Review Article | Open Access
Roberto Forero, Geoff McDonnell, Blanca Gallego, Sally McCarthy, Mohammed Mohsin, Chris Shanley, Frank Formby, Ken Hillman, "A Literature Review on Care at the End-of-Life in the Emergency Department", Emergency Medicine International, vol. 2012, Article ID 486516, 11 pages, 2012. https://doi.org/10.1155/2012/486516
A Literature Review on Care at the End-of-Life in the Emergency Department
The hospitalisation and management of patients at the end-of-life by emergency medical services is presenting a challenge to our society as the majority of people approaching death explicitly state that they want to die at home and the transition from acute care to palliation is difficult. In addition, the escalating costs of providing care at the end-of-life in acute hospitals are unsustainable. Hospitals in general and emergency departments in particular cannot always provide the best care for patients approaching end-of-life. The main objectives of this paper are to review the existing literature in order to assess the evidence for managing patients dying in the emergency department, and to identify areas of improvement such as supporting different models of care and evaluating those models with health services research. The paper identified six main areas where there is lack of research and/or suboptimal policy implementation. These include uncertainty of treatment in the emergency department; quality of life issues, costs, ethical and social issues, interaction between ED and other health services, and strategies for out of hospital care. The paper concludes with some areas for policy development and future research.
Emergency departments (EDs) are increasingly used for patients, whether they are seriously ill as a result of being at the end-of-life (EOL) or whether they have a mainly acute and potentially treatable condition . A growing number of patients at the EOL are admitted to EDs and receive increasingly invasive care [2, 3]. Clinical, social, and economic dimensions have been identified as key aspects of concern [4–14].
Studies exploring the impact of hospital care on the quality of the dying process highlight frequent, unsustainable, and sometimes unnecessary costs for an already stressed healthcare system [4, 5, 15–17].
There is also evidence that some patients at EOL experience a dying process that not always complies with the basic understanding of a “good death” [3, 18–23]. A comprehensive framework to improve care for the dying was developed by the Institute of Medicine (IOM): “A decent or good death is the one that is: free from avoidable distress and suffering for patients, families, and caregivers; in general accord with patients’ and families’ wishes; and reasonably consistent with clinical, cultural, and ethical standards”. The IOM framework also described several initiatives to improve the care of the dying, but there is limited knowledge about how these models of care for patients at EOL can be applied in the ED .
The main purpose of Emergency Medicine (EM) is to treat undifferentiated patients across age and disease or injury spectra, to create a time-restricted assessment of the patient, to resuscitate and stabilise in order to establish initial or definitive treatment, and finally to discharge the patient to an appropriate facility [24–32].
In the case of patients at EOL, these principles cannot always be applied or implemented because these patients cannot be treated in the same manner as patients with no terminal conditions [14, 33, 34]. Secondly, patients at EOL cannot be assessed and treated on the same time-restricted manner as other patients because they often present with multiple complications and several complex conditions [14, 35, 36]. Thirdly, resuscitation and active treatment for these patients may not be the best nor the preferred option, especially if those outcomes are against their wishes [37, 38], and they cannot always be discharged from ED to an appropriate facility or service [17, 39, 40].
Of the estimated 140,000 Australians who die each year , it is calculated that at least 100,000 of them die as a result of an “anticipated”  or “expected” death . Of the 140,000 who die each year, 54% die in acute care hospitals; 20% die in hospices/palliative care; 16% die at home; 10% die in nursing homes . The elderly tend to be overrepresented in EDs [44, 45].
The characteristics of patients at EOL comprise a wide range of demographic, clinical, and psychosocial factors in relation to time and place of death [21, 46–48]. They also comprise a wide range of ages [4, 11, 49–55] and conditions such as cancer [3, 4, 19, 24, 25, 56–62], terminal respiratory diseases [63–66], cardiac failure [26, 67–70], profound intellectual and physical disability, and advanced dementia [1, 47, 50, 62, 71, 72]. These patients pose a challenge in the ED because the majority appear not to have access to palliative care options, in particular those with non-cancer conditions.  Patients are managed in the ED when palliative management at home would have been more appropriate if a transition from active to palliative management had been made earlier [55, 74–76].
In the past, the limits of conventional medical treatment were largely determined by the general practitioner (GP). Today, it is more common for the GP to refer the patient to hospital when the illness becomes severe and life is threatened [2, 53, 77, 78]. The GP often faces barriers when managing their patients at EOL making their central role in home-based care difficult. Reasons include unexpected hospitalisation contrary to home death as planned as a result of the carer not having sufficient resources and an inability to control unpleasant symptoms. As a result the GP is often bypassed and the patient is admitted to an acute hospital where EDs tend to perform acute resuscitation and transfer to general wards or intensive care units (ICUs) [7, 24, 26, 53, 68, 70, 77, 79–85].
The following definitions of end of life, end-of-life care and palliative care, are used throughout this position paper.(i)End-of-life. it is that part of life where a person is living with, and impaired by, an eventually fatal condition, even if the prognosis is ambiguous or unknown [42, 86].(ii)End-of-life care. EOL care combines the broad set of health and community services that care for the population at the end of their life. Quality end-of-life care is realised when strong networks exist between specialist palliative care providers, primary generalist providers, primary specialists, and support care providers and the community—working together to meet the needs of the people requiring care .(iii)Palliative care is specialist care provided for all people living with, and dying from an eventually fatal condition and for whom the primary goal is quality of life .
In this paper, we discuss the evidence around managing patients at the EOL in the ED setting, in particular some of the clinical, social, ethical, and economic aspects reported in the literature. We also define areas of research and policy development that have not been covered and suggest some potential courses of action.
2. Method of Review
We used MEDLINE and EMBASE databases and CareSearch palliative care filter for PubMed  to search for articles containing the key words described on Table 1. Articles were included if they described issues about “terminal care” or “end-of-life” and if they mentioned the “emergency department”; if they explored any “clinical”, “social”, “ethical”, or “economical” issues; or if they referenced “palliative care” or “intensive care”, “last year of life”, “death”, or “dying”. We also retrieved relevant grey literature on the topic such as strategic plans and unpublished commissioned research, editorials and policy documents, as well as instruments used in palliative and EOL care.
Of the 356 articles indicated on Table 1, 146 articles were rejected on the basis that they did not appear relevant after screening by title and abstract content. The remaining 210 articles were downloaded, printed, and reviewed for content and quality of evidence. Of these, 50 were excluded as they were not related to ED care. The remaining articles were then sorted using a descriptive thematic approach. We also used SCOPUS  to identity the number of citations associated with selected articles.
Of the 160 papers included in this study, most had low citation levels when compared with articles from the same journal on different topics. Some examples included a paper about a good death published in The Lancet with 244 citations, but in relation to other topics, the top 100 most cited articles published by that journal, during the same period, had over 1200 citations each . Another example is the case of two articles from a European study conducted across 174 EDs published by Intensive Care Medicine with 9 and 1 citations, respectively, while the top 100 most cited articles of this journal published in the same year had over 130 citations each [24, 25]. A further case is an Australian study auditing ED deaths published in 2009 by Emergency Medicine Australasia. This article had no citations while the top 50 articles of that journal on the same year of publication had over 10 citations each .
The same phenomena were noted across different journals regardless of their impact factor. The low citation rate can be explained partially by an expansion of the literature in recent years. Of the total documents in this review, 35% were published in 2010-2011; 33% were published in 2007–2009; 19% were published between 2000 and 2006; 13% were published between 1991 and 1999.
Overall, 6 articles (4%) had over 100 citations each [18, 19, 83, 91–93]; three articles (2%) had between 51 and 100 citations each [44, 94, 95]; 36 articles (22%) had between 10 and 50 citations each; 60 articles (37%) had between 1 and 9 citations each; 37 articles (23%) had no citations; 18 documents (12%) were not in Scopus or not applicable.
The thematic analysis identified six main topics of interest, namely, uncertainty of treatment in ED for patients at EOL, quality of life issues, costs, ethical and social issues, interaction between ED and other services, and strategies for out of hospital care.
3.1. Uncertainty of Treatment in the Emergency Department for Patients at EOL
O’Connor et al. indicated that in EDs, clinicians often play the role of commencing measures which might be judged to be futile in retrospect, and they argue that the ED environment could be an ideal place for difficult conversations, and difficult decisions regarding withholding of treatment . They also indicated that treatment uncertainty is difficult to measure as it is usually the result of attempting to reach a consensus. Medical futility has been defined both quantitatively by the probability of the success of a treatment and qualitatively by the perceived value in terms of quality of life .
Several articles confirmed that this might be the case in a number of elderly patients with underlying chronic conditions where they may receive active treatment knowing that they will either die in the ED or be admitted by hospital staff knowing that they would die in the near future [24–32]. Reasons for these actions have been associated with miscommunications between doctors and patients; carers and patients, and between health care staff, and lack of information or cultural factors [29, 31, 39, 94, 96, 97].
Prognostication based on symptom characteristics such as recurrent infections, weight loss, falls, and functional decline has been used in predicting end-stage disease [60, 98]. Specific symptoms of certain conditions such as ovarian carcinoma have specifically been associated with shorter survival times, namely, bone marrow depression, renal failure, and dyspnoea [99–101]. Validation studies related to basic life support have been conducted to identify patients with no probability of survival. One study found that following rules for the termination of basic life support had a positive predictive value for death of 99.5% and decreased the transfer of patients to hospital by 63% .
The review also found that the reliability of prognostic models by critical care specialists and ED physicians regarding impending mortality of patients with poor functional outcome is not consistent . In a six-month follow-up study, the reliability of prognosis had a low sensitivity of 35–37% suggesting that only one third of people with poor prognosis were likely to die. In addition, they had a very high specificity of 99% and positive predictive values of 96%, suggesting that most people expected to live survived (only 1% die when they were expected to live) [29, 31, 96, 102].
In summary, this review found that clinicians in the ED confront a major dilemma about uncertainty of treatment. The dilemma is whether an accurate prediction of appropriate active treatment is possible and whether decisions about a transition to palliation can be made [60, 96].
3.2. Quality of Life Issues
Optimising the quality of life of those with chronic life limiting illness is an important challenge. The International Council of Nursing (ICN) mandates that “nurses have a unique and primary responsibility for ensuring that individuals at the EOL experience a peaceful death” . As indicated before, the literature supports the notion that most deaths of patients at EOL do not comply with good death principles [14, 18, 73].
Wright et al. , demonstrated that patients with cancer who die in hospital ward or ICU are more likely to have worse quality of life compared with those who die at home, and their bereaved caregivers were more likely to develop psychiatric illness. They concluded that interventions aimed at decreasing terminal hospitalisations or increasing hospice utilisation may enhance patients’ quality of life at the EOL and minimise bereavement-related distress.
In relation to tools to improve quality of life, the literature has shown several strategies to inform patients’ wishes, choices, and treatment options as illness progresses and death approaches such as advanced care planning and other tools [1, 7, 21, 48, 74, 77, 103, 104]. These comprise models of care pathways and tools to facilitate the transition from active to palliative care [1, 7, 21, 48, 67, 103–108].
The best known is the Liverpool Care Pathway (LCP) [57, 109]. It focuses on three main areas of care: communication between staff about knowledge of the patient and their family’s wishes, improving the consistency of care while dying and after death, and improving the perceived quality of care given to the family.
It has been reported that the real challenge for ED physicians is to be certain of the appropriateness of placing patients on such pathways [52, 57, 67, 110]. A modified version of this instrument known as the Modified LCP was implemented and validated in the ED in the UK, to investigate its applicability in the ED environment . The authors found that it was possible to make it more relevant for the ED by shortening the pathway and administering medication in a way familiar to ED staff [52, 67].
There is also evidence that the skills required to manage patients with terminal conditions in the ED are different to those required to resuscitate and stabilise nonterminal ED patients [31, 36, 111]. Another factor reported in the literature affecting quality of life at the EOL is the increasing tendency to specialise in medicine [36, 39, 112]. The principles of traditional medical practice such as concentrating on optimising the function of the organ or area have been reported as inappropriate in most situations of EOL care [2, 23, 76, 113, 114].
The International Council of Nursing (ICN) estimates that more than 1000 million people by 2020 will be over the age of 60, and three quarters of all deaths will be caused by noncommunicable diseases worldwide . Health expenditure in the last years of life has confirmed that increased costs are associated with proximity to death. Many articles have confirmed that up to half of all medical costs are in the last 6–12 months of life [1, 4, 5, 36, 48, 51, 58, 73, 92, 115].
In a longitudinal study conducted across 59 nursing homes in Maryland, United States, between 1992 and 1995; it was found that residents who died during the 2-year study period had significantly greater mean rates of utilisation of all types of health care than residents who were not discharged from the nursing home, even when controlling for dementia, age, functional status, and number of comorbid conditions. Those who died within a month of admission had significantly more ED and medical visits than those who died after a longer stay. They concluded that the pattern of high healthcare utilisation before death was consistent with studies of the overall Medicare population that show an increase in Medicare expenditures in the period before death .
Unwanted and unnecessary hospitalisation is a contentious issue that is common amongst patients at EOL [36, 56, 79, 116–118]. Several papers have demonstrated that symptom control is often a legitimate reason for acute hospital admission [23, 36, 46, 48, 96, 103]. Acute problems in cancer patients are sepsis, respiratory obstruction, spinal cord compression, metabolic disturbances, gastrointestinal tract obstruction, and deep vein thrombosis . It has been reported that there is a difference between symptoms which are treated without reference to their cause and acute problems which need to be identified and then treated by the usual medical means .
However, hospitalisation involves expensive decisions; it has been estimated that average chemotherapy costs are approximately US$ 8,000 per month; an ICU bed costs almost US$4,000 per day; standard surgery costs US$5,000 per hour . It was estimated in 2002 that in the US alone 33% of those who die in hospital spent an average of 10 days in ICU and 80% preferred to die at home [36, 56, 116–118]. In general, between 45% and 70% of patients at EOL want to die at home but up to 70% die in acute hospitals [3, 46, 70, 79, 83].
Family caregivers currently provide a high proportion of home-based care at EOL; however, there is little information about estimating the full costs incurred by patients and their caregivers. Most economic analyses of home-based care are limited to measurement of publicly financed care [58, 119]. Despite the fact that a high proportion of care at EOL is provided by family caregivers, particularly in the home setting, time spent by these caregivers is often perceived as having no or minimal monetary value [42, 104, 119, 120]. In this context, care costs at EOL can be greatly underestimated. A framework including long-term as well as cost-effective alternatives is required from a societal perspective [4, 5, 104, 119].
3.4. Ethical and Social Issues
Ethical issues around EOL care have been recognised by emergency physicians [81, 121, 122] and paramedics  in many different settings in relation to cardiopulmonary resuscitation (CPR), palliative care programs and advance care directives (ACDs) [31, 47, 48, 53]. Euthanasia and the right to die have also been explored, in particular those aspects associated with dignified death, legislated resuscitation [70, 123], attitudes to death and the illusion of autonomy at the EOL [13, 123–126]. In this context, illusion of autonomy is understood as the decision of physicians to ignore patient preferences about life-sustaining care. Some research has also reported that health care professionals are able to make correct estimations of patients’ preferences but they are not always aware of their own bias .
There have been discussions about palliative care and pain control as a human right, as well as some legislated requirements for palliative care [72, 83, 126]. In relation to religion and spirituality, the ED environment provides limited privacy. It may not be conducive to enhancing the respect and comfort required by the grieving family and may limit communication with the family. The training of staff on spiritual issues is often inadequate and the role of chaplains, clerics, ethnic health workers, interpreters, and social workers may not be considered essential in the ED environment. The LCP has an item for calling a priest; however it is not always covered as LCP is basically a checklist which in principle should improve care of the immediately dying by making sure that the basics are covered but evidence-based information is limited [6, 10, 32, 128–133].
3.5. Interaction between ED and Other Health Services
The review has also found several articles describing the relationship between EDs, hospital services such as ICUs, hospital wards, ambulance services, and other community-based health services such as residential care facilities and GPs [12, 35, 39, 42, 48, 53, 113]. Most articles have indicated important problems in relation to communication and degree of preparedness for the death [6, 74, 83, 132, 134]. These include conflicts that may arise when there is pressure by treating clinicians and relatives to admit patients into ICUs, and unreal expectations of relatives or friends of patients clashing with the reality of dying and inappropriateness of further treatment [39, 55, 74].
To alleviate these problems, several alternatives have been proposed such as physicians’ orders and ACDs. These provide alternatives about life-sustaining treatments in the ED, especially for patients who are terminally ill and for those requiring treatment by emergency physicians who may not be familiar with the background to the patients’ illness [10, 37, 49, 53, 60, 95, 103, 135]. The International Society of Advance Care Planning and End of Life Care (ACPEL) has been formed recently to coordinate and promote alternative plans for patients at EOL . These plans would be advantageous to physicians in the ED if such patients had an ACD, preferably a combined proxy-treatment directive, and preferably one that has been thoroughly discussed with the family physician and with the proxy, successor proxies, and preferably relatives and friends [75, 76].
In relation to ambulance services, there have been examples where State laws in the US allow paramedics to follow Physician Orders for Life Sustaining Treatment (POLST) or Medical Orders for Life Sustaining Treatment (MOLST) forms limiting life-sustaining treatments such as CPR and intubation [7, 10, 39, 45, 72, 75]. Before admission to the ED, paramedics may experience conflict with terminally ill patients who would rather be managed at home. Paramedics are frequently called to attend terminally ill patients after a cardiac arrest . Situations such as this make management decisions in the ED difficult. Current regulations are a source of conflict between the paramedic’s duty to treat and the patient’s right to limit resuscitative efforts at the time of death [70, 137–139].
In the area of profound intellectual disability, there is often a need for chronic palliative care, with a formal documented and agreed decision that the goal of treatment is to “allow natural death” and not to continue with life prolonging procedures such as long-term percutaneous endoscopic gastrostomy feeding tubes. Who and when to make this decision can be a problem and communicating it in a binding way to those who may become involved in further health care can be complex [50, 71, 140]. The existence of ACDs should ideally be on the electronic medical record as an “alert”. However, relatives also need to have the ACD to show to staff unfamiliar with the patient.
Alternative palliative care services are needed in order to avoid ED admissions, including home-based pain relief and intensive nursing care and carer support. Caregivers need to know what to expect at the EOL . For many caregivers, dealing with a terminally ill patient is their first experience in witnessing an impending death, and often they are not given appropriate education or support [12, 116]. As a consequence, many of the normal body responses are interpreted as medical emergencies and result in unnecessary emergency room visits and frantic calls to health care providers [12, 78]. Community nurses in Australia usually provide these services, but in the ED, they are not available. For that reason, in the ED, counsellors or trained palliative care nurses and physicians may be helpful in ensuring that caregivers and their patients are aware of signs such as reduced appetite and cognitive dysfunction [3, 12, 73, 78, 95, 104, 128, 130, 135, 141–145].
3.6. Strategies for out of Hospital Care
Since the SUPPORT study in 1995, there have been landmark improvements around palliative care support for people with terminal conditions [83, 146]. Unfortunately these conditions are not reaching many people in EDs [31, 33].
The paradox is that while there is strong evidence suggesting that the majority of such patients do not want to die either in the ED, ICU or hospital ward, there is very limited information about strategies for out of hospital care in the ED [3, 70, 79, 142, 147, 148].
In general, between 45% and 70% of people have been reported to prefer dying at home, but between 60% and 86% die in acute hospitals [3, 36, 46, 70, 79, 83]. In the US alone 80% of those who die in hospital prefer to die at home. The reality is that most terminally ill patients are managed in institutions [4, 149, 150].
Several articles have reported that when patients are offered a choice between active management and active management together with out of hospital care, they would often choose the latter. Those patients tended to live longer and had a better quality of life [1, 3, 23, 62, 91, 93, 114].
In the case of GPs, it has been reported that hospitalisation can be avoided if home care for the dying was better supported with access to experts in palliation and improved communication within the health service [53, 77, 79].
A French medical emergency call centre responded to requests for emergency aid at the homes of terminally ill patients by sending to the patient’s home a nurse and a volunteer, both trained in hospice (terminal) care, together with a physician and the emergency ambulance team. When the patient wished to stay at home, the hospice team remained to support the patient and family and to provide comfort care until the crisis situation. This type of organisation was consistent with respect for the patient’s choice to remain at home until death. Prevention of unwanted hospitalisation can result in cost savings which can, in turn, be used to fund such a program [117, 151].
Do Not Resuscitate (DNR) orders and ACDs have been considered by family physicians and other medical professionals. However, it has been reported that ACDs have no legal force in some Australian states, and relatives can override them, just like with organ donation [70, 83, 152–155].
In relation to hospice care, in the United States, the term “hospice” generally refers to in-home care, hospices are not institutions, and hospice care is usually provided by nurses or volunteers with no specialist palliative care training or without the support of medical staff and often with no medical staff at all . In some settings, approximately 50% of terminally ill patients receive hospice home care services before death but the total population level is unknown [56, 102].
The literature has also identified some determinants of hospice home care use among terminally ill cancer patients including longer length of survival, perceived greater family ability to achieve preferred place of death, home as the realistic preferred place of death, being female, lower levels of functional dependency, and use of emergency care during the final days of life. Some authors have even indicated that it is often underutilised, despite the widespread availability of hospice services . Sometimes terminally ill cancer patients who may benefit from hospice care do not receive it, even when alternative care is available.
4. Summary and Conclusions
As patients approach EOL, their disease process may create an immediate life-threatening emergency normally requiring admission to an ED, yet further active treatment is futile. A large number of elderly patients at EOL die in the ED and many of them are admitted to hospital knowing that they are dying and that modern interventional medicine has little to offer [10, 24–26, 29, 30, 154].
As indicated at the beginning, the main purpose of EM is to treat undifferentiated patients across age and disease or injury spectra, to create a time-restricted assessment of the patient, to resuscitate and stabilise in order to establish initial or definitive treatment, and finally to discharge the patient to an appropriate facility [24–32]. As unravelled in this paper, these principles are not always possible to implement exactly as prescribed when managing patients facing EOL. Organising the most appropriate care for these patients can be time-consuming, requiring honest and timely prognostic information, clear recommendations, facilitating patient-family discussions, and affirming patient choices .
Following is a list of policy and practice recommendations and discussion of the need for further research derived from the findings of this review.
4.1. Better Prognostic Models
The reliability of estimating death for patients with poor functional outcomes is low [52, 57, 67, 102, 110]. Treatment futility is also difficult to prognosticate and is complicated by variation of what may be perceived as an acceptable probability of success but an unacceptable level of quality of life or vice versa [31, 96]. More precise instruments with higher sensitivity to assess EOL timelines in the ED are needed. That knowledge could be used to offer a timely transition from active treatment to palliative care with the suspension of futile care in the ED.
4.2. Specialised Training
Knowing when to shift from life-prolonging treatment to palliative approaches, and focusing on quality of life and comfort, is emotionally challenging for patients, families, and physicians. Most practitioners in emergency medicine are not trained to recognise and manage patients at the EOL. Increased training among ED clinicians in communication about goals of care and EOL care is therefore required urgently. Simulation training can be used to improve EOL management skills of ED clinicians.
4.3. A Structured Approach to Decision Making
Most elderly patients have multiple problems and comorbidities resulting in “committee” medicine with little leadership or coordination to initiate discussions about the value of continuing conventional medicine and changing the care to support the dying process [2, 39, 113, 156]. A structured approach to decision making with clear steps similar to an LCP but adapted to ED is needed. It should include prognosis; risk-benefit analysis of proposed interventions taking into account current symptom burden as well as patient’s age, life stage, and goals of care; exploring and arranging appropriate palliative care if needed; making clear recommendations; and taking steps to ensure that appropriate support is provided to patients and their families.
4.4. Infrastructure, Information, and Planning Ahead
Lack of information and planning for a home death are associated with the absence of action plans for anticipated symptoms and deteriorations and the inability to alter management at short notice and the underrecognition that a patient is “palliative” and active ED care for him or her might not be appropriate. These issues have been identified in multiple policy documents [1, 15, 16, 21, 41–43, 46–48, 73, 86, 110, 112]. Equally important is creating sustainable strategies for out of hospital care [45, 46, 51, 62, 91, 116, 157–162].
4.5. Evidence-Based Research about EOL Care in the ED
There are few studies exploring interventions at the EOL across different settings, including the ED [24, 25, 83]. As indicated in the results, most of the studies included in this paper have received less citation than other topics when compared across journals. This was consistent across journals of different impact factors. That suggests that EOL research has received less attention amongst researchers and practitioners relative to other topics published in the same journals. In general we found that the level of citation in this area of research is comparatively low. Only 28% of the articles had more than 10 citations each and 60% had less than 9 citations each.
This can be partially explained by an expansion of the literature in recent years given that 35% of the articles were published in the last 24 months. However, in spite of this reason, the low citation rate is a cause for concern; EOL research might still not be receiving the appropriate attention it requires. Sixty-two percent of the articles were published after 2000 and 13% were published between 1991 and 1999. Only the SUPPORT study has received a high number of citations (1704) since 1995 . Other 5 studies have also good citation levels [18, 19, 83, 91–93] but the large majority have had low citation numbers.
Furthermore, the patterns of life, disease, dying, and death have changed dramatically in recent years across the world [1, 21, 47, 74], and research is essential to develop evidence-based public health policy. Further research should include evaluation of pathways for the appropriate care of terminally patients in the ED (such as the LCP), comparison of services across countries such as the UK where GPs are required to do home visits on sick people and are financially penalised for hospital admissions and Australia, where this is not the case. Finally, we support the identification of robust rules for patients receiving inappropriate advanced life support care.
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