Symptom Management in Patients with Stage 5 CKD Opting for Conservative Management

Chronic kidney disease (CKD) stages 3–5 now affects 8.5% of adults in the United Kingdom; with 4% of patients expected to reach stage 5 CKD. Increasing numbers of older patients are contributing to the growth of demand of kidney services. With the exception of transplantation, dialysis has been the main form of renal replacement therapy (RRT) for advanced CKD. This elderly population is usually too frail and has many other co-existing medical complaints or co morbidities to undergo transplantation. Dialysis is an invasive treatment, and some frail elderly patients can experience many dialysis related symptoms. An alternative option for these patients is to choose conservative management (CM) of their stage 5 CKD. These patients often have complex supportive and palliative care needs. The frequency, severity and distress caused by symptoms related to stage 5 CKD are often under recognized and under treated. There is a need for early identification and management of symptoms as they present in patients with stage 5 CKD being managed conservatively. Symptom assessment should be focused on anticipating, identifying and alleviating any symptoms. This needs to be incorporated into the regular practice of those managing CM patients.


Introduction
Stage 3-5 chronic kidney disease (CKD) is common and now affects 8.5% of the UK adult population [1]. Stage 3-5 with disproportionate numbers of older patients contributing to this increase [2,3]. Diabetic kidney disease is the single most common cause of renal failure and accounts for 24% of patients with chronic kidney disease (CKD) in the UK [4]. The National Institute of clinical excellence (NICE) recommend that people with CKD stage 4 and 5 are referred for specialist assessment by a nephrologist. Stages 1-3 can usually be managed by General Practitioners (GP's) [5]. CKD is often associated with other medical conditions, such as heart disease and diabetes. There is an increased risk of mortality in patients who have advanced CKD.
The lack of specific symptoms can result in people with CKD not being diagnosed or diagnosed when they have advanced stages of CKD. Approximately one third of patients who have the advanced stages of kidney disease have a late referral to kidney services which is associated with an increase in mortality and morbidity [5]. Strategies aimed at early identification of CKD and where possible, preventing the progression to advanced kidney disease are therefore clearly needed [5].
Although renal replacement therapy (RRT) has transformed prognosis of kidney disease, quality of life remains impaired by the disease and there is a significant treatment burden associated with dialysis [6].
Invasive surgical procedures related to haemodialysis access are often required, and each haemodialysis session lasts 4 hours three times per week for the rest of the patient's life unless a kidney transplant is received.
Peritoneal dialysis (PD) could be seen as a valid treatment option in frail elderly patients as they do not need to travel to haemodialysis units three times per week. Some centers offer an assisted PD service for those patients who have dexterity or cognitive problems impeding their ability to carry out the dialysis. It has however, been suggested that this can have a negative impact on the patient's family and/or care givers. There is also an increased risk of peritonitis in addition to social isolation as this is a home based therapy [7].
Some recent studies demonstrate the survival on dialysis of this group may be very poor. Treatment has a negative impact on quality of life. Evidence remains sparse [8], however, recently there is growing evidence that dialysis may not prolong life in the elderly with poor functional status and multiple co-morbidities [9][10][11].
Over 2% of the total National Health Service (NHS) budget is spent on RRT [5].The impact of the global recession and the massive public debt in the UK cannot be ignored in the provision of health care today. The NHS continues to face the challenges of austerity and funding cuts. The view is that the NHS will be under continued pressure to provide service improvements with no extra funding over the next five years. Even with continuing improvements in CKD screening services, earlier referral of patients with advanced CKD and where appropriate, provision of supportive care in place of RRT for patients with stage 5 CKD with significant co morbidity, it is believed that the prevalence of RRT will continue to increase [12].

Conservative Management
An alternative choice for these patients is the option of Conservative Management (CM) in stage 5 CKD. CM refers to management without dialysis which includes active management of the kidney disease to slow further deterioration of kidney function and to minimize complications of the kidney disease [9].
As symptoms escalate and the end of life is closer, some symptoms can be difficult to manage such as fluid overload and lethargy. Patients with stage 5 CKD managed conservatively have significant symptom control needs, similar to those of patients with advanced cancer [8].Kidney service providers have developed innovative services by integrating specialist palliative care and nephrology care, and promoting collaborative working across the two specialties. A central aim of these services is the appropriate management of symptoms as the patient managed without dialysis ultimately deteriorates over time.
Some studies have been carried out to attempt to measure the prevalence and severity of symptoms experienced in CM patients. One study completed a cross-sectional survey of these patients to identify the prevalence and severity of symptoms experienced by CM patients [8]. This study used the Memorial Symptom Assessment Scale Short Form (MSAS-SF) with additional kidney specific symptoms added to the tool. Sixty six patients were recruited and symptoms were reported in more than 33% of the patients. The mean number of symptoms present being 11.58 per patient and included lack of energy, fatigue, pruritus, dyspnea, pain, dry mouth and muscle cramps. Other symptoms identified were sleep disturbances, poor concentration, constipation and nausea. Patients with stage 5 CKD managed conservatively have multiple and significant symptom control needs.
CM patients experience many associated symptoms which can have a negative impact on their well-being and may also carry a heavy symptom burden from other medical conditions such as heart failure or diabetes. Early intervention with medications aimed at treating these symptoms is advisable.
Staff caring for patients with CKD should have to the necessary skills and knowledge to identify symptoms early. They will then need to implement an agreed plan with the patient. This should include where applicable: Prescribing any recommended medications with the aim to arrest or slow any further rate of decline in kidney function and effectively manage the symptoms associated with stage 5 CKD.
As kidney function declines, sodium retention and extra-cellular volume expansion lead to hypertension, and peripheral and pulmonary oedema. Extra circulating fluid increases the amount of fluid in the blood vessels and increases the BP. Diuretics in stage 5 CKD are used to reduce fluid accumulation in both the intracellular and extracellular spaces. Peripheral and pulmonary oedema becomes more problematic when the eGFR falls to less than 10-15 mls/min. It can be difficult to estimate when a patient is approaching the end of life. A thorough assessment of the patient's condition and prescribing of medications should be carried out by a senior clinician. All patients approaching the end of life should be prescribed 'as required' medications in case they develop symptoms commonly experienced at the end of life; This is defined as anticipatory prescribing. Common symptoms include; pain, terminal restlessness/agitation; and the effect of secretions in the airway.
The Liverpool care pathway (LCP) has now been phased out following an independent government review in 2013 [12]. This was then followed by the publication of the five priorities of care report in 2014 [13]. This report identifies that caring for people who are approaching the end of their life demands compassion, kindness and a skilled application of knowledge. This publication also set out duties and responsibilities of healthcare providers and all NHS Trusts were required to generate individualised care plans to include these priorities. Table 1 [13] below outlines these priorities of care to include anticipatory prescribing recommendations in Table 2 [14] to improve symptoms management. Priority 1: Recognise: Clinical teams should recognise the possibility that patient may die in the coming days or hours and this is clearly communicated. This communication should include any decisions made and actions taken in accordance with the person's needs and wishes. These should be reviewed regularly and updated accordingly. Priority 2 : Communicate: Ensure that sensitive communication takes place between staff and the patient and those people that are important to them, such as family, spouse, friends Priority 3: Involve: Ensure that the patient, and those more important to them, such as family, spouse, friends, are involved in all decisions about treatment and care to the extent that they want to be Priority 4: Support: Ensure that the needs of the patients' families and others are identified as important to the patient are actively sought, respected and met as far as possible Priority 5: Plan and Do: Agree, co-ordinate and deliver an individualised care plan with the patient, which includes food and drink, symptoms control and psychological, social and spiritual support Table 2. Anticipatory prescribing recommendations [14]. These should be prescribed for all patients except in cases of known allergy to the above In the absence of the LCP each practitioner should refer to local protocols and liaise with palliative care teams for any specialist advice [12].
The palliative care team at an acute London Trust has developed the local symptom control guidance for dying patients. This protocol [14] includes anticipatory 'as required' prescribing to manage pain; agitation; respiratory secretions; nausea/vomiting; breathlessness.

•
For those already on background oral opioids but unable to swallow, convert to a continuous subcutaneous syringe driver infusion (the use of which must be thoroughly discussed with patients and their families) using Table 3 below: 1st Line, Midazolam 10-30 mg SC/24 h via syringe driver PLUS 2.5 mg-5 mg SC prn. • 2nd Line, Levomepromazine 12.5-50 mg via syringe driver PLUS 1.5 mg prn and contact the palliative care team.

Respiratory Secretions
Management: Table 4 below recommends medications to manage the respiratory secretions in those patients approaching the end of life:

•
The noise is often distressing for the patient's family-reassure them that the secretions are not distressing the patient. • Reposition patient and stop parenteral fluids-if unsuccessful consider drug treatment.

Nutrition and Hydration
• Oral hydration and nutrition should continue to be offered as tolerated.

•
Risk feeding, where there is a risk of aspiration, is appropriate if the patient wishes/appears to enjoy it. • Parenteral support may be considered where clinically appropriate.

•
Always discuss plans where possible with the patient, and family, and clearly documented.
Further advice on symptoms management can be also accessed from www.Kidneysupportive. care.org [15].
The National Service Framework for Renal Services [16] highlights the need for appropriate end-of-life care for kidney patients and the recommends collaborative working between the kidney multi-professional teams, primary care and other services The End-of-life care Strategy [17] has stressed the importance of education, training and continuing professional development for staff.
An example of a successful collaborative working model is the development a joint CM/Palliative Care nurse led clinic. This model has been recognized as being extremely helpful in bridging any knowledge deficit between kidney and palliative care specialist nurses and allowing an integrated approach to delivering palliative and supportive care. The study's limitations however, are that only small numbers of patients were surveyed and the feedback was informally received. [18,19].
This has allowed CM patients with complex health and social care needs to be reviewed by a CKD clinical nurse specialist (CNS) and a palliative care CNS. This has allowed improved access to specialist palliative care advice regarding symptom management. It has also been an excellent learning opportunity for the CKD CNS' to improve their skills and knowledge of prescribing symptom relief medications for this group of patients. It is of great importance that healthcare teams caring for patients approaching end of life have the expertise to support this group and education opportunities should be commissioned by providers as a matter of priority.

Conclusions
Many kidney units are experiencing an increase in the number of frail elderly patient to their service. This can present both challenges and opportunities for renal specialist nurses. These patients may opt to follow a supportive and palliative care pathway and can carry a symptom burden similar to that of cancer patients. It is extremely important that chronic kidney disease specialist nurses can access education and continuing professional development and develop skills in identifying and treating these symptoms. Collaborative working with palliative care teams can provide an excellent learning opportunity for chronic kidney disease specialist nurses in developing the necessary competence and confidence in managing this often complex group of patients. Services should be further developed to ensure we can be responsive to this growing cohort of patients. Care planning should involve healthcare providers across both primary, secondary and community teams to ensure the patient's management plan is contemporaneous and clearly documented.

Conflicts of Interest:
The author declares no conflict of interest.