Supporting adoption of the palliative approach toolkit in residential aged care: an exemplar of organisational facilitation for sustainable quality improvement.

Background: National guidelines and resources to support a palliative approach in residential aged care were designed to improve the provision of palliative and end-of-life care; however, implementation has been sporadic.Objective: To support implementation of a palliative approach in aged care using a facilitation training model and existing palliative approach toolkit resources.Methods: Organisation-wide educational intervention delivered by a specialised Palliative Approach Facilitator for 6 months. Training included palliative approach principles, advance care planning, clinical management, equipment use, case conferencing, care planning and self-care.Results: The intervention included 197 internal and external staff and reviewed advanced care plans for 484 clients. Increased staff knowledge and confidence with discussions involving advance care planning, end-of-life care and supporting bereaving families resulted.Conclusion: This targeted intervention addressed barriers to adoption of a palliative approach, representing a flexible training model for building workforce capacity, promoting quality improvement and sustaining best practice in aged care settings.

The appropriateness of low-acuity cases referred for emergency ambulance dispatch following ambulance service secondary telephone triage: A retrospective cohort study.

OBJECTIVE: Ambulance-based secondary telephone triage systems have been established in ambulance services to divert low-acuity cases away from emergency ambulance dispatch. However, some low-acuity cases still receive an emergency ambulance dispatch following secondary triage. To date, no evidence exists identifying whether these cases required an emergency ambulance. The aim of this study was to investigate whether cases were appropriately referred for emergency ambulance dispatch following secondary telephone triage. METHODS: A retrospective cohort analysis was conducted of cases referred for emergency ambulance dispatch in Melbourne, Australia following secondary telephone triage between September 2009 and June 2012. Appropriateness was measured by assessing the frequency of advanced life support (ALS) treatment by paramedics, and paramedic transport to hospital. RESULTS: There were 23,696 cases included in this study. Overall, 54% of cases received paramedic treatment, which was similar to the state-wide rate for emergency ambulance cases (55.5%). All secondary telephone triage cases referred for emergency ambulance dispatch had transportation rates higher than all metropolitan emergency ambulance cases (82.2% versus 71.1%). Two-thirds of the cases that were transported were also treated by paramedics (66.5%), and 17.7% of cases were not transported to hospital by ambulance following paramedic assessment. CONCLUSIONS: Overall, the cases returned for emergency ambulance dispatch following secondary telephone triage were appropriate. Nevertheless, the paramedic treatment rates in particular indicate a considerable rate of overtriage requiring further investigation to optimize the efficacy of secondary telephone triage.

Patient and case characteristics associated with 'no paramedic treatment' for low-acuity cases referred for emergency ambulance dispatch following a secondary telephone triage: a retrospective cohort study.

BACKGROUND: Predicting case types that are unlikely to be treated by paramedics can aid in managing demand for emergency ambulances by identifying cases suitable for alternative management pathways. The aim of this study was to identify the patient characteristics and triage outcomes associated with 'no paramedic treatment' for cases referred for emergency ambulance dispatch following secondary telephone triage. METHODS: A retrospective cohort analysis was conducted of cases referred for emergency ambulance dispatch following secondary telephone triage between September 2009 and June 2012. Multivariable logistic regression modelling was used to identify explanatory variables associated with 'no paramedic treatment'. RESULTS: There were 19,041 cases eligible for inclusion in this study over almost three years, of which 8510 (44.7%) were not treated after being sent an emergency ambulance following secondary triage. Age, time of day, pain, triage guideline group, and comorbidities were associated with 'no paramedic treatment'. In particular, cases 0-4 years of age or those with psychiatric conditions were significantly less likely to be treated by paramedics, and increasing pain resulted in higher rates of paramedic treatment. CONCLUSIONS: This study highlights that case characteristics can be used to identify particular case types that may benefit from care pathways other than emergency ambulance dispatch. This process is also useful to identify gaps in the alternative care pathways currently available. These findings offer the opportunity to optimise secondary telephone triage services to support their strategic purpose of minimising unnecessary emergency ambulance demand and to match the right case with the right care pathway.

Epidemiology of unplanned out-of-hospital births attended by paramedics.

BACKGROUND: Over the previous two decades the incidence and number of unplanned out of hospital births Victoria has increased. As the only out of hospital emergency care providers in Victoria, paramedics would provide care for women having birth emergencies in the community. However, there is a lack of research about the involvement of paramedics provide for these women and their newborns. This research reports the clinical profile of a 1-year sample caseload of births attended by a state-wide ambulance service in Australia. METHODS: Retrospective data previously collected via Victorian Ambulance Clinical Information System (VACIS ®) an in-field electronic patient care record was provided by Ambulance Victoria. Cases were identified via a comprehensive filter, and analysed using SPSS version 19. RESULTS: Over a 12-month period paramedics attended 324 out-of-hospital births including 190 before paramedics' arrival. Most (88.3%) were uncomplicated precipitous term births. However, paramedics documented various obstetric complications including postpartum haemorrhage, breech, cord prolapse, prematurity and neonatal death. Furthermore, nearly one fifth (16.7%) of the women had medical histories that had potential to complicate their clinical management, including taking illicit or prescription drugs. Mothers were more likely to be multiparas. Births were more likely to occur between 2200 and 0600 h. Paramedics performed a range of interventions for both mothers and babies. CONCLUSIONS: Paramedics provided emergency care for prehospital out-of-hospital births. Although most were precipitous uneventful births at term, paramedics used complex obstetric assessment and clinical skills. These findings have implications for paramedic clinical practice and education around management of unplanned out of hospital births.

Appropriateness of cases presenting in the emergency department following ambulance service secondary telephone triage: a retrospective cohort study.

OBJECTIVE: To investigate the appropriateness of cases presenting to the emergency department (ED) following ambulance-based secondary telephone triage. DESIGN: A pragmatic retrospective cohort analysis of all the planned and unplanned ED presentations within 48 hours of a secondary telephone triage. SETTING: The secondary telephone triage service, called the Referral Service, and the hospitals were located in metropolitan Melbourne, Australia and operated 24 hours a day, servicing 4.25 million people. The Referral Service provides an in-depth secondary triage of cases classified as low acuity when calling the Australian emergency telephone number. POPULATION: Cases triaged by the Referral Service between September 2009 and June 2012 were linked to ED and hospital admission records (N=44,523). Planned ED presentations were cases referred to the ED following the secondary triage, unplanned ED presentations were cases that presented despite being referred to alternative care pathways. MAIN OUTCOME MEASURES: Appropriateness was measured using an ED suitability definition and hospital admission rates. These were compared with mean population data which consisted of all of the ED presentations for the state (termed the 'average Victorian ED presentation'). RESULTS: Planned ED presentations were more likely to be ED suitable than unplanned ED presentations (OR 1.62; 95% CI 1.5 to 1.7; p<0.001) and the average Victorian ED presentation (OR 1.85; 95% CI 1.01 to 3.4; p=0.046). They were also more likely to be admitted to the hospital than the unplanned ED presentation (OR 1.5; 95% CI 1.4 to 1.6; p<0.001) and the average Victorian ED presentation (OR 2.3, 95% CI 2.24 to 2.33; p<0.001). Just under 15% of cases diverted away from the emergency care pathways presented in the ED (unplanned ED attendances), and 9.5% of all the alternative care pathway cases were classified as ED suitable and 6.5% were admitted to hospital. CONCLUSIONS: Secondary telephone triage was able to appropriately identify many ED suitable cases, and while most cases referred to alternative care pathways did not present in the ED. Further research is required to establish that these were not inappropriately triaged away from the emergency care pathways.

Differences in emergency ambulance demand between older adults living in residential aged care facilities and those living in the community in Melbourne, Australia.

OBJECTIVE: To describe the clinical presentation and temporal variation in ambulance service cases involving patients aged 65 years or older (older adults) from residential aged care facilities and those who are community dwelling (CD). METHODS: This study used four years of electronic case records from Ambulance Victoria in Melbourne, Australia. Trigonometric regression was used to analyse demand patterns. RESULTS: Residential aged care facility cases included proportionally more falls and infection-related problems and fewer circulatory-related incidents than CD cases. Community dwelling demand patterns differed between weekdays and weekends and peaked late morning. Residential aged care facility cases peaked late morning, with a secondary peak early evening, but with no significant difference between days. CONCLUSIONS: Older adult ambulance demand has distinct temporal patterns that differ by place of residence and are associated with different clinical presentations. These results provide a basis for informing ambulance planning and the identification of alternate health services.

Information management in the Australian aged care setting.

BACKGROUND: Information management systems and processes have an impact on quality and safety of care in any setting and particularly in the complex care setting of aged care. Few studies have comprehensively examined information management in the Australian aged care setting. OBJECTIVE: To (i) critically analyse and synthesize evidence related to information management in aged care, (ii) identify aged care data collection frameworks and (iii) identify factors impacting information management. METHODS: An integrative review of Australian literature published between March 2008 and August 2014 and data collection frameworks concerning information management in aged care were carried out. RESULTS: There is limited research investigating the information-rich setting of aged care in Australia. Electronic systems featured strongly in the review. Existing research focuses on residential settings with community aged care largely absent. Information systems and processes in the setting of aged care in Australia are underdeveloped and poorly integrated. CONCLUSIONS: Data quality and access are more problematic within community aged care than residential care settings. The results of this review represent an argument for a national approach to information management in aged care to address multiple stakeholder information needs and more effectively support client care.

Supporting a good life and death in residential aged care: an exploration of service use towards end of life.

BACKGROUND: The concept of a 'good death' involves end-of-life care in an appropriate setting and in keeping with the person's preferences. Limited research has examined the circumstances and place of death for older people living in residential aged care. OBJECTIVE: This exploratory study investigated the nature of health service use and place of death of older people living in aged care to identify factors that lead to transfer of end-of-life care to other settings and poorer outcomes. METHODS: Retrospective review of residential aged care client records between July 2014 and June 2015. CONCLUSION: The majority of people in this study died in their home setting of residential care and a number were in receipt of palliative care prior to their deaths. The study proposes a national approach to the use of terminology and documents related to palliative and end-of-life care and education in assessment and recognition of nearing the end of life.

The rhetoric and reality of nursing in aged care: views from the inside.

BACKGROUND: Aged care services and nursing roles are evolving in response to policy reform and increasing consumer expectations, however the nursing workforce is declining in numbers. AIMS: To examine registered nurses' perceptions and experiences of working in aged care. METHODS: Descriptive, exploratory study involving thematic analysis of individual interviews. RESULTS: Key issues related to: professional role strain; workforce challenges; managing expectations, relationships and communication; balancing rights and risk in decision-making; changing models of care and impacts of policy and regulation. CONCLUSION: Expectations and perceptions of aged care nursing are unclear and conflicted. Nurses face significant challenges in meeting consumer, profession, organisational, and policy expectations amidst workforce instability and resource constraints. Structural barriers and aged care policy environments represent significant threats to sustaining nursing in aged care.

Utilisation of emergency medical services for severe hypoglycaemia: An unrecognised health care burden.

AIMS: Diabetes is associated with several acute, life-threatening complications yet there are limited data on the utilisation of prehospital services for their management. This study aimed to examine the utilisation of emergency medical services (EMS) for prehospital hypoglycaemia, including patient characteristics and factors related to hospital transportation. METHODS: An observational study of patients requiring EMS for hypoglycaemia across Victoria, Australia over three years was conducted. Pre-specified data including patient demographics, comorbidities, examination findings and transport outcomes were obtained. Logistic regression was used to assess factors associated with transportation. RESULTS: During the study period, 12,411 hypoglycaemia events were attended by paramedics for people with diabetes. The majority were individuals with type 1 diabetes (58.8%), followed by type 2 diabetes (35.2%) and unspecified diabetes type (5.9%). Thirty-eight percent of patients were transported to hospital by EMS following hypoglycaemia. Factors associated with transport by EMS included extremes of age (<15 and >75years), female gender, type 2 diabetes, event at a nursing home or hospital/community clinic, presence of comorbidities and time of day. CONCLUSIONS: Examination of the utilisation of EMS for hypoglycaemia has identified a previously unquantified need for emergency care for people with diabetes as well as factors related to hospital transportation.

Antenatal Emergency Care Provided by Paramedics: A One-Year Clinical Profile.

OBJECTIVE: To report on clinical and socio-demographic factors of a one-year caseload of women attended by a statewide ambulance service in Australia, who presented during pregnancy, prior to the commencement of labor. METHODS: Retrospective clinical data collected via in-field electronic patient care record (VACIS®) by paramedics during clinical management was provided by Ambulance Victoria. Cases were electronically extracted from the Ambulance Victoria Clinical Data Warehouse via comprehensive filtering followed by case review. RESULTS: Over a 12-month period, paramedics were called to 2,098 women with pregnancy as a primary or non-primary clinical consideration. Women's ages ranged from 14 to 48 years. The majority were multigravidas (86%). There was a greater chance that ambulance services would be required during business hours than any other time of the day. Paramedics noted pregnant women required ambulance services for a range of primary presenting symptoms both obstetric (n = 1137) and non-obstetric (n = 961). Some women had pre-existing conditions including asthma, hypertension, and diabetes potentially complicating their pregnancies. Paramedics administered analgesia to one third of the women. Paired t-tests revealed significant improvement in the pain relief and overall vital signs of the women encountered. Less than half the women (n = 986, 47%) required interventions. CONCLUSIONS: This is a unique population wide analysis of ambulance service resource use exploring the clinical profile of pregnant women requiring ambulance services in one calendar year. To manage obstetric and non-obstetric complications in this population safely and effectively, paramedics require an understanding of the unique physiological adaptions during pregnancy. This study therefore has both educational and practice implications.

Paramedics׳ involvement in planned home birth: A one-year case study.

OBJECTIVE: to report findings from a study performed prior to the introduction of publicly funded home birth programmes in Victoria, Australia, that investigated the incidence of planned home births attended by paramedics and explored the clinical support they provided as well as the implications for education and practice. METHODS: retrospective data previously collected via an in-field electronic patient care record (VACIS(®)) was provided by a state-wide ambulance service. Cases were identified via a comprehensive filter, manually screened and analysed using SPSS version 19. RESULTS: over a 12-month period paramedics attended 26 intended home births. Eight women were transported in labour, most for failure to progress. Three called the ambulance service and their pre-organised midwife simultaneously. Paramedics were required for a range of complications including post partum haemorrhage, perineal tears and neonatal resuscitation. Procedures performed for mothers included IV therapy and administering pain relief. For infants, paramedics performed intermittent positive pressure ventilation, endotracheal intubation and external cardiac compression. Of the 23 women transferred to hospital, 22 were transported to hospital within 32minutes. CONCLUSIONS: findings highlight that paramedics can provide clinical support, as well as efficient transportation, during perinatal emergencies at planned home births. Cooperative collaboration between ambulance services, privately practising midwives and maternity services to develop guidelines for emergency clinical support and transportation service may minimise risk associated with planned home births. This could also lead to opportunities for interprofessional education between midwives and paramedics.

A novel approach for managing the growing demand for ambulance services by low-acuity patients.

Objective The aim of the present study was to describe the Ambulance Victoria (AV) secondary telephone triage service, called the Referral Service (RS), for low-priority patients calling triple zero. This service provides alternatives to ambulance dispatch, such as doctor or nurse home visits. Methods A descriptive epidemiological review of all the cases managed between 2009 and 2012 was conducted, using data from AV case records, the Victorian Admitted Episodes Dataset and the Australian Bureau of Statistics. Cases were reviewed for patient demographics, condition, final disposition and RS outcome. Results In all, 107148 cases were included in the study, accounting for 10.3% of the total calls for ambulance attendance. Median patient age was 54 years and 55% were female. Geographically based socioeconomic status was associated with the rate of calls to the RS (r=-0.72; 95% confidence interval CI -0.104, -0.049; P<0.001). Abdominal pain and back symptoms were the most common patient problems. Although 68% of patients were referred to the emergency department, only 27.6% of the total cases were by emergency ambulance; the remainder were diverted to non-emergency ambulance or the patient's own private transport. The remaining 32% of cases were referred to alternative service providers or given home care advice. Conclusions This paper describes the use of an ongoing secondary triage service, providing an effective strategy for managing emergency ambulance demand. What is known about the topic? Some calls to emergency services telephone numbers for ambulance assistance consist of cases deemed to be low-acuity that could potentially be better managed in the primary care setting. The demand on ambulance resources is increasing each year. Secondary telephone triage systems have been trialled in ambulance services in the US and UK with minimal success in terms of overall impact on ambulance resourcing. What does this paper add? This study describes a model of secondary telephone triage in the ambulance setting that has provided an effective way to divert patients to more suitable forms of health care to meet their needs. What are the implications for practitioners? The implications for practitioners are vast. Some of the issues that currently face paramedics include: fatigue because of high workloads; skills decay because of a lack of exposure to patients requiring intervention with skills the paramedics have, as well as a lack of time for paramedics to practice these skills during their downtime; and decreasing job satisfaction linked to both these factors. Implications for patients include quicker response times because more ambulances will be available to respond and increased patient safety because of decreased fatigue and higher skill levels in paramedics.

Developing an Australian health and aged care research agenda: a systematic review of evidence at the subacute interface.

Objective The aim of the present study was to systematically review articles describing recent interventions that aimed to improve access and outcomes for older people at the interface between health and aged care, with a focus on subacute care programs of palliative care, rehabilitation, geriatric evaluation and management (GEM) and psychogeriatrics. Methods Australian studies published between 2008 and 2013were evaluated using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) and National Health and Medical Research Council of Australia (NHMRC) guidelines. Included studies were summarised according to focus areas and results discussed in the current Australian subacute health care context. Results Eleven Australian research articles were identified. Three did not achieve any NHMRC rating level because of methodological approach. Focus areas included: discharge planning; information management or communication; rehabilitation; hospital treatment in residential care; screening and intervention; and Telehealth. Interventions were primarily system centred; only three studies featured patient-level outcome measures. Conclusions There is limited high-quality research investigating the effectiveness of interventions at the health and aged care interface of subacute care. Further research is needed. What is known about the topic? Subacute care offers important healthcare programs for older people, operating at the interface between health and aged care. However, for the most part this has not been subject to research scrutiny. What does this paper add? Identified studies were predominantly hospital oriented and designed to avoid hospital admission and associated costs. Locally integrated, collaborative and multidiscipline based interventions improve system-level outcomes. Alternative and individualised models of care, particularly when provided in their home setting, yields positive outcomes for older people. What are the implications for practitioners? Health and aged care reforms and related research agenda must include the perspectives and experiences of patients and/or carers accessing subacute care programs, yet these are under-reported. The present review highlights opportunities to improve the quality of existing evidence and create a research agenda for the future.

Temporal trends in falls cases seen by EMS in Melbourne: The effect of residence on time of day and day of week patterns.

BACKGROUND: Injury due to falls is a major public health problem, especially for older people. We aimed to determine the accuracy of the ambulance call taker triage algorithm relative to paramedic assessment, and characterise variation in ambulance service demand for falls cases involving older adults over time and by residence type. METHOD: We obtained all ambulance case records for January 2008 to December 2011 for adults aged 65 or over in Melbourne, Australia. Data elements comprised age, gender, date and time of emergency call, dispatch category, location of incident and the patient's clinical condition as ascertained by paramedics. We compared cases coded as falls by the call taker triage algorithm with those identified by paramedics. We also examined temporal variation (hour of day and day of week) in ambulance service demand for cases involving older adults, and compared community-dwelling cases and those from Residential Aged Care Facilities (RACFs). We used negative binomial regression to compare counts and trigonometric regression to compare temporal variation patterns. RESULTS: Over the four-year study period 77,891 falls cases involved older adults (6.5% of overall ambulance demand). Eighty-seven per cent of paramedic-assessed falls cases were correctly identified by the triage system. The RACF population was older (median age 87 years, IQR 82-91 vs. 82 years, IQR 76-87), had higher hospital transport rates (89.5% vs. 75.8%) and a higher incidence of falls at any age than the community-dwelling population. The temporal pattern for fall cases for all residence types peaked between 6:00 and 12:00, but fall cases from RACFs showed an additional peak in the evening between 17:00 and 20:00. CONCLUSION: Falls by older people are the second-biggest contributor to ambulance demand in Melbourne, consuming significant operational resources. Using call taker triage data instead of paramedic case records to calculate falls cases may underestimate the true incidence of falls by up to 13%. Temporal patterns can inform ambulance service policy and practice, falls referral and prevention programmes to optimise service delivery which will lessen the number of future falls cases.

Information management for aged care provision in Australia: development of an aged care minimum dataset and strategies to improve quality and continuity of care.

BACKGROUND: Efficient information systems support the provision of multi-disciplinary aged care and a variety of organisational purposes, including quality, funding, communication and continuity of care. Agreed minimum data sets enable accurate communication across multiple care settings. However, in aged care multiple and poorly integrated data collection frameworks are commonly used for client assessment, government reporting and funding purposes. OBJECTIVE: To determine key information needs in aged care settings to improve information quality, information transfer, safety, quality and continuity of care to meet the complex needs of aged care clients. METHOD: Modified Delphi methods involving five stages were employed by one aged care provider in Victoria, Australia, to establish stakeholder consensus for a derived minimum data set and address barriers to data quality. RESULTS: Eleven different aged care programs were identified; with five related data dictionaries, three minimum data sets, five program standards or quality frameworks. The remaining data collection frameworks related to diseases classification, funding, service activity reporting, and statistical standards and classifications. A total of 170 different data items collected across seven internal information systems were consolidated to a derived set of 60 core data items and aligned with nationally consistent data collection frameworks. Barriers to data quality related to inconsistencies in data items, staff knowledge, workflow, system access and configuration. CONCLUSION: The development an internal aged care minimum data set highlighted the critical role of primary data quality in the upstream and downstream use of client information; and presents a platform to build national consistency across the sector.

Temporal trends in cardiovascular demand in EMS: Weekday versus weekend differences.

Diagnosed cardiovascular disease has well-reported temporal patterns, with demand distribution peaks in the late morning and greater case numbers on Mondays and in winter. We aimed to report temporal patterns of presumptive cardiovascular disease cases as determined after emergency medical services (EMS) assessment and to characterize the demand distribution by day of the week. We conducted a secondary analysis of all Ambulance Victoria cases in metropolitan Melbourne (Victoria, Australia) between January 2008 and December 2011. Analyzed data included time of call, incident mechanism, location type, final assessment (paramedic "diagnosis") and patient age. We employed Poisson's regression to analyze case numbers and trigonometric regression to quantify distribution patterns. The 182 983 cases of presumptive cardiovascular disease observed during the study period constituted 15.2% of total demand. The median age of persons attended was 72 (IQR 57-82) and there was an almost even split between genders (51% female). Peak numbers of most cardiovascular case types occurred between 09:00 and 11:00; the only exception was acute pulmonary edema, which had peak case numbers at 06:00. Trigonometric regression showed distinct time of day distribution patterns, which did not alter by season. Although weekend day demand was lower than on Mondays, due to a different distribution pattern, these differences were not constant over the 24-hour period. There were up to 27% fewer cases at 09:00 and up to 2.8% more cases at 01:00 on weekends compared to Mondays. We have shown that examination of presumptive cardiovascular disease using not only case counts but also demand distribution patterns allows for a greater understanding of ambulance demand. Monday might be the most frequent day for cardiovascular cases but different patterns of demand occur on weekends. Increased knowledge of when different types of cases are most likely to occur will help inform EMS planning, including paramedic capacity and resources.

General practice and residential aged care: A qualitative study of barriers to access to care and the role of remuneration.

BACKGROUND: More than 169,000 people live in residential aged care facilities (RACFs). As people age they use health services, particularly general practitioner (GP) services, more frequently but many GPs do not attend patients in RACFs. AIMS: To examine GPs' perceptions of barriers to providing care to patients in RACFs. METHODS: This study was conducted in June 2014 in the Bayside Medicare Local (BML) region in Victoria, Australia; all participants were drawn from this region. Two focus groups (FGs) were conducted. One was for GPs (n=5) that have a specific interest in practicing in RACFs, the other with RACF staff (n=8) representing public, private, and not-for-profit aged care providers. Results were presented to the Royal Australian College of General Practitioners (RACGP) National Standing Committee for General Practice Advocacy and Support for feedback and validation of the findings against national perspectives of the effect of remuneration on the provision of GP services in RACFs. RESULTS: Remuneration problems are a barrier to the provision of GP services to patients in RACFs. These problems can be grouped into: direct remuneration, opportunity cost, additional administrative burden, and unremunerated work. GPs' perceptions of the effects of these problems on willingness to practice in RACFs are described. CONCLUSION: Innovative models of remuneration for GPs attending RACFs are needed to ameliorate the problems identified. Such models need to capture and pay for activities that are time consuming but often unremunerated.

Effectiveness of the Valsalva Manoeuvre for reversion of supraventricular tachycardia.

BACKGROUND: People with the cardiac arrhythmia supraventricular tachycardia (SVT) frequently present to clinicians in the prehospital and emergency medicine settings. Restoring sinus rhythm by terminating the SVT involves increasing the refractoriness of atrioventricular nodal tissue within the myocardium by means of vagal manoeuvres, pharmacological agents, or electrical cardioversion. A commonly used first-line technique to restore the normal sinus rhythm (reversion) is the Valsalva Manoeuvre (VM). This is a non-invasive means of increasing myocardial refractoriness by increasing intrathoracic pressure for a brief period, thus stimulating baroreceptor activity in the aortic arch and carotid bodies, resulting in increased parasympathetic (vagus nerve) tone. OBJECTIVES: To assess the evidence of effectiveness of the VM in terminating SVT. SEARCH METHODS: We updated the electronic searches of the Cochrane Central Register of Controlled Trials (CENTRAL; 2014, Issue 7); MEDLINE Ovid (1946 to August week 3, 2014); EMBASE Classic and EMBASE Ovid (1947 to 27 August 2014); Web of Science (1970 to 27 August 2014); and BIOSIS Previews (1969 to 22 August 2014). We also checked trials registries, the Index to Theses, and the bibliographies of all relevant publications identified by these strategies. SELECTION CRITERIA: We included all randomised controlled trials (RCTs) that examined the effectiveness of VM in terminating SVT. DATA COLLECTION AND ANALYSIS: Two review authors independently extracted the data using a standardised form. We assessed each trial for internal validity, resolving any differences by discussion. We then extracted and entered data into Review Manager 5. MAIN RESULTS: In this update, we did not identify any new RCT studies for inclusion. We identified two RCT studies as ongoing that we are likely to include in future updates. Accordingly, our results are unchanged and include three RCTs with a total of 316 participants. All three studies compared the effectiveness of VM in reverting SVT with that of other vagal manoeuvres in a cross-over design. Two studies induced SVT within a controlled laboratory environment. Participants had ceased all medications prior to engaging in these studies. The third study reported on people presenting to a hospital emergency department with an episode of SVT. These participants were not controlled for medications or other factors prior to intervention.The two laboratory studies demonstrated reversion rates of 45.9% and 54.3%, whilst the clinical study demonstrated reversion success of 19.4%. This discrepancy may be due to methodological differences between studies, the effect of induced SVT versus spontaneous episodic SVT, and participant factors such as medications and comorbidities. We were unable to assess any of these factors, or adverse effects, further, since they were either not described in enough detail or not reported at all.Statistical pooling was not possible due to heterogeneity between the included studies. AUTHORS' CONCLUSIONS: We did not find sufficient evidence to support or refute the effectiveness of VM for termination of SVT. Further research is needed, and this research should include a standardised approach to performance technique and methodology.

Time of Day and Day of Week Trends in EMS Demand.

OBJECTIVE: We examined temporal variations in overall Emergency Medical Services (EMS) demand, as well as medical and trauma cases separately. We analyzed cases according to time of day and day of week to determine whether population level demand demonstrates temporal patterns that will increase baseline knowledge for EMS planning. METHODS: We conducted a secondary analysis of data from the Ambulance Victoria data warehouse covering the period 2008-2011. We included all cases of EMS attendance which resulted in 1,203,803 cases for review. Data elements comprised age, gender, date and time of call to the EMS emergency number along with the clinical condition of the patient. We employed Poisson regression to analyze case numbers and trigonometric regression to quantify distribution patterns. RESULTS: EMS demand exhibited a bimodal distribution with the highest peak at 10:00 and a second smaller peak at 19:00. The highest number of cases occurred on Fridays, and the lowest on Tuesdays and Wednesdays. However, the distribution of cases throughout the day differed by day of week. Distribution patterns on Fridays, Saturdays and Sundays differed significantly from the rest of the week (p < 0.001). When categorized into medical or trauma cases, medical cases were more frequent during working hours and involved patients of higher mean age (57 years vs. 49 years for trauma, p < 0.001). Trauma cases peaked on Friday and Saturday nights around midnight. CONCLUSION: Day of week EMS demand distribution patterns reveal differences that can be masked in aggregate data. Day of week EMS demand distribution patterns showed not only which days have differences in demand but the times of day at which the demand changes. Patterns differed by case type as well. These differences in distribution are important for EMS demand planning. Increased understanding of EMS demand patterns is imperative in a climate of ever-increasing demand and fiscal constraints. Further research is needed into the effect of age and case type on EMS demand.