrabutyl- (C4) and tetrahexyl-pyromellitamide (C6), in deuterated cyclohexane has been investigated by small angle neutron scattering (SANS) for up to 6 days. The purpose of this study was to improve our understanding of how self-assembled gels are formed. Short-term (< 3 h) time scales revealed multiple phases with the data for the tetrabutylpyromellitamide C4, indicating one-dimensional stacking and aggregation corresponding to a multifiber braided cluster arrangement that is about 35 Å in diameter. The corresponding tetrahexylpyromellitamide C6 data suggest that the C6 also forms one-dimensional stacks but that these aggregate to a thicker multifiber braided cluster that has a diameter of about 62 Å. Over a longer period of time, the radius, persistence length, and contour length all continue to increase in 6 days after cooling. These data suggest that structural changes in self-assembled gels occur over a period exceeding several days and that fairly subtle changes in the structure (e.g., tail-length) can influence the packing of molecules in self-assembled gels on the single-to-few fiber bundle stage.


Asunto(s)
Amidas/química , Benzoatos/química , Modelos Químicos , Difracción de Neutrones , Dispersión del Ángulo Pequeño , Geles
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