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Biomedical subjects

Patricia Davidson

Publications and source records attributed to Patricia Davidson.

At least 19 recordsLinked to original sources
PubMed2006

Magnitude of change in cardiac health-enhancing behaviours 6 months following an acute myocardial infarction.

BACKGROUND: The adoption of health-enhancing behaviours is essential to reduce the likelihood of recurrent coronary events. AIMS: This study assessed the magnitude of health behaviour change 6 months following a first acute myocardial infarction (AMI), and examined differences between cardiac rehabilitation attendees and non-attendees. METHODS: One hundred and six first AMI patients (males n=76, Australian-born n=71) participated in a 6-month follow-up of a descriptive longitudinal survey. Data on non-smoking behaviour, weight normalisation, adequate physical activity, low dietary fat intake, medication adherence and cardiac rehabilitation attendance were collected. The magnitude of change in health-enhancing behaviours from baseline to follow-up was calculated. RESULTS: Whilst there was an overall increase in health-enhancing behaviours at the 6-month follow-up (P<0.001), nonsmoking behaviour, low dietary fat intake and medication adherence were more likely to be achieved than adequate physical activity and weight normalisation. Attendees at cardiac rehabilitation were more likely to report positive lifestyle change (P=0.001) and feeling healthier (P=0.040) than non-attendees. CONCLUSION: The wide variation in the adoption of health-enhancing behaviours at the 6-month follow-up suggested that participants were selective about which behaviours they changed. Cardiac rehabilitation personnel need to emphasise the importance of undertaking all health-enhancing behaviours in order to maximise their multiplicative benefits.

Attitude to Health↗
PubMed2006

Two-dimensional and three-dimensional imaging show ciclesonide has high lung deposition and peripheral distribution: a nonrandomized study in healthy volunteers.

Drug deposition is an important factor that contributes to safety and efficacy outcomes of inhaled steroid therapy. Ciclesonide is a nonhalogenated, inhaled corticosteroid under investigation for the treatment of asthma. Therefore, this study was performed to assess lung deposition of ciclesonide. Technetium-99m (99mTc)-labeled ciclesonide (where the 99mTc-label is physically dissolved in the ciclesonide-hydrofluoroalkane [HFA] solution aerosol) inhaled by healthy volunteers was analyzed by two-dimensional (2-D) and three-dimensional (3-D) imaging to determine lung deposition. Six healthy volunteers inhaled one puff of 40 microg (exactuator, equivalent to 50 microg ex-valve) ciclesonide for 2-D imaging, and two healthy volunteers inhaled 10 puffs of 40 microg ciclesonide for 2-D and 3-D imaging. The ciclesonide aerosol was administered via metered-dose inhaler (MDI) containing HFA-134a as propellant. The ex-actuator mean (+/- standard deviation) deposition of ciclesonide in the lungs was higher (52% +/- 11%) than in the mouth/pharynx (38% +/- 14%). Two-dimensional and 3-D imaging showed that ciclesonide reached all regions of the lung. Mean percent deposition in peripheral regions (47% and 34%) was higher than in lower central regions (17% and 30%), as revealed by 3-D and 2-D imaging, respectively. Inhalation of up to 400 microg of ciclesonide produced no drug-related side effects. In conclusion, ciclesonide administered via metered-dose inhaler using HFA-134a as a propellant provided high lung deposition (>50%), greater distribution throughout peripheral regions of the lungs, and relatively low oropharyngeal deposition.

Administration, Inhalation↗
PubMed2005

Voices from the floor: Nurses' perceptions of the medical emergency team.

Nurses are the main group of clinicians who activate the medical emergency team (MET), placing them in an excellent position to provide valuable insights regarding the effectiveness of this system. This descriptive study aimed to explore nurses' satisfaction with the MET, perceived benefits and suggestions for improvement. The study also sought to examine the characteristics of nurses who were more likely to activate the MET. Using a survey design, descriptive statistics as well as content analysis were used to analyse the data. Seventy-three nurses (79% response rate) returned their completed surveys. A positive and significant relationship was found between years of nursing experience and MET activation (p = 0.018). Overall, nurses were satisfied with the MET, with suggestions for improvement including more education on medical emergencies for both ward and MET staff. Whilst the MET system is meeting the expectations of the majority of ward nurses, there is room for improvement, which includes a more positive attitude of the MET when summoned for 'borderline' cases. Investment in ongoing education of clinicians and interdisciplinary communication is likely to encourage less experienced nurses to utilise this system, whilst decreasing the reticence of some nurses to call the MET.

Attitude of Health Personnel↗
PubMed2005

Issues and challenges in international doctoral education in nursing.

Education is a driving force in improving the health and welfare of communities globally. Doctoral education of nurses has been identified as a critical factor for provision of leadership in practice, scholarship, research, policy and education. Since the genesis of doctoral education in nursing in the USA in the 1930s, this movement has burgeoned to over 273 doctoral programs in over 30 countries globally. The present article seeks to identify the issues and challenges in nursing doctoral education globally, and those encountered by doctoral program graduates in meeting the challenges of contemporary health care systems. Information was derived from a comprehensive literature review. Electronic databases and the Internet, using the Google search engine, were searched using the key words "doctoral education"; "nursing"; "International Network for Doctoral Education in Nursing"; "global health"; "international research collaboration". Doctoral education has been a critical force in developing nurse leaders in education, management, policy and research domains. An absence of consensus in terminology and of accurate minimum data sets precludes comparison and debate across programs. The complexity and dynamism of contemporary globalized communities render significant challenges in the conduct of doctoral programs. Addressing funding issues and faculty shortages are key issues for doctoral programs, especially those in developing countries, to achieve an identity uniquely their own. These challenges can also afford considerable opportunities for discussion, debate and the formulation of innovative and collaborative solutions to advance nursing knowledge and scholarship. In spite of discrete differences between countries and regions, the similarities in the issues facing the development of doctoral programs internationally are more striking than the differences. The harnessing of a global collective to address these issues will likely serve to not only forge the future viability of doctoral education of nurses but to improve the health and well-being of communities. This paper proposes international collaborative strategies to address a number of the challenges identified.

Cooperative Behavior↗
PubMed2005

Activities of home-based heart failure nurse specialists: a modified narrative analysis.

BACKGROUND: Heart failure nurse specialists strive to optimize patients' outcomes in home-based settings. OBJECTIVE: To document the activities of home-based heart failure nurse specialists. METHOD: A modified narrative analysis of clinical notes of home-based heart failure nurse specialists during a 12-month period was used. RESULTS: Data analysis revealed 7 key activities of home-based heart failure nurse specialists: (1) monitoring signs and symptoms and reinforcing patients' self-management: identifying trends and appropriate action; (2) organization, liaison, and consultation with other health professionals to deal with changes in clinical status; (3) clarifying and reinforcing patients' self-care strategies; (4) assisting patients in their desire to avoid institutionalized care; (5) identifying patients' psychosocial issues: dealing with social isolation; (6) providing support: journeying with patients and patients' families; and (7) helping patients and patients' families deal with death and dying. CONCLUSIONS: A major proportion of the activities of home-based heart failure nurse specialists are related to facilitating communication between health professionals and providing information and support to patients and patients' families.

Australia↗
PubMed2004

Australian nurses in general practice based heart failure management: implications for innovative collaborative practice.

BACKGROUND: The growing global burden of heart failure (HF) necessitates the investigation of alternative methods of providing co-ordinated, integrated and client-focused primary care. Currently, the models of nurse-coordinated care demonstrated to be effective in randomized controlled trials are only available to a relative minority of clients and their families with HF. This current gap in service provision could prove fertile ground for the expansion of practice nursing [The Nurse in Family Practice: Practice Nurses and Nurse Practitioners in primary health care. 1988, Scutari Press, London: Impact of rural living on the experience of chronic illness. Australian Journal of Rural Health, 2001. 9: 235-240]. AIM: This paper aims to review the published literature describing the current and potential role of the practice nurse in HF management in Australia. METHODS: Searches of electronic databases, the reference lists of published materials and the internet were conducted using key words including 'Australia', 'practice nurse', 'office nurse', 'nurs*', 'heart failure', 'cardiac' and 'chronic illness'. Inclusion criteria for this review were English language literature; nursing interventions for heart failure (HF) and the role of practice nurses in primary care. RESULTS: There is currently a paucity of data evaluating the potential role for practice nurses in a reconfigured, collaborative health care system. Those studies that were identified were, largely, of a descriptive nature. In addition to identifying the practice nurse as a largely unexplored resource, key themes that emerged from the review include: (1) current general practice services face significant barriers to the implementation of evidence-based HF practice; (2) there is considerable variation in the practice nurse role between general practices; (3) there are significant barriers to the expansion of the practice nurse role; (4) multidisciplinary interventions can effectively deliver secondary prevention strategies; (5) practice nurses can potentially facilitate these multidisciplinary interventions; and (6) practice nurses are favorably perceived by consumers although there is some confusion about the nature of their role. CONCLUSION: On the basis of this literature review, practice nurses represent a potentially useful adjunct to current models of service provision in HF management. Further research needs to comprehensively investigate the role of the practice nurse in the Australian context with a view to developing effective and sustainable frameworks for clinical practice. In particular, high-level evidence is required to evaluate the efficacy of the practice nurse role compared to current disease management strategies.

Attitude of Health Personnel↗
PubMed2004

An insight into Australian nurses' experience of withdrawal/withholding of treatment in the ICU.

BACKGROUND: The success of biotechnology has created moral and ethical dilemmas concerning end-of-life care in the Intensive Care Unit (ICU). Whilst the competent individual has the right to refuse or embrace treatment, ICU patients are rarely able to exercise this right. Thus, decision-making is left to medical professionals and family/significant others. AIM: This study aimed to explore the lived experience of ICU nurses caring for clients having treatment withdrawn or withheld, and increase awareness and understanding of this experience amongst other health professionals. METHODS: Van Manens' (1990) phenomenological framework formed the basis of this study as it provided an in-depth insight into the human experience. A convenience sample of ten ICU Nurses participated in the study. Conversations were transcribed verbatim and analysed using a process of thematic analysis. RESULTS: Five major themes emerged during the analysis. These were: (1) comfort and care, (2) tension and conflict, (3) do no harm, (4) nurse-family relationships and (5) invisibility of grief and suffering. CONCLUSION: The experience of providing care for the adult having treatment withdrawn or withheld in the ICU represents a significant personal and professional struggle. Improvements in communication between health professionals, debriefing and education about the process of withdrawing or withholding treatment would be beneficial to both staff and families and has the potential to improve patient care and reduce burden on nurses.

Australia↗
PubMed2004

Non-valvular atrial fibrillation and stroke: implications for nursing practice and therapeutics.

Atrial fibrillation (AF) is the most common sustained cardiac rhythm disturbance and is increasing in prevalence due to the ageing of the population, and rates of chronic heart failure. Haemodynamic compromise and thromboembolic events are responsible for significant morbidity and mortality in Australian communities. Non-valvular AF is a significant predictor for both a higher incidence of stroke and increased mortality. Stroke affects approximately 40,000 Australians every year and is Australia's third largest killer after cancer and heart disease. The burden of illness associated with AF, the potential to decrease the risk of stroke and other embolic events by thromboprophylaxis and the implications of this strategy for nursing care and patient education, determine AF as a critical element of nursing practice and research. A review of the literature was undertaken of the CINAHL, Medline, EMBASE and Cochrane Databases from 1966 until September 2002 focussing on management of atrial fibrillation to prevent thrombotic events. This review article presents key elements of this literature review and the implications for nursing practice.

Anti-Arrhythmia Agents↗
PubMed2004

Protocol-based approach to suspected appendicitis, incorporating the Alvarado score and outpatient antibiotics.

BACKGROUND: There is evidence that antibiotics can be used as primary treatment for appendicitis, however, delayed surgical treatment might still be associated with perforation. Most patients at risk of perforation have high Alvarado scores. We designed a protocol-based approach to suspected appendicitis, in which the Alvarado score was used to select patients for early treatment with surgery or outpatient antibiotics. METHODS: Patients included in the present study were adults and children referred to the surgical service at John Hunter Hospital (Newcastle, Australia) with suspected appendicitis in the 12 months from July 2000. Treatment groups: no treatment (Alvarado score 1-4); antibiotics alone (Alvarado 5-7); early surgery (Alvarado 8-10). OUTCOME MEASURES: time to operation; duration of hospital stay; non-therapeutic operations; delayed treatment in association with perforation; recurrent appendicitis (for those treated with antibiotics). Comparison group: 142 patients managed with 'best clinical practice' as part of an earlier trial. RESULTS: One hundred and twenty-two patients were enrolled. Median time to operation was 3.9 h (comparison group 7.3 h, P = 0.014). Median length of stay was 38.5 h (comparison group 44.2 h, P = 0.041). There were two cases of delayed treatment in association with perforation (2/122 = 1.6%, comparison group 2/142 = 1.4%, P = 0.88) and 10 non-therapeutic operations (10/122 = 8.1%, comparison group 15/142 = 10.6%, P = 0.51). Of those whose initial illness was treated successfully with antibiotics, 2/42 (4.8%) subsequently required appendicectomy. CONCLUSIONS: This protocol-based approach to suspected appendicitis is feasible. A prospective controlled study would be required to confirm potential benefits (in terms of short hospital stay) and to confirm that there is not an increase in adverse outcomes.

Acute Disease↗
PubMed2003

Traditional Chinese Medicine and heart disease: what does Western medicine and nursing science know about it?

BACKGROUND: Interest in Traditional Chinese Medicine (TCM) is growing rapidly beyond China. This interest is driven by a combination of factors including recognition of potential benefits of TCM; dissatisfaction with the traditional Western medical model; an increasing commitment to holistic care and increasing evidence for the interaction of psychological factors and outcomes of disease and treatment and health consumer demand. AIMS: This review article was prompted by the need to understand and interpret the increasing trend towards the use of TCM in heart disease. In particular, this article defines and describes TCM, and analyses implications and challenges for Western health care delivery models. LITERATURE SEARCH: This article provides a review of accessible evidence, to English speaking health care professionals. The CINAHL, MEDLINE, HealthSTAR, Academic ASAP and Cochrane databases were searched, identifying literature published from 1982. Search engines on the Internet were also used. Examples of keywords used were "Traditional Chinese Medicine" and "heart". CONCLUSION: Difficulties in accessing information regarding TCM have implications for health education in coronary heart disease and patient safety. The rapid uptake of TCM in both Western and Chinese societies mandates an understanding of the principles and potential interactions when TCM is complemented with Western medical treatment for heart disease. Development of this knowledge and understanding is essential in order to provide safe and effective health care to patients who use combination therapies.

Acupuncture Therapy↗
PubMed2003

Cardiorespiratory nurses' perceptions of palliative care in nonmalignant disease: data for the development of clinical practice.

Nurses lack a comprehensive body of scientific knowledge to guide the palliative care of patients with nonmalignant conditions. Current knowledge and practice reveal that nurses in many instances are not well prepared to deal with death and dying. Focus groups were used in an exploratory study to examine the perceptions of palliative care among cardiorespiratory nurses (n = 35). Content analysis was used to reveal themes in the data. Four major themes were found: (1) searching for structure and meaning in the dying experience of patients with chronic disease, (2) lack of a treatment plan and a lack of planning and negotiation, (3) discomfort in dealing with death and dying, and (4) lack of awareness of palliative care philosophies and resources. The information derived from this sample of cardiorespiratory nurses represents a complex interplay between personal, professional, and organizational perspectives on the role of palliative care in cardiorespiratory disease. The results of the study suggest a need for nurses to be equipped on both an intellectual and a practical level about the concept of palliative care in nonmalignant disease.

Chronic Disease↗
PubMed2002

Malignant mesothelioma in Australia, 1945-2000.

BACKGROUND: Australia has maintained a total national malignant mesothelioma case register since 1980. There has been a marked increase in the incidence of mesothelioma in the last 20 years. Currently 450-600 cases are notified annually in a population of 20 million. While the history of the Wittenoom (Western Australia) crocidolite mine and its aftermath is well known, these cases comprise only 5% of the total. This study describes the incidence of mesothelioma in Australia from 1945 to 2000. METHODS: Using register data, time trends in mesothelioma incidence were calculated. Analyses of incidence are reported by age, sex, anatomical site, and state of notification. Associations with occupational and environmental asbestos exposure histories are described. Lung fiber content measurements were made on a subset of cases. RESULTS: Australia has had 6,329 cases of mesothelioma from 1 January 1945 to 31 December 2000. (A further 620 cases were notified in the period from 1 January 2001 to 31 October 2001.) Annual incidence rates for Australia per million population > or = 20 years (1997) were: male, 59.8; female, 10.9; total, 35.4. Incidence rates have been continually increasing and are the highest reported national rates in the world. While Western Australia has the highest rate (1997 total rate, 52.8), most cases arise from the two most populous eastern states, New South Wales and Victoria. In 88% (male 90%, female 61%) of cases, a history of asbestos exposure was obtained. Exposures occurred in a wide variety of occupational and environmental circumstances. In 80% of cases with no history of exposure, TEM lung asbestos fiber counts > 200,000 fibers > 2 microm length per gm dry lung were obtained, suggesting unrecognized exposure. CONCLUSIONS: Australia's high incidence of mesothelioma is related to high past asbestos use, of all fiber types, in a wide variety of occupational and environmental settings. The number of cases in total is expected to be about 18,000 by 2020, with about 11,000 yet to appear.

Adult↗
PubMed2002

Cultural aspects of adjustment to coronary heart disease in Chinese-Australians: a review of the literature.

BACKGROUND: The burden of illness associated with Coronary Heart Disease (CHD) has determined this as a key focus for research at a basic science, individual and population level. Although considerable research has been conducted on specific aspects of the experience of CHD, such as anxiety or depression, there is a lack of research investigating the global aspects of the illness experience from the individual's perspective. Furthermore, there is a paucity of research examining the cross-cultural experiences of patients from Non-English Speaking Backgrounds (NESB). Given the multicultural nature of Australian society, and that health and illness are culturally constructed experiences (Manderson 1990), it is important to include the perspectives of people from minority cultures in health related research in order to provide culturally sensitive and appropriate health care and information during an illness. Further, the potential to prevent and modulate the course of CHD, by strategies such as smoking cessation and lipid management, mandate a health promotion agenda based on equity and access for all members of society. AIMS: This article discusses cultural aspects of CHD in relation to nursing and allied health care during the recovery phase of an acute cardiac event. It reviews the research that has been conducted in this area, focusing on the Chinese-Australian population. LITERATURE SEARCH: The CINAHL, MEDLINE, FAMILY (Australian Family and Society Abstracts Database), PsychINFO, and Multicultural Australian and immigration Studies (MAIS) databases were searched, identifying literature published from 1982. Keywords used were Chin* (Chinese, China), Asia* (Asia, Asian), experience, adjustment, psychological, heart, coronary, cardiac, health and services. Reports not written in English were excluded. Australian Government reports were also searched, as well as hand searching of nursing and medical textbooks. These searches resulted in over 1000 articles. However, only around 50 were relevant for this review. IMPLICATIONS: Chinese-Australians are one of the fastest growing populations in Australia, and are at increased risk of CHD upon settling to Australia. Recommendations for future research and for the practice of nursing are provided.

Adaptation, Psychological↗
PubMed2002

Primary health care: a framework for policy development.

Primary health care has utility for policy development at all levels of organization in any nation, including policies influencing the health of persons living with severe and persistent mental illnesses. Using the primary health care framework, policies to improve health and housing for this population evolve from intersectoral collaboration. Active participation by those persons whose essential health is compromised by housing that is not acceptable, adequate, suitable, and affordable is required. Appropriate and affordable methods that address health challenges are identified. Access to services meeting essential health care needs of citizens has potential for healthy outcomes.

Canada↗
PubMed2002

Barriers to participation in and adherence to cardiac rehabilitation programs: a critical literature review.

Despite the documented evidence of the benefits of cardiac rehabilitation (CR) in enhancing recovery and reducing mortality following a myocardial infarction, only about one third of patients participate in such programs. Adherence to these programs is an even bigger problem, with only about one third maintaining attendance in these programs after 6 months. This review summarizes research that has investigated barriers to participation and adherence to CR programs. Some consistent factors found to be associated with participation in CR programs include lack of referral by physicians, associated illness, specific cardiac diagnoses, reimbursement, self-efficacy, perceived benefits of CR, distance and transportation, self-concept, self-motivation, family composition, social support, self-esteem, and occupation. Factors associated with non-adherence include being older, female gender, having fewer years of formal education, perceiving the benefits of CR, having angina, and being less physically active during leisure time. However, many of the studies have methodologic flaws, with very few controlled, randomized studies, making the findings tentative. Problems in objectively measuring adherence to unstructured, non-hospital-based programs, which are an increasingly popular alternative to traditional programs, are discussed. Suggestions for reducing barriers to participation and adherence to CR programs, as well as for future research aimed at clearly identifying these barriers, are discussed.

Diet↗
PubMedDate not supplied

Heart rate as a predictor of posttraumatic stress disorder in children.

OBJECTIVE: This study indexed the relationship between resting heart rates (HRs) after injury and subsequent posttraumatic stress disorder (PTSD) in children. METHOD: Children aged between 7 and 12 years who were hospitalized after traumatic injury (n=76) had their resting HR assessed after injury and were assessed for PTSD 6 months after injury (n=62). RESULTS: Full/subsyndromal PTSD was diagnosed in 27% of children. Children with full/subsyndromal PTSD had higher HRs after trauma than those without PTSD. Children with an elevated HR were more likely to develop PTSD after controlling for age, sex and injury severity (adjusted odds ratio=5.89). CONCLUSIONS: These findings accord with the proposal that fear conditioning shortly after trauma contributes to PTSD in children.

Child↗
PubMedDate not supplied

Development of a program logic model to measure the processes and outcomes of a nurse-managed community health clinic.

Evaluation is an essential process that permits assessing the effectiveness and efficiency of planned programs. In implementing a new nurse-managed Community Health Clinic targeting services for the homeless and underserved, the stakeholders considered an evaluation process integral to the planning stage of the clinic as a whole as well as of all the different programs being offered. The program logic model was chosen and modified to guide evaluation. Work to develop the evaluation model and its components began before the clinic opened. This article describes the development of the modified program logic model, how it was modified, and the rationale for its modifications. We highlight the process of developing the evaluation model because we found limited descriptions of the process in the literature. The evaluation process itself will be evaluated on an ongoing basis to determine if it is capturing the evaluation needs of the clinic project accurately.

Community Health Services↗