Thesis (PhD)--University of South Australia, 2001

Thesis (MGeront)--University of South Australia, 1998

Problem investigated: The activation and implementation of the Medical Emergency Team (MET) system. Procedures followed: The ability of the objective activation criteria to accurately identify patients at risk of three serious adverse events (cardiac arrest, unexpected death and unplanned intensive care admission) was assessed using a nested, matched case-control study. Sensitivity, specificity and Receiver Operating Characteristic curve (ROC) analyses were performed. The MET implementation process was studied using two convenience sample surveys of the nursing staff from the general wards of twelve intervention hospitals. These surveys measured the awareness and understanding of the MET system, level of attendance at MET education sessions, knowledge of the activation criteria, level of intention to call the MET and overall attitude to the MET system, and the hospital level of support for change, hospital capability and hospital culture. The association of these measures with the intention to call the MET and the level of MET utilisation was assessed using nonparametric correlation. Results obtained: The respiratory rate was missing in 20% of subjects. Using listwise deletion, the set of objective activation criteria investigated predicted an adverse event within 24 hours with a sensitivity of 55.4% (50.6-60.0%) and specificity of 93.7% (91.2-95.6%). An analysis approach that assumed the missing values would not have resulted in MET activation provided a sensitivity of 50.4% (45.7- 55.2%) and specificity of 93.3% (90.8-95.3%). Alternative models with modified cut-off values provided different results. The MET system was implemented with variable success during the MERIT study. Knowledge and understanding of the system, hospital readiness, and a positive attitude were all significantly positively associated with MET system utilisation, while defensive hospital cultures were negatively associated with the level of MET system utilisation. Major conclusions: The objective activation criteria studied have acceptable accuracy, but modification of the criteria may be considered. A satisfactory trade-off between the identification of patients at risk and workload requirements may be difficult to achieve. Measures of effectiveness of the implementation process may be associated with the level of MET system utilisation. Trials of the MET system should ensure good knowledge and understanding of the system, particularly amongst nursing staff.

Problem investigated: The activation and implementation of the Medical Emergency Team (MET) system. Procedures followed: The ability of the objective activation criteria to accurately identify patients at risk of three serious adverse events (cardiac arrest, unexpected death and unplanned intensive care admission) was assessed using a nested, matched case-control study. Sensitivity, specificity and Receiver Operating Characteristic curve (ROC) analyses were performed. The MET implementation process was studied using two convenience sample surveys of the nursing staff from the general wards of twelve intervention hospitals. These surveys measured the awareness and understanding of the MET system, level of attendance at MET education sessions, knowledge of the activation criteria, level of intention to call the MET and overall attitude to the MET system, and the hospital level of support for change, hospital capability and hospital culture. The association of these measures with the intention to call the MET and the level of MET utilisation was assessed using nonparametric correlation. Results obtained: The respiratory rate was missing in 20% of subjects. Using listwise deletion, the set of objective activation criteria investigated predicted an adverse event within 24 hours with a sensitivity of 55.4% (50.6-60.0%) and specificity of 93.7% (91.2-95.6%). An analysis approach that assumed the missing values would not have resulted in MET activation provided a sensitivity of 50.4% (45.7- 55.2%) and specificity of 93.3% (90.8-95.3%). Alternative models with modified cut-off values provided different results. The MET system was implemented with variable success during the MERIT study. Knowledge and understanding of the system, hospital readiness, and a positive attitude were all significantly positively associated with MET system utilisation, while defensive hospital cultures were negatively associated with the level of MET system utilisation. Major conclusions: The objective activation criteria studied have acceptable accuracy, but modification of the criteria may be considered. A satisfactory trade-off between the identification of patients at risk and workload requirements may be difficult to achieve. Measures of effectiveness of the implementation process may be associated with the level of MET system utilisation. Trials of the MET system should ensure good knowledge and understanding of the system, particularly amongst nursing staff.

This study explores how formal and informal social networks and decision making about resources in the hospital setting are related. Over the last few years, tensions between new public management of hospitals and increased demands has led to an increase in bottlenecks, stagnation of patient flow, and overcrowded emergency departments. These problems have led to an increase in access block for patients attempting to access the public hospital system. The introduction of Patient Flow Units has instigated the formalisation of a nurse manager function to coordinate patient flow. Nurses in such a pivotal position and who greatly influence hospital operations, tend to have special characteristics and use these to “get things done”. This thesis investigates interpersonal associations between professional (e.g. doctors and nurses) and functional groups (e.g. clinicians and managers), when making clinical and operational decisions when transferring a patient from the emergency department to a ward bed. By employing a mixed methodology, this thesis first sought to establish a snapshot of organisational culture in three hospitals. Drawing on Degeling et al. (1998) and Fitzgerald (2002), an organisational cultural survey was distributed to a total of 1750 participants. The response rate was 11.65% This survey particularly addressed five cultural constructs including a sense of organisational commitment, perceptions of managerial role characteristics, perceptions of currently pursued organisational goals, perceptions of orientation to work values when choosing a job, and interactions with various professional constituencies. In addition, 18 interviews were conducted and a total of 150 hours of observation of work processes, interactions between staff and environmental conditions were studied. This investigation largely confirmed earlier studies by Degeling (2002) and Fitzgerald (2002) that professional groups believed that their organisation primarily exhibited an Elite style of management, that financial viability is the most important goal their organisation is pursuing, and staff welfare was a low priority. In addition, it found significant differences in cultural footprints between the small hospital, which had a more integrated culture, and the large hospital, which was more fragmented in nature. However, the major contribution of this investigation is demonstrated in the qualitative chapter. This thesis found that the role of “who matters the most” in relation to decision making about patient flow, changes depending on the stage of the decision making process. It also found that non-managerial nursing staff with no formal power or legitimacy could affect urgency. The thesis comprises eight chapters. Following the introductory chapter, Chapter 2 considers the literature associated with the public health system in Australia with a focus on public hospitals in NSW. Chapter 3 critically examines the literature describing organisational culture, with an emphasis on subcultures. Chapter 4 contains a review of professional identity and roles, networks and alliances, social capital, deep smarts, and stakeholder theory. Description and justification of the research method selected to explore the thesis proposition follows in Chapter 5. Chapter 6 contains an outline of the findings concerning the analysis of the survey questionnaire to determine a cultural footprint of the three hospitals studied. Chapter 7 considers the different roles of professional groups (doctors, nurses, and others) and functional groups (clinicians and managers) in the operational phase of patient flow and in doing so contributes to knowledge. Finally, in Chapter 8, a discussion summarises the thesis findings, describes the implications, acknowledges limitations of the study and identifies avenues for future research. / Doctor of Philosophy (PhD)

Thesis (M.A.)--University of Toronto, 2006. / Source: Masters Abstracts International, Volume: 44-06, page: 2521. Includes bibliographical references (leaves 85-88).

Thesis (Ph.D.) -- University of Western Sydney, 2001. / "A thesis submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy, University of Western Sydney" Bibliography : leaves 193-208.

Thesis (Ph. D.)--University of Sydney, 2006. / Title from title screen (viewed 16 May 2007). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the School of Physiotherapy, Faculty of Health Sciences. Includes bibliographical references. Also available in print form.

Thesis (Ph.D.)--Edith Cowan University, 2006. / Submitted to the Faculty of Computing, Health and Science. Includes bibliographical references.

Thesis (M.A.)--University of Oregon, 2008. / Typescript. Includes vita and abstract. Includes bibliographical references (leaves 88-91). Also available online.