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CMDT 2013
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Palliative Care & Pain Management Michael W. Rabow, MD Steven Z. Pantilat, MD
Definition & Scope of Palliative Care
The focus of palliative care is to improve symptoms and quality of life at any stage of illness, utilizing the expertise of an interdisciplinary team. At the end of life, palliative care often becomes the only focus of care, but palliative care alongside cure-focused treatment is beneficial throughout the course of serious chronic and terminal illnesses, regardless of prognosis, whether the goal is to cure disease or manage chronic illness. The World Health Organization defines palliative care as “an approach that improves the quality of life of patients and their families facing the problem associated with lifethreatening 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.” Palliative care commonly involves management of pain and other symptoms, including dyspnea, nausea and vomiting, constipation, and agitation; emotional distress, such as depression, anxiety, and interpersonal strain; and existential distress, such as spiritual crisis. While palliative care has been recognized formally as a medical subspecialty by the American Board of Medical Specialties and palliative care experts are increasingly available in hospital and outpatient settings, all clinicians should possess the basic skills to be able to manage pain; treat dyspnea; identify possible depression; communicate about important issues, such as prognosis and patient preferences for care; and help address spiritual distress. In 2011, the Joint Commission began offering advanced certification in palliative care to hospitals providing high quality palliative services. Symptoms that cause significant suffering are a medical emergency that should be managed aggressively with frequent elicitation, continuous reassessment, and individualized treatment. While patients at the end of life may experience a host of distressing symptoms, pain, dyspnea, and delirium are among the most feared and burdensome. The palliation of these common symptoms is described later in this chapter. The principles of palliative care dictate that properly informed patients or their surrogates may decide to pursue aggressive symptom relief at the end of life even if, as a known but unintended consequence,
the treatments preclude further unwanted curative interventions or even hasten death. There is a growing awareness and data from a randomized trial that scrupulous symptom control for patients with end-stage illness may even prolong life. Bakitas M et al. Effects of a palliative care intervention on clinical outcomes in patients with advanced cancer: the Project ENABLE II randomized controlled trial. JAMA. 2009 Aug 19;302(7):741–9. [PMID: 19690306] El-Jawahri A et al. Does palliative care improve outcomes for patients with incurable illness? A review of the evidence. J Support Oncol. 2011 May–Jun;9(3):87–94. [PMID: 21702398] Temel JS et al. Early palliative care for patients with metastatic non-small-cell lung cancer. N Engl J Med. 2010 Aug 19;363(8):733–42. [PMID: 20818875]
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Pain Management
Principles of Pain Management The experience of pain includes the patient’s emotional reaction to it and is influenced by many factors, including the patient’s prior experiences with pain, meaning given to the pain, emotional stresses, and family and cultural influences. Pain is a subjective phenomenon, and clinicians cannot reliably detect its existence or quantify its severity without asking the patient directly. A useful means of assessing pain and evaluating the effectiveness of analgesia is to ask the patient to rate the degree of pain along a numeric or visual pain scale (Table 5–1). General guidelines for management of pain are recommended for the treatment of all patients with pain (Table 5–2). Clinicians should ask about the nature, severity, timing, location, quality, and aggravating and relieving factors of the pain. Distinguishing between neuropathic and nociceptive (somatic or visceral) pain is essential to proper tailoring of pain treatments. The goal of pain management is properly decided by the patient. Some patients may wish to be completely free of pain even at the cost of significant sedation, while others will wish to control pain to a level that still allows maximal functioning.