Patterns of use of oral health care services in Australian rural adults: the Crossroads-II Dental sub-study.

BACKGROUND: As part of a larger study, the Crossroads-II Dental sub-study determined the patterns of, and barriers to, oral health care service utilization in a rural area of Victoria. METHODS: In this cross-sectional sub-study predisposing, enabling, needs-related, and oral health variables were considered in association with patterns of oral health care utilization. A logistic regression was performed to explain the use of oral health care services. RESULTS: Overall, 574 adults participated, with 50.9% reporting having visited an oral health care service in the previous 12 months. Age, number of chronic health conditions and holding a health card; were associated with increased visit to a dentist (OR = 1.01; 95% CI: 1.00-1.03; OR = 1.08; 95% CI: 1.01-1.16; OR = 2.06; 95% CI: 1.26-3.36, respectively). Perceived barriers to care and number of missing teeth decreased the odds of using services (OR = 0.46; 95% CI: 0.36-0.58; OR = 0.95; 95% CI: 0.92-0.98, respectively). CONCLUSIONS: Results suggest that use of oral health care services is associated with a range of financial, educational, health and structural barriers. Increasing the use of oral health care services in rural populations requires additional efforts beyond the reduction of financial barriers.

Rural chronic disease research patterns in the United Kingdom, United States, Canada, Australia and New Zealand: a systematic integrative review.

BACKGROUND: People living in rural and remote communities commonly experience significant health disadvantages. Geographical barriers and reduced specialist and generalist services impact access to care when compared with metropolitan context. Innovative models of care have been developed for people living with chronic diseases in rural areas with the goal of overcoming these inequities. The aim of this paper was to describe the characteristics and outcomes of studies investigating innovative models of care for people living with chronic disease in rural areas of developed countries where a metropolitan comparator was included. METHODS: An integrative systematic review was undertaken. Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) method was used to understand the empirical and theoretical data on clinical outcomes for people living with chronic disease in rural compared with metropolitan contexts and their models of care in Australia, New Zealand, United States, Canada and the United Kingdom. RESULTS: Literature searching revealed 620 articles published in English between 1st January 2000 and 31st March 2019. One hundred sixty were included in the review including 68 from the United States, 59 from Australia and New Zealand (5), 21 from Canada and 11 from the United Kingdom and Ireland. 53% (84) focused on cardiovascular disease; 27% (43) diabetes mellitus; 8% (12) chronic obstructive pulmonary disease; and 13% (27) chronic kidney disease. Mortality was only reported in 10% (16) of studies and only 18% (29) reported data on Indigenous populations. CONCLUSIONS: This integrated review reveals that the published literature on common chronic health issues pertaining to rural and remote populations is largely descriptive. Only a small number of publications focus on mortality and comparative health outcomes from health care models in both urban and non-urban populations. Innovative service models and telehealth are together well represented in the published literature but data on health outcomes is relatively sparse. There is significant scope for further directly comparative studies detailing the effect of service delivery models on the health outcomes of urban and rural populations. We believe that such data would further knowledge in this field and help to break the deadly synergy between increased rurality and poorer outcomes for people with chronic disease.

Is social exposure to obesity associated with weight status misperception? Assessing Australians ability to identify overweight and obesity.

INTRODUCTION: Overweight and obesity prevalence has increased significantly over the past two decades, currently impacting greater than 60% of Australians. It is unclear if a social perception of a healthy weight has been obscured by the increase in prevalence and thus has become inconsistent with the medical definitions. METHODS: An electronic questionnaire was distributed via email and social media using the authors' informal networks. Australian adults were eligible to participate. Participants were asked to categorise their own body size using medically accepted words and previously published silhouettes, before identifying underweight, healthy weight, overweight or obesity in a series ofsilhouettes. RESULTS: Eight hundred six questionnaires were completed, a majority of participants had attained a high level of education and were employed female health professionals. Under half the studied population had a Body Mass Index (BMI) corresponding to overweight or obese categories (n = 349, 47%). Accuracy in self-perceived weight status using medicalised words was higher among respondents with BMI corresponding to the healthy weight category (n = 311, 85%) and overweight category (n = 133, 74%) than for respondents with BMI corresponding to obesity (n = 79, 45%) or underweight (n = 5, 31%). A majority of respondents were able to accurately self-perceive their weight status using silhouettes (n = 469, 70%). Females were significantly more likely to be accurate in their self-perception than males, using both medicalised words (p = < 0.001) and silhouettes (p = 0.045). Respondents with a BMI corresponding to the obese category were significantly more likely to be accurate with weight status self-perception using silhouettes than words (87% versus 46% respectively, p = < 0.001). Less than half (41%) of respondents accurately perceived silhouettes corresponding to an overweight BMI and less than one in ten respondents (9%) accurately perceived the lower limit of the silhouettes corresponding to an obese BMI. CONCLUSIONS: Repondents were challenged to accurately perceive silhouettes corresponding to an obese BMI in themselves and others. Weight status misperception was more likely to exist among those with a BMI less than 18.5 or 30 or more (underweight BMI and obese BMI). Accuracy decreased as BMI increased. Respondents with a BMI in the obese category were significantly more likely to accurately self-perceive their weight status using silhouettes than medicalised words. Silhouettes may act as an effective visual cue in initiating weight related discussions.

Why Australia needs to define obesity as a chronic condition.

BACKGROUND: In Australia people with a diagnosed chronic condition can be managed on unique funded care plans that allow the recruitment of a multidisciplinary team to assist in setting treatment goals and adequate follow up. In contrast to the World Health Organisation, the North American and European Medical Associations, the Australian Medical Association does not recognise obesity as a chronic condition, therefore excluding a diagnosis of obesity from qualifying for a structured and funded treatment plan. BODY: The Australian guidelines for management of Obesity in adults in Primary Care are structured around a five step process -the '5As': Ask & Assess, Advise, Assist and Arrange'. This article aims to identify the key challenges and successes associated with the '5As' approach, to better understand the reasons for the gap between the high Australian prevalence of overweight and obesity and an actual diagnosis and treatment plan for managing obesity. It argues that until the Australian health system follows the international lead and defines obesity as a chronic condition, the capacity for Australian doctors to diagnose and initiate structured treatment plans will remain limited and ineffective. CONCLUSION: Australian General Practitioners are limited in their ability manage obesity, as the current treatment guidelines only recognise obesity as a risk factor rather than a chronic condition.

A comprehensive ovine model of blood transfusion.

BACKGROUND: The growing awareness of transfusion-associated morbidity and mortality necessitates investigations into the underlying mechanisms. Small animals have been the dominant transfusion model but have associated limitations. This study aimed to develop a comprehensive large animal (ovine) model of transfusion encompassing: blood collection, processing and storage, compatibility testing right through to post-transfusion outcomes. MATERIALS AND METHODS: Two units of blood were collected from each of 12 adult male Merino sheep and processed into 24 ovine-packed red blood cell (PRBC) units. Baseline haematological parameters of ovine blood and PRBC cells were analysed. Biochemical changes in ovine PRBCs were characterized during the 42-day storage period. Immunological compatibility of the blood was confirmed with sera from potential recipient sheep, using a saline and albumin agglutination cross-match. Following confirmation of compatibility, each recipient sheep (n = 12) was transfused with two units of ovine PRBC. RESULTS: Procedures for collecting, processing, cross-matching and transfusing ovine blood were established. Although ovine red blood cells are smaller and higher in number, their mean cell haemoglobin concentration is similar to human red blood cells. Ovine PRBC showed improved storage properties in saline-adenine-glucose-mannitol (SAG-M) compared with previous human PRBC studies. Seventy-six compatibility tests were performed and 17·1% were incompatible. Only cross-match compatible ovine PRBC were transfused and no adverse reactions were observed. CONCLUSION: These findings demonstrate the utility of the ovine model for future blood transfusion studies and highlight the importance of compatibility testing in animal models involving homologous transfusions.

Monitoring intestinal ischaemia.

OBJECTIVE: To review the clinical and experimental methods of detecting intestinal ischaemia and to assess their value in current clinical practice. DATA SOURCES: Relevant articles and published reviews on intestinal ischaemia and/or infarction. SUMMARY OF REVIEW: The incidence of acute mesenteric ischaemia has increased substantially over the last few decades. Death rates of 70% to 90% have been reported for this condition. Improved management depends upon prompt diagnosis and early aggressive management. Despite mounting evidence that ischaemic intestinal injury may be frequent and may be a cause of multi-organ failure, accurate monitor-ing of the intestinal circulation in critically ill patients continues to be a distant goal. The need for a reliable, specific test of intestinal ischaemia has been recognised for many years. Numerous potential monitors have been evaluated including intraluminal pCO2, abdominal CT, abdominal MRI and specific plasma enzymes, but few have shown potential to be clinically useful. At present no specific test for intestinal ischaemia and/or infarction is in routine clinical use. Development of a specific test to monitor for intestinal injury would be of great clinical value. Further work will inevitably lead to the development of useful markers. CONCLUSIONS: Accurate detection of intestinal ischaemia in the critically ill patient is often difficult. While numerous tests have been examined to diagnose and monitor intestinal ischaemia and/or infarction most exhibit an unacceptably low specificity and sensitivity.

Circulating secretory phospholipase A2 in critical illness--the importance of the intestine.

OBJECTIVE: To review the role of secretory phospholipase A2 in the pathogenesis of multiple organ failure in the critically ill patient. DATA SOURCES: Relevant articles and published reviews on secretory phospholipase A2 in critical illness. SUMMARY OF REVIEW: Secretory phospholipase A2 (sPLA2) has an important role in inflammation and in antimicrobial defence. However, excessive activity of sPLA2 has been shown to result in tissue damage and has been implicated as a mediator of organ failure associated with critical illness. Gastrointestinal release of secretory phospholipase A2 from Paneth cells increases during intestinal ischaemia and may be an important factor in the pathogenesis of the multiple organ dysfunction syndrome. In experimental models, specific PLA2 inhibitors reduce organ failure associated with sPLA infusion and may play an important role in reducing organ failure in the management of the critically ill patient. CONCLUSIONS: Intestinal ischaemia may play an important role in the pathogenesis of the multiple organ dysfunction syndrome in the critically ill patient. In patients with sepsis, specific PLA2 inhibitors have the potential to reduce organ failure and improve morbidity and mortality.