M.Cur. (Intensive Care Nursing) / The problem of intensive care nurses leaving the profession due to non-conducive working environments and uncompetitive conditions of employment is becoming more alarming and is therefore as relevant as ever. The researcher is concerned about the quality of nurse-awareness nurses create in order to practice quality nurse care. Confusion among nurses about their professional rights and responsibilities adds fuel to the fire. The management of health care services is at times not sensitive to the needs of nurses, and nurses are not always recognized for their inherent professional worth. In the adult intensive care unit at which the researcher practices as unit manager she perceived her colleagues to be experiencing some sort of emotional and spiritual discomfort in going about their daily activities. As the researcher felt responsible for the well-being of the staff in the unit she decided to investigate the phenomenon via a formal research study. The objectives of the study were two-fold: Firstly to explore and describe the registered nurse's experience of nursing in the intensive care unit and then to use the information obtained to describe guidelines for the compilation of a support programme for the nurses nursing in the unit The research questions that were generated are: How do registered nurses in the intensive care unit experience nursing there and how can the information be utilized to describe guidelines to support these nurses? The researcher used an exploratory, descriptive, contextual and phenomenological qualitative design to answer these research questions. Phenomenological interviews were conducted with five interviewees who had been possessively selected.

Mechanical ventilation (MV) is one of the most frequently used treatment modalities in the intensive care unit (ICU) (Burns, 2005:14). Up to 90% of critically ill patients in ICUs globally are connected to a mechanical ventilator. Although mechanical ventilation is a lifesaving intervention, it is expensive and is associated with diverse complications (Mclean, Jensen, Schroeder, Gibney & Skjodt, 2006: 299). Ventilator-associated pneumonia (VAP) accounts for 25% of all infections in ICU, with global crude mortality figures estimated at 20-70% (Craven, 2006:251). Minimising the time that a patient is connected to a mechanical ventilator to the absolute minimum can have considerable benefits in terms of decreased mortality and morbidity, as well as a decreased length of ICU stay and lower hospital costs. Critically ill patients therefore need to be weaned from the mechanical ventilator as soon as their condition that warranted the need for mechanical ventilation is stabilized. The process of weaning the critically ill patient from mechanical ventilation constitutes a significant proportion of total ventilator time. As professional nurses attend to the mechanically ventilated patient 24 hours a day, they have a vital role to play in the collaborative management of the patient requiring weaning from mechanical ventilation. The objectives of this study were to explore and describe the professional nurses’ knowledge regarding weaning the critically ill patient from mechanical ventilation. Based on the results, recommendations in the form of a protocol were made in order to improve the professional nurses’ knowledge and enhance the care of the mechanically ventilated patient. A quantitative design, which was exploratory, descriptive and contextual in nature, was utilised for the study. The data collection instrument of choice was a self-administered questionnaire. Convenience, non-probability sampling was the sampling method chosen for the purpose of this study. Collected data were analysed with the assistance of a statistician using descriptive and inferential statistics. Results were displayed in the form of graphs and tables. The results obtained in the study, combined with data from the literature review, were used to develop recommendations to enhance vi professional nurses’ knowledge regarding weaning the critically ill patient from mechanical ventilation. The recommendations were presented in the form of a protocol based on the available evidence. Ethical principles as they relate to conducting research were adhered to throughout the study.

Background: Spinal Cord Injuries (SCIs) are traumatic, life-changing injuries that can affect every aspect of an individual's life and can lead to death if not treated timeously and appropriately. Respiratory complications occur frequently after the SCI and are the leading cause of mortality and morbidity. Respiratory complications are predictable based on the neurological level of impairment of the spinal cord lesion; the higher the neurological injury, the more severe the respiratory complication. Changes in pulmonary function, poor cough, hypersecretion, immobility and bronchospasm all contribute to the development of respiratory complications. If the patient is unable to protect his/her airway or if respiratory failure occurs, mechanical ventilation is often required. Many patients require prolonged ventilation and subsequently need to go for tracheostomies. The critical care nurse plays an important role in the early identification of complications and can, therefore, act to limit and prevent these complications, which may be a direct result from the injury or treatment modality such as mechanical ventilation. Respiratory management has been promoted in preventing and treating respiratory complications and is associated with better prognosis in the SCI patient. Design and method: The research study aims to explore and describe existing literature and to make recommendations for the respiratory management of a mechanically ventilated spinal cord injured patient in a critical care unit (CCU). A systematic review was undertaken with clear inclusion and exclusion criteria. Ethical principles were maintained throughout the study. The quality of the study was ensured by critically appraising data that was utilized in the systematic review. It is envisaged that the results from this systematic review will improve the respiratory management of the SCI patient and prevent any variations in practice. Results: Were presented under the following themes: priorities of care for the SCI patient in the acute phase, during the critical care phase and preventative care. Conclusion: The SCI patient regardless of the neurological level or completeness of injury should be admitted to the CCU for intensive ventilatory, cardiopulmonary support and hemodynamic monitoring in order to detect and prevent respiratory complications. The use of larger tidal volumes is associated with improved comfort and less dyspnea however if a patient has acute lung injury or ARDS the use of low tidal volumes 6ml/kg is recommended. Prevention and early identification of respiratory complications is associated with improved outcomes for the SCI patient.

The objectives of this thesis are : 1) To provide a review of the literature on the significance, pathogenesis, diagnosis and management of secondary infections in the Intensive Care Unit. 2) To present the findings of a study of the technique of selective parenteral and enteral antisepsis regimen (SPEAR) in the patient population of the Respiratory ICU at Groote Schuur Hospital, aimed at reducing the incidence of secondary infection and, further to evaluate the study in terms of the effect of SPEAR on the incidence of secondary infection and its influence on the mortality due to secondary infection. 3) To present the findings of the effect of SPEAR on patient bacterial colonisation in the ICU, and to evaluate its longterm influence on the microbial flora of the ICU.

Introduction: Traumatic Brain Injury (TBI) remains a significant public health burden in the United States. Persons afflicted with more severe TBIs are usually admitted to an ICU, where they are at risk for a number of complications throughout their hospitalization. Recent literature has attempted to describe such complications from a cardiovascular perspective as part of a “cardio-cerebral syndrome.” We described the frequency of cardiac complications in the ICU among patients with a TBI and compared patients with and without measured cardiac dysfunction. We investigated the potential impact of cardiac dysfunction on in-hospital mortality. Methods: This was a retrospective review of a prospective cohort study in adult ICU patients with moderate-to-severe TBI (GCS≤12). We measured cardiac dysfunction using initial EKG echocardiography findings and peak serum troponin levels during hospitalization. Primary outcome was in-hospital mortality for patients with and without cardiac dysfunction using multivariable adjusted Cox Proportional Hazards Regression. Secondary outcomes examined the relationship between severity of brain injury and degree of cardiac dysfunction. Results: Ordinal logistic regression showed patients with more indicators of cardiac injury were significantly more likely to have greater brain injury as reflected by lower GCS scores (OR 0.76; 95%CI 0.58-0.99). There was a significantly increased multivariable adjusted risk of dying for each increase in measured cardiac injury (HR 2.41; 95% CI 1.29-4.53). Conclusions: Cardiac dysfunction was frequently observed in patients with TBI and we showed an association between increasing TBI severity and development of cardiac injury. Cardiovascular dysfunction was associated with an increased risk of in-hospital death. Adverse outcomes from TBI could potentially be mediated by cardiac injury, which could be used as a target for therapeutic intervention.

The incidence and causes of diarrhoea among critically ill patients receiving enteral tube feeding were investigated. Sixty acutely ill surgical or medical intensive care patients who had had a minimum of 48 hrs bowel rest were entered into the study. They were randomly assigned to receive one of two lactose free liquid formula diets - "Ensure", a commercially available feed containing 825 kCal/L and 34 g/L of protein with an osmolality of 441mOsm/1 or "Casilan Oil", a home-made feed containing 840 kCal /L and 45g/L of protein with an osmolality of 383 mOsm/1. The feeds were administered by constant nasogastric infusion. Patients received 1000ml at a rate of 40ml per hour for the first day and up to 2000ml at 80 ml per hour for the remainder of the study period. Investigations included documentation of medical history, medications administered and clinical details for each patient. Serum albumin was measured and the nutritional status of each patient was assessed using anthropometric measurements. Feeds were tested for bacterial contamination on the three days following the start of feeding and small intestinal bacterial overgrowth was assessed by the 1 g-¹⁴C Xylose breath test of Toskes and King. Twelve of the sixty patients had to be withdrawn from the trial within 24 hours of the start of enteral feeding for medical reasons. The remaining forty eight patients completed at least three days on enteral feeding and thereby became eligible for analysis. In 10/48 patients (21%) diarrhoea was present before enteral feeding began. Four of these 1 O patients continued to pass loose stools when enteral feeding was started while the remaining 6 settled. Diarrhoea developed in a further 10 patients (21%) after enteral feeding began. The overall incidence of diarrhoea in the group of critically ill patients studied was therefore 42% (20/48). However, of the fourteen patients who experienced diarrhoea during enteral feeding four had diarrhoea before feeding began. Therefore, the true incidence of diarrhoea related to enteral feeding was only 10/38 (26%). Furthermore, in 7 of these 10 patients, another possible cause of diarrhoea was present. There was no significant association between diarrhoea and nutritional status, hypoalbuminaemia, sepsis, length of bowel rest, sucralfate and antibiotic therapy other than amikacin. Twenty one patients received Ensure and 27 received Casilan Oil. Despite the differences in the composition of the feeds, the incidence of diarrhoea was similar on the Ensure and the Casilan Oil. No particular factor pertaining to the composition of the feeds was associated with diarrhoea. Significant contamination of feeds was universal but there was no constant relationship between bacterial counts, or types, and the occurrence of diarrhoea. Certain other factors were found to be significantly associated with diarrhoea. Abdominal injury was positively associated with the occurrence of diarrhoea (p<0.05). Diarrhoea could have been attributed to the underlying disease state in 7 of the patients. All three patients who were receiving lactulose as treatment for liver failure developed diarrhoea. While no association was noted between diarrhoea and antibiotic therapy in general, treatment with the antibiotic, amikacin, correlated significantly, albeit marginally, with the occurrence of diarrhoea (p<0.05). Twenty six patients were tested for small intestinal bacterial overgrowth. Only one patient, with an elevated excretion of ¹⁴CO₂, indicative of small intestinal bacterial overgrowth, developed diarrhoea. There was, however, a positive association between diarrhoea and decreased excretion of ¹⁴CO₂. It would appear that the bacterial flora was suppressed in patients with diarrhoea. Amikacin therapy was also associated with decreased excretion of ¹⁴CO₂. This may suggest that amikacin could have altered the bowel flora with resultant development of diarrhoea. While abdominal injury and disease were associated with the development of diarrhoea and amikacin was a possible factor associated with diarrhoea, the results of the present study indicate that enteral tube feeding with either the commercial feed, Ensure or the home-made feed, Casilan Oil was not a cause of diarrhoea in the majority of critically ill patients assessed. Furthermore, in most patients who commenced the trial with diarrhoea, improvement was noted on enteral feeding.

The biphasic cuirass ventilation (BCV) device is an alternative respiratory support device for patients with chronic respiratory failure. Considered by some a “forgotten” mode of supportive ventilation, the device is portable, lightweight, and easy to operate. Biphasic cuirass ventilation can also be used to rapidly resuscitate patients in acute respiratory distress and requires minimal technical skill to operate. Biphasic cuirass ventilation can be employed by the patient’s caregiver in the home setting, making it a viable alternative to other forms of mechanical ventilation (e.g., BiPAP) for patients enrolled in home hospice or palliative care. The article reviews current knowledge and aims to enhance awareness and encourage further study about cuirass ventilation, particularly with regard to its use in treating patients in the palliative care setting and in the home.

This thesis has three main research aims. First the development of a questionnaire to measure HRQOL of ICU patients. Second, to examine a model of HRQOL proposed to assist with the development of the questionnaire. Third, to examine the HRQOL outcomes of patient after hospital discharge. The proposed model is based on a review of conceptual issues related to Quality of Life (QOL), Health Status and HRQOL. After a content analysis of a broad range of definitions of QOL, Health Status and HRQOL, QOL was defined as a dynamic attitude, continually being modified by experience. It is a function of the cognitive and affective appraisals of the discrepancies between domain specific perceptions and expectations. HRQOL was defined as an individuals cognitive and affective response to, or the QOL associated with, their health status. Health status was seen to consist of two health dimensions, physical and psychological health, with each dimension being composed of a number of component measures assessed subjectively. The developed questionnaire, the Sydney Quality of Life (SQOL) had good construct validity, based on substantial correspondence between qualitative and quantitative data, and internal consistency data (factor analysis and Cronbach's alpha). It had good concurrent validity in relation to the Sickness Impact Profile. The second order factor analysis of the SQOL suggested that health status may consist of three dimensions, physical health, positive mental health and negative mental health. The HRQOL model when formally examined, using Structural Equation Modelling (using LISREL), was not supported. However, exploratory modelling supported the separation of mental health into positive and negative components. The structure of HRQOL was different for patients than for the community from which they came. Patients QOL was determined largely by positive mental and physical health, whereas community members QOL was largely determined by negative mental health. Sixty three percent of patients at 12 months after discharge had significantly worse physical and functional health, lower satisfaction with their lives, lower positive affect and poorer QOL. Overall, mental health adapts rapidly to the impact of serious physical ill health and hospitalisation. Implications for clinical practice are examined.

Patient safety is of particular importance within intensive care units (ICUs), where critically ill, vulnerable patients receive complex multidisciplinary care. Prior research has indicated that improving patient safety and reducing errors within healthcare requires a focus on systems and organisational culture issues. This thesis was concerned with three studies. One focused on assessing the patient safety culture and two on quality improvement initiatives within an intensive care unit (ICU) of a large teaching hospital. The first study involved a survey of ICU consultant, registrar and nursing staff regarding aspects of safety culture. This was conducted using an existing Hospital Survey on Patient Safety Culture. Of the twelve patient safety culture composites assessed, eight had scores lower than 50%, highlighting these as areas for improvement. Overall, while the survey results revealed that teamwork within the ICU was considered a strength, event reporting and patient care handovers and transitions were both considered areas with potential for improvement. The second study focused on the evaluation of a change initiative designed to improve the handover of patient clinical information in the ICU. This study involved a survey and interviews with consultant, registrar and nursing staff before and after the introduction of a Patient Management, Plan and Progress (PMPP) document. Examination of the survey responses involved both quantitative and qualitative analysis; respondent interview transcripts were analysed using thematic analysis. The results of this study revealed resistance to, and criticisms of, the introduction of the PMPP document; the initiative failed and use of the document was discontinued. The second initiative concerned an evaluation of the impact of a hospital-wide document on improving documentation of withdrawal of patient treatment within the ICU. This involved both quantitative and qualitative analysis, with a patient medical record audit of decisions to withdraw patient treatment within the ICU before and after the introduction of an Advance Care Plan (ACP) document. ICU consultant, registrar and nursing staff were interviewed regarding the process of withdrawal of patient treatment within the ICU. Interview transcripts were analysed using a modified grounded theory approach. Results revealed that the attempt to improve the documentation of withdrawal of treatment within the ICU failed, with the ACP document remaining unused in 89% of cases and incomplete in the remaining 11%. Also, documentation of decision-making and of the process within the medical records did not improve. Before-introduction findings revealed that only 26% of medical records met the pre-existing requirements for treatment withdrawal in the ICU, and after-introduction findings revealed that only 19% of medical records audited met the requirements of the ACP document. After-audit findings also revealed significant and inappropriate increases in the involvement of an ICU registrar both as primary and secondary decision-makers. In spite of an increased awareness of ICU staff concerning the importance of improving documentation, the medical record audit revealed less compliance with the standards required for documentation. Possible reasons for the document remaining essentially unused, as revealed from interviews with staff, included: previous criticisms by the coroner when they failed to complete a similar formalised document properly; perceived logistical issues associated with obtaining required staff signatures; disagreement concerning who should be involved in documenting the withdrawal of treatment process; and the existence of an ICU subculture of practice that, in one particular aspect of documentation, was not consistent with established hospital and ICU protocol and documentation requirements. The final chapter of this thesis considered implications of the results of the studies for the planning, development, implementation and evaluation of improvement programs within the ICU setting. The results were considered within the context of organisational change management theory and research, including factors that have been found to be critical in the success or failure of change programs, such as resistance to change, the involvement of key stakeholders in the change process, leadership, communication and organisational culture. It is suggested that management consultants with organisational change expertise in the planning, development, implementation and evaluation of such programs should be involved in future quality improvement initiatives. / http://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1297608 / Thesis (Ph.D.) -- University of Adelaide, School of Psychology, 2007

Royal Perth Hospital is the largest hospital in Western Australia and also has the largest intensive care unit (ICU) in the State. It was the first public hospital to provide intensive care services in Western Australia. This thesis examines the intermediateand long-term outcomes of patients admitted to the Royal Perth Hospital ICU between 1987 and 2002. Intermediate-term survival, defined as survival after discharge from hospital to one year and long-term survival, that exceeding one year after discharge, are important outcomes. Information on outcomes can be used by ICU staff in discussions with patients and their families and to inform policy decision-making and future research. The aim of this research was to examine one-year and long-term outcomes of patients admitted to the ICU between 1987 and 2002 and explore the factors that might be associated with the outcomes for 22,298 patients admitted to the ICU. A clinical ICU database was linked to morbidity and mortality databases by Data Linkage WA. A wide range of demographic and clinical factors were examined for their effect on outcome. These included age, sex, comorbidity, severity of illness, organ failure, ICU diagnostic groups, type of admission (medical, elective surgical and non-elective surgical), length of stay in ICU and era of admission (1987-1990, 1991-1994, 1995-1998, 1999-2002). Patients were followed-up to study end, 31st December 2003 or death if it occurred before study end, that is, up to 17 years after the index ICU admission. Kaplan Meier survival curves and Cox regression models were used to examine intermediate and long-term survival for patients who survived to hospital discharge. A comparison of admissions to hospital before and after the index ICU admission was made using descriptive statistics and logistic regression. Throughout the study period survival for the ICU cohort was shorter when compared to the Australian population. This was consistent throughout the follow-up period. The most important determinants of long-term survival were age, comorbidity, severity of illness and diagnostic group but the strength of association varied with the duration of follow-up. Although age, comorbidity and severity of illness increased among the critically ill survival improved over time. Hospital admissions were more frequent after a discharge from hospital that required an admission to ICU than before the index admission, even after adjusting for the ageing of the cohort. This study provides unique information about the survival and other outcomes of patients discharged from a hospital admission that included an ICU stay. The strength of this study lies in the follow-up to 17 years and the more comprehensive range of explanatory factors than in previous studies. This thesis demonstrates that follow-up studies after intensive care should be of sufficient duration to account for the changes that occur in survival over time and indicates the range of factors that should be taken into account when making comparisons of long-term survival.