Feasibility of Online Haemodiafiltration in Sleep Apnoea: A Randomized Crossover Study.

BACKGROUND: Sleep apnoea is prevalent in dialysis patients. Previous studies identified excessive inflammation in -patients with sleep apnoea. Online haemodiafiltration -(OL-HDF) may reduce systematic inflammation through better clearance of middle molecules. We aimed to determine the feasibility of OL-HDF in sleep apnoea management. METHODS: Eligible dialysis patients were screened for risk of sleep apnoea by nocturnal oximetry followed by a diagnostic sleep study to assess apnoea-hypopnea index (AHI). Patients with AHI ≥15/h were invited to a randomized crossover trial. The intervention was 2-month high-flux haemodialysis (HF-HD) followed by 2-month OL-HDF or vice versa with 1-month washout via HF-HD. Feasibility was assessed by patient recruitment and the primary outcome, severity of sleep apnoea (AHI). Secondary outcomes were pro-inflammatory cytokines, patient-reported daytime sleepiness, quality of sleep and health-related quality of life. RESULTS: Of 65 participants at risk of sleep apnoea, only 15 were consented and randomized (mean age 70 years, 80% male, mean AHI 42.2/h). AHI was not statistically different between OL-HDF versus HF-HD (55.6/h vs. 48.3/h, p = 0.134); however, when sleep apnoea was stratified into obstructive and central apnoea, patients had less obstructive episodes after treated by OL-HDF (23.2/h vs. 18.6/h, p = 0.178); a sensitivity analysis was performed excluding outliers, and the treatment effect for obstructive episodes was found to be statistically significant (11.1 vs. 18.2/h, p = 0.019). Pro-inflammatory biomarkers and patient-reported outcomes were similar between OL-HDF and HF-HD. CONCLUSION: Patient recruitment was a major challenge in this feasibility study. OL-HDF may reduce obstructive sleep apnoea; however, the result needs to be confirmed by larger studies.

Risk factors of sleep-disordered breathing in haemodialysis patients.

BACKGROUND: Sleep-disordered breathing (SDB) is common in patients with kidney disease; but often underdiagnosed as it is infrequently assessed in clinical practice. The objective of this study was to assess the risk factors of SDB in haemodialysis patients, and to identify useful assessment tools to detect SDB in this population. METHODS: We used nocturnal oximetry, Epworth Sleepiness Scale (ESS) and STOPBANG questionnaire to screen for SDB in haemodialysis patients. Presence of SDB was defined by Oxygen desaturation index (ODI≥5/h), and further confirmed by apnoea-hypopnea index (AHI) from an in-laboratory polysomnography. Blood samples were collected prior to commencing a haemodialysis treatment. RESULTS: SDB was detected in 70% of participants (N = 107, mean age 67 years). STOPBANG revealed that 89% of participants were at risk of SDB; however, only 17% reported daytime sleepiness on the ESS. Of the participants who underwent polysomnography (n = 36), obstructive sleep apnoea was identified in 86%, and median AHI was 34.5/h. Oximetry and AHI results were positively correlated (r = 0.62, P = 0.0001), as were oximetry and STOPBANG (r = 0.48; P<0.0001), but not ESS (r = 0.19; P = 0.08). Multivariate analysis showed that neck circumference (OR: 1.20; 95% CI: 1.07-1.34; P = 0.02) and haemoglobin (OR: 0.93; 95% CI: 0.88-0.97; P = 0.003) were independently associated with the presence of SDB. CONCLUSION: Dialysis patients with a large neck circumference and anaemia are at risk of SDB; using nocturnal oximetry is practical and reliable to screen for SDB and should be considered in routine management of dialysis patients, particularly for those who demonstrate risk factors.

Hunter and New England Diabetes Alliance: innovative and integrated diabetes care delivery in general practice.

Evidence-based standardised diabetes care is difficult to achieve in the community due to resource limitations, and lack of equitable access to specialist care leads to poor clinical outcomes. This study reports a quality improvement program in diabetes health care across a large health district challenged with significant rural and remote geography and limited specialist workforce. An integrated diabetes care model was implemented, linking specialist teams with primary care teams through capacity enhancing case-conferencing in general practice supported by comprehensive performance feedback with regular educational sessions. Initially, 20 practices were recruited and 456 patients were seen over 14 months, with significant improvements in clinical parameters. To date 80 practices, 307 general practitioners, 100 practice nurses and 1400 patients have participated in the Diabetes Alliance program and the program envisages enrolling 40 new practices per year, with a view to engage all 314 practices in the health district over time. Diabetes care in general practice appears suboptimal with significant variation in process measures. An integrated care model where specialist teams are engaged collaboratively with primary care teams in providing education, capacity enhancing case-conferences and performance monitoring may achieve improved health outcomes for people with diabetes.

Management of stroke in the Australian Indigenous population: from hospitals to communities.

BACKGROUND: Ischaemic strokes lead to significant morbidity and mortality within the Australian Indigenous population, with known variances in the management of strokes between indigenous and non-indigenous populations. AIMS: To compare investigations and management of indigenous and non-indigenous patients presenting to a New South Wales rural referral hospital with an ischaemic stroke to the national stroke standards across inpatient and outpatient settings. METHODS: Historical cohort study of 43 indigenous and 167 non-indigenous patients admitted to Tamworth Rural Referral Hospital with an ischaemic cerebrovascular accident. RESULTS: Indigenous patients were significantly less likely to have investigations completed, including carotid imaging (93.8% vs 100%, P = 0.012) and echocardiography (73.3% vs 97.7%, P = 0.004). Discharge follow up was significantly lower for the indigenous population (74.4% vs 87.4%, P = 0.034). Indigenous stroke patients were 15.8 years younger than non-indigenous subjects (56.8 vs 72.6 years old; P < 0.001). Indigenous patients were more likely to have stroke risk factors, including smoking (51.2% vs 15.0%; P < 0.001), diabetes mellitus (37.2% vs 16.8%, P = 0.003) and past history of cerebrovascular accident or transient ischaemic attack (50.2% vs 31.1%, P = 0.032). CONCLUSIONS: The investigation and post-discharge care of indigenous ischaemic stroke patients is inferior to non-indigenous patients. Indigenous patients within rural NSW have a higher prevalence of preventable disease, including those that confer a higher stroke risk. Further research is needed to investigate the cause of these discrepancies and to improving indigenous stroke care between hospitals and primary care providers.

Avoiding inappropriate urinary catheter use and catheter-associated urinary tract infection (CAUTI): a pre-post control intervention study.

BACKGROUND: Urinary tract infection (UTI) as the most common healthcare-associated infection accounts for up to 36% of all healthcare-associated infections. Catheter-associated urinary tract infection (CAUTI) accounts for up to 80% of these. In many instances indwelling urinary catheter (IDC) insertions may be unjustified or inappropriate, creating potentially avoidable and significant patient distress, embarrassment, discomfort, pain and activity restrictions, together with substantial care burden, costs and hospitalisation. Multifaceted interventions combining best practice guidelines with staff engagement, education and monitoring have been shown to be more effective in bringing about practice change than those that focus on a single intervention. This study builds on a nurse-led initiative that identified that significant benefits could be achieved through a systematic approach to implementation of evidence-based practice. METHODS: The primary aim of the study is to reduce IDC usage rates by reducing inappropriate urinary catheterisation and duration of catheterisation. The study will employ a multiple pre-post control intervention design using a phased mixed method approach. A multifaceted intervention will be implemented and evaluated in four acute care hospitals in NSW, Australia. The study design is novel and strengthened by a phased approach across sites which allows for a built-in control mechanism and also reduces secular effects. Feedback of point prevalence data will be utilised to engage staff and improve compliance. Ward-based champions will help to steward the change and maintain focus. DISCUSSION: This study will improve patient safety through implementation and robust evaluation of clinical practice and practice change. It is anticipated that it will contribute to a significant improvement in patient experiences and health care outcomes. The provision of baseline data will provide a platform from which to ensure ongoing improvement and normalisation of best practice. This study will add to the evidence base through enhancing understanding of interventions to reduce CAUTI and provides a prototype for other studies focussed on reduction of hospital acquired harms. Study findings will inform undergraduate and continuing education for health professionals. TRIAL REGISTRATION: ACTRN12617000090314 . Registered 17 January 2017. Retrospectively registered.

The effect of context on performance of an acute medical unit: experience from an Australian tertiary hospital.

OBJECTIVE: To ascertain the improvements in length of stay and discharge rates following the opening of an acute medical unit (AMU). METHODS: Retrospective cohort study of all patients admitted under general medicine from June-November 2008. Main outcome measures were length of stay in hospital and in the emergency department (ED). RESULTS: The length of time spent in the emergency department for those admitted to the AMU was significantly shorter than those admitted directly to a medical ward (6.83h v. 9.40h, P<0.0001). A trend towards shorter hospital length of stay continued after the AMU opened compared with the same period in the previous year (5.15 days (2.49, 11.57 CI) v. 5.66 days (2.76, 11.52 CI)). However, the number of ward transfers for a patient and the need to wait for a nursing home bed or public rehabilitation affected length of stay much more than the AMU. CONCLUSION: An AMU was successful in decreasing ED length of stay and contributed to decreasing hospital length of stay. However, we suggest that local context is crucially important in tailoring an AMU to obtain maximal benefit, and that AMUs are not a 'one size fits all' solution.