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Julian Hughes is a consultant in old age psychiatry in Northumbria Healthcare NHS Trust (Ash Court, North Tyneside General Hospital, Rake Lane, North Shields, Tyne and Wear NE29 8NH, UK. Email: j.c.hughes{at}ncl.ac.uk) and an honorary clinical senior lecturer at the Institute for Ageing and Health, Newcastle University. His interests are in the philosophy of ageing and psychiatric ethics. David Jolley is honorary reader in old age psychiatry, Manchester University, and part-time consultant psychiatrist at the Pennine Care NHS Trust. A pioneer of services for older people, his interest spans the field of clinical psychiatry of late life. Alice Jordan is a specialist registrar in palliative medicine. She currently holds a research and teaching fellowship to undertake work towards an MD thesis entitled The assessment of good practice in pain management in advanced dementia: a pilot study. Elizabeth Sampson is an old age psychiatrist and MRC Research Fellow, based at University College, London. Her principle research interests are in improving end-of-life care for people with dementia, particularly those on acute hospital wards, delirium and liaison psychiatry for older people.
| Abstract |
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| What is palliative care? |
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an approach that improves the quality of life of patients and their families facing the problems associated with life-threatening illness, through the prevention and relief of suffering by means of early identification and impeccable assessment and treatment of pain and other problems, physical, psychosocial and spiritual (World Health Organization, 2002).
However, a difficult problem emerges in the context of dementia since it is often not seen as a life-threatening illness. Palliative care can be regarded as a spectrum (Addington-Hall, 1998). At one end, the palliative care approach equates to good-quality, person-centred dementia care. At the other, the terminal stages of dementia may well require specialist palliative care (involving more detailed knowledge and skills, for example in pain relief).
In between, palliative interventions (which in cancer care could involve palliative radiotherapy for bone pain) might comprise the raft of pharmacological and psychosocial approaches used to treat the behavioural and psychological signs of dementia.
One conceptual and practical issue concerns whether these potential components of care in dementia can (and should) be usefully packaged together under the umbrella of palliative care. A reasonable response might be that if conceptual packaging in this way leads to improvements in patient care, perhaps through advance care planning, then the enterprise would seem worthwhile.
| Is there a need for improved palliative care in dementia? |
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In a retrospective survey of carers in England, McCarthy et al(1997) reported a host of common symptoms and signs experienced by people with dementia in the last year of life: confusion (83%), urinary incontinence (72%), pain (64%), low mood (61%), constipation (59%) and loss of appetite (57%). The study found similar frequencies of such symptoms in cancer patients, but people with dementia experienced the symptoms for longer. Out of 170 people with dementia in the same study, none had died in a hospice. In a study of presenile dementia, the proportion of people dying in their own home decreased from 25% in 198591 to 15% in 199298; the proportion dying in residential or nursing homes increased from 14 to 32% during the same period (Kay et al, 2000).
Given the evidence of inadequate levels of care in both long-term institutions and hospitals, and given that people with dementia do not seem to gain access to specialist palliative care services, the implication is that there are needs for palliative care particularly in the last year of life that are not being met.
| Efficacy of palliative care in dementia |
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The relative paucity of good-quality evidence can be excused because of the difficulty of the task. The lack of effect in the study of Ahronheim et al(2000) was blamed on uncertainties over prognosis and the difficulties involved in altering care plans already instituted by a medical team. There is a more general problem about how to assess outcomes in end-of-life care in people with dementia.
Much of the research comes from the USA. In particular, Ladislav Volicers group in Boston have been able to build up a picture of how a hospice or palliative care approach might be useful in a special care unit for dementia (Volicer & Hurley, 1998). This has largely been achieved by showing benefits in particular areas (e.g. the management of fever or discomfort) and it may be that research needs to be more focused to show greater efficacy. The possibility remains, therefore, that palliative care can be provided in innovative ways with discernible benefits for people with dementia and their carers, despite the current dearth of evidence. For instance, again in the USA, Shega et al(2003) described in a preliminary report how community support from an early stage was helpful for pain control and complying with patients wishes and choice of place of death. These results suggest that there is likely to be a variety of ways to provide palliative care to people with dementia, from specialist long-term care units to community support (Hughes et al, 2005). Furthermore, there needs to be methodologically rigorous research to support such developments.
| Predicting death in dementia |
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In the UK, the precise prediction of death in dementia is less of an issue but there is still the need to discuss matters with families. The timing of such discussions will be a matter of clinical judgement. For instance, some people with dementia might wish to make advance decisions about palliative care and where they wish to die soon after diagnosis. Where such discussions have not taken place at an early stage, prognostic indicators might be a useful way to prompt appropriate conversations (Coventry et al, 2005).
| Physical health in advanced dementia |
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Similarly, both bladder and bowel function are compromised in advanced dementia. Incontinence of urine is common, which itself threatens skin integrity, causing discomfort. Advice from a continence specialist will often be helpful. Constipation, which can sometimes lead to impaction or overflow incontinence, can occur when the diet or fluid intake are poor, or when medication slows bowel transit times. Immobility and reduced awareness of the call to stool make matters worse. Constipation itself impedes bladder function. Discomfort, pain or toxicity can follow. The person may become more confused or more agitated. A common sign of constipation is the tendency to lean to the side. Vigilance and prophylaxis, with good nursing observations and medical review, will help to avoid the worst consequences of both incontinence and constipation (Regnard & Huntley, 2006).
Pain
There is considerable concern that people with severe dementia might be in pain that is neither detected nor adequately treated. Several large studies have suggested that pain is common in older people generally. Ferrell et al(1990) found that 71% of 92 nursing home residents had pain some of the time, 47% had intermittent pain and 24% reported of constant pain. Only 15% of those with pain had received analgesic medication in the previous 24 h. The mean score on the Mini-Mental State Examination (MMSE) was 20.7. In a study of almost 50 000 nursing home residents, over 25% had daily pain, of whom 25% received no analgesia (Won et al, 1999). However, people with moderately severe cognitive impairment (equivalent to a MMSE score of less than 19) and those with moderate to severe communication difficulties were excluded.
Ferrell et al(1995) studied 217 nursing home residents with frank dementia (mean MMSE score 12.1, s.d. = 7.9) and found that 62% complained of pain. Excluded from the study, however, were 70 residents with whom communication was too difficult. In a retrospective case-note audit of people with dementia, Lloyd-Williams (1996) found pain and breathlessness to be the most common symptoms, which were variably palliated.
There is some evidence that clinicians do not always recognise pain in people with dementia (Cook et al, 1999) or that they under-treat it. Morrison & Siu (2000a), in a prospective cohort study of older people following hip fractures, concluded that those who were unable to report their pain received less analgesia. The most potentially disturbing finding was that those without cognitive impairment received three times the amount of opioid analgesia than those with advanced dementia. Feldt et al(1998) had similarly found that people with cognitive impairment received less analgesia post-operatively. Closs et al (2004a) reported similar findings in nursing homes in Leeds, where the mean MMSE score was 15 (s.d. = 9). One possibility, however, is that pain might be perceived differently in dementia (Scherder et al, 2003, 2005).
These findings have led to a growth of interest in pain assessment tools. Self-report scales have proved useful in people with mild to moderate dementia who can still communicate (Closs et al, 2004b). For severe dementia there are now numerous observational scales, but two recent reviews have cast doubt on the robustness of their psychometric properties (Herr et al, 2006; Zwakhalen et al, 2006). Observational pain tools might pick up not only pain but also distress, of which pain might be just one cause (Regnard et al, 2007). The relationship between pain, distress, agitation and other behavioural and psychological signs of dementia needs to be carefully considered (Cipher & Clifford, 2004). It is difficult to be certain about the true prevalence of pain because of intrinsic problems with the assessment of pain in people with severe dementia.
The WHOs pain relief ladder is a useful way to guide treatment (World Health Organization, 2006). It suggests stepped care (Fig. 1
) from non-opioid drugs (e.g. paracetamol or non-steroidal anti-inflammatory drugs) to weak and then strong opioids, with adjuvant analgesics (e.g. neuropathic agents or psychotropic medication) being added at any step (Regnard & Huntley, 2006). Given the real possibility of side-effects, non-pharmacological therapies, from heat or massage to transcutaneous electrical nerve stimulation or acupuncture, might also be tried. There is evidence that such a stepped care approach can be effective (Lloyd-Williams & Payne, 2002).
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However, van der Steen et al (2002a) found that there was more discomfort in a group of people with dementia and pneumonia in whom antibiotics were withheld than in those treated with antibiotics. However, the same patients had higher rates of discomfort before the pneumonia and peak rates of discomfort were observed at baseline. Discomfort also seemed to be higher shortly before death when pneumonia was the final cause of death than when death had another cause. This might belie the notion that pneumonia is the old mans friend. Breathing problems were noted to be the most prominent signs. This would be predictable in pneumonia and raises two issues: first, the importance of a more global assessment of distress; second, the possibility that treatment other than antibiotics might have been beneficial (e.g. opiates to ease breathlessness).
The upshot is that the efficacy of antibiotics needs to be judged in individual specific circumstances taking into account the severity of the dementia, comorbidity, immobility, nutritional status and the persons response to the infection. In other branches of palliative care, antibiotics are sometimes used in a specifically palliative manner to ease the distress caused by infected bronchial secretions (Clayton et al, 2003). A study from The Netherlands of 706 patients suggests that physicians tend to treat most pneumonias with antibiotics: 69% with curative intent and 8% for palliative reasons (van der Steen et al, 2002b). In the 23% where antibiotic treatment was withheld, the patients tended to have more severe dementia, more severe pneumonia, poorer food and fluid intake and were more often dehydrated. When patients are thus very close to death a natural concern is that antibiotics might simply delay death but leave the patient open to further suffering from decubitus ulcers or other consequences of very advanced inanition.
Artificial nutrition and hydration
Several things happen to a persons feeding as dementia worsens. First, just as it is common for appetite and the enjoyment of food to be reduced in terminal conditions, so too in dementia there is a loss of appetite, a loss of the experience of hunger and of the need for a routine of regular meals (Watson & Deary, 1997; Ikeda et al, 2002). Second, there can be dyspraxic and sequencing problems that cause difficulties with the process of feeding. Third, swallowing problems become increasingly noticeable. Aspiration pneumonia becomes a concern in the more severe stages of the condition (Feinberg et al, 1992). It is particularly with this risk in mind that attention turns to the potential use of nasogastric and percutaneous endoscopic gastrostomy (PEG) tubes.
A review of the evidence, however, found no relevant randomised clinical trials comparing tube feeding and oral feeding (Finucane et al, 1999). On the basis of the available evidence the use of tube feeding in dementia did not seem to be supported. There was no good evidence to suggest that tube feeding prevented aspiration pneumonia, malnutrition, or pressure ulcers, that it reduced the risk of other infections, or that it improved survival, functional status or comfort (see Box 1
).
Box 1 Review of evidence of tube feeding in patients with advanced dementia (Finucane et al, 1999)
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Indeed, the review pointed to a number of adverse effects associated with tube feeding. The most common, paradoxically, is aspiration pneumonia. In addition, peri-operative mortality rates for PEG placement are between 6 and 24% (Finucane et al, 1999). Furthermore, survival analysis of patients with dementia who are given a PEG tube suggest that 30-day mortality varies between 9.5 and 54% and 1-year mortality between 39 and 90% (Sanders et al, 2004). A commentary on the ethics of tube feeding in dementia (Gillick, 2000) suggested that, other than in special situations (e.g. where the dysphagia is likely to be a temporary phenomenon caused by something other than the general progression of the dementia), tube feeding should not be used routinely.
An opposing view, given that the results to date are based on frail people with advanced disease, might be that PEG tubes should be used sooner in dementia in order to maintain the persons nutritional state. However, there are no data to support such a view.
Recent research continues to support the more conservative approach (Alvarez-Fernández et al, 2005). In a study of 52 elderly nursing home residents in Australia who were cognitively intact (Low et al, 2003), using a hypothetical scenario, 69% would not agree to nasogastric tube feeding (P < 0.05) and 71% would not agree to PEG feeding (P < 0.001). Most (75%) of the respondents would agree to a modified diet (P < 0.0001) and to oral feeding despite the risk of aspiration (59.6%, P < 0.01). There is some evidence that a palliative approach and the use of advance directives can decrease the reliance on tube feeding (Monteleoni & Clark, 2004). Fortunately, PEG feeding is not so common in dementia in the UK. The emphasis should therefore be on conservative management of dysphagia following expert assessment (usually by a speech and language therapist) using food thickeners, with appropriate posture and careful feeding techniques. Local protocols for the training of staff can be helpful (Summersall & Wight, 2006). As in the case of antibiotic use, the individuals particular medical state, the course of the dementia and judgements about quality of life seem to be more important to doctors in making such decisions, which are made on the broadest possible base and should include the family (The et al, 2002).
Resuscitation
In severe dementia cardiopulmonary resuscitation (CPR) is unlikely to be successful. Outside hospital the chances of survival are low and CPR itself may be harmful and undignified (Awoke et al, 1992; Conroy et al, 2006). Even with the benefits of being in hospital, CPR is three times less likely to be successful in people with cognitive impairment than in those who are cognitively intact. The success rate is similar to that found in people with metastatic cancer (Ebell et al, 1998).
These facts lead to some difficult decisions. The issue of CPR is often discussed with the relatives of people with severe dementia, especially within National Health Service settings where the default position is usually that CPR must be undertaken unless it is clearly documented that it should not. Since a person with dementia normally lacks the capacity to make a decision, clinicians must act in the persons best interests (Box 2
). The process of assessing best interests involves talking with those near to the person, both informal family carers and formal care staff. Differences between or within the various groups involved reflecting different knowledge, experience and background beliefs can be difficult to acknowledge and deal with, but must be faced. The aim of capacity legislation is, in part, to provide a process for dealing with such disagreements.
| Box 2 Process to assess best interests derived from the Mental Capacity Act 2005 The following must be considered, insofar as this is reasonable and practicable:
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Against this, it has been argued that CPR should not be the default position in units looking after people with severe dementia, because it is likely to be futile and there should be no obligation on clinicians to provide futile and burdensome treatments. Moreover, if this were true, there should certainly be no obligation to hold discussions, which might themselves be burdensome, with relatives about treatments that would not be given (Regnard & Randall, 2005). However, the hazards and concerns associated with having different resuscitation policies in different units has to be acknowledged. In addition, if families (or people with dementia) wish to discuss the prognosis and how things might go, clinicians would have to discuss what might or might not occur, including treatments that for good palliative reasons might not be given.
| Families and carers |
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The practical implications are that families and informal carers require a good deal of extra support during the advanced stages of the disease. This should include not only social support (Almberg et al, 2000) but also support in facing the prospect of death (Albinsson & Strang, 2002). Advance care planning is a way of raising some of the difficult issues that need to be faced while at the same time potentially decreasing futile or burdensome interventions (Hertogh, 2006). Open discussion of these issues to clear up concerns and misconceptions will usually be helpful, especially if families need to clarify their roles and responsibilities once the person with dementia is in long-term care (Caron et al, 2005).
| Psychological, social and spiritual needs |
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The psychological care of people with severe dementia must not be abandoned. When individuals with dementia become immobile, aphasic and totally dependent, it is sometimes said that they only require physical nursing. This can even be used as a reason to move a patient from a psychiatry unit to a general nursing unit in the severe stages of the disease. Such moves may be justified on other grounds, but it should not be presumed that skilled psychological approaches become wholly irrelevant. Communication remains possible and in the right hands might produce benefits (Killick & Allan, 2001). The possibility of lucid moments of conversation remains open (Normann et al, 2002). Even talk of social death needs to be circumspect, because it is not at all clear neither empirically nor conceptually that the person or the self has died before his or her biological death (Aquilina & Hughes, 2006). At one level this means that even in severe dementia the possibility of emotional distress (maybe even frank depression or psychosis) must be considered and treated effectively (Ballard et al, 2001b). At another level it means that attempts to facilitate communication and understanding should be pursued into the severer stages of the disease (Sabat, 2001).
In addition to the social support and financial advice that carers require, there needs to be greater consideration given to the prior wishes of people with dementia concerning their social care. McCarthy et al(1997) reported that 41% of the people with dementia died in nursing or residential care. Among those with presenile dementia in England, between 1985 and 1998 the proportion dying in hospital was about 56% (Kay et al, 2000). In another English study (Keene et al, 2001), which followed 91 people with dementia living at home when recruited, at the last interview before death 40% were still living at home, 44% were permanently living in a nursing home and 17% were living in hospital; between the last interview and death a further 14 (15%) had entered an institution permanently (i.e. almost 76% were institutionalised before death). However, most of us would prefer to die in our homes if possible. The fact that this still seems a long way off in the UK is a point that needs a good deal more consideration. There may be reasons why the persons preferred place of death is simply not practicable: perhaps he or she is living alone or with another frail or disabled partner. However, in large measure the issues are planning, resources and will.
If people with dementia have discussed their preferred place of care at an early stage, along with attendant possible practical problems, it is more likely that supportive services could be planned in advance. But the crucial step is that attention should be paid to the wishes of the person with dementia. In the UK the process of ensuring that all people die as they would wish has been encouraged by the adoption of the Gold Standards Framework (GSF; Thomas, 2003), the Liverpool Care Pathway (Ellershaw & Wilkinson, 2003) and the Preferred Place of Care Plan (http://www.cancerlancashire.org.uk/ppc.html). There is no reason to suppose that similar frameworks and pathways might not work in dementia care (see National Institute for Health and Clinical Excellence & Social Care Institute for Excellence, 2006). In individual cases it is possible to provide enough resources to support a persons wish to stay at home, but this often depends on a good deal of determination on the part of the carer. The local services, from the general practitioner to the specialist team (e.g. both old age psychiatry and palliative care), must be willing to provide support.
The personal dimensions of spirituality and faith have tended to be ignored by medical practitioners. Palliative care has helped to lead a returning awareness and respect for such issues (Speck et al, 2004). People with mental health problems are also concerned with spirituality and are responsive to the attributes of faith (Dein, 2004). Spiritual perspectives help to illuminate the nature of personhood in dementia (Allen & Coleman, 2006). Many people have religious beliefs that can be helpful to the way they experience dementia (Davis, 1989). People with dementia and their carers seem to benefit from spiritual support (Dinning, 2006). Furthermore, the emphasis on the spiritual dimension helps to bring out the extent to which a condition such as dementia, and our approach to it, must be broader than suggested by the narrowness of a purely biomedical model (Downs et al, 2006). Dementia can raise deep, existential issues to do with our lives and relationships, so the possibility of spiritual advice and support should be open to all.
| Conclusions |
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| Declaration of interest |
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| References |
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