Cancer pain at the end of life: a biopsychosocial perspective

The Incidence of Mental Disorders Increases over Time in Patients with Cancer Pain: Data from a Retrospective Cohort Study

Background

It is well known that cancer patients more seldom have a psychiatric disorder than noncancer patients with chronic pain. Conversely, earlier studies have suggested that, at the psychiatric level, long-term cancer survivors (LCSs) have more in common with noncancer patients affected by chronic pain.

Materials and Methods

We investigated 89 cancer patients with acute pain (Acute Cancer Pain Patients, ACPPs) treated at a university outpatient chemotherapy department and compared these with 61 LCSs (living >5 yr after the first diagnosis) admitted by general practitioners for the treatment of noncancer pain. Upon administration, each patient was psychiatrically assessed by a liaison-psychiatrist conducting a semistructured interview. In a second step, we compared the LCS patients with hitherto treated noncancer patients suffering from chronic pain and ACPPs with data published by Derogatis in 1983.

Results

In a comparison of LCSs with ACPPs, LCSs have more patients with brain organic disorders and more addictions. The largest cancer group within the LCSs is patients with urogenital (Uro) cancer (44.3%), while within the ACPPs, these are patients with cancer of the gastrointestinal (GI) tract (ACPP-GI, 57.2%). As far as the distribution of mental disorders is concerned, long-term cancer survivors show some similarities to noncancer patients. The data of ACPPs are similar to those of cancer patients, published by Derogatis. Discussion. The higher values of addiction and brain organic disorders, in particular, and the slight differences for psychic disorders in general of LCSs vs. ACPPs may result from the different cancer types and a longer survival time for urogenital tract cancer compared to GI cancer. In an additional examination, we compared patients with acute cancer of the GI tract (ACPP-GI, n = 50) with those of the urogenital tract (ACPP-Uro, n = 43). ACPP-Uro had the lowest percentage of patients with psychiatric disorders in general (ACPP-Uro 37.2%, ACPP-GI 50.0%, all LCSs 65.6%, and LCS-Uro 74.1%) and addiction, in particular (ACPP-Uro 2.3%, ACPP-GI 4.0%, and LCSs 13.1%).

Conclusion

Cancer patients can develop a process of chronification with an increase in the prevalence of mental disorders. For urogenital cancer, an increase in the probability to develop mental disorders is a function of time.

Caregiver-guided pain coping skills training for patients with advanced cancer: Results from a randomized clinical trial

BACKGROUND

Pain is a major concern among patients with advanced cancer and their family caregivers. Evidence suggests that pain coping skills training interventions can improve outcomes, however they have rarely been tested in this population.

AIM

To test the efficacy of a caregiver-guided pain coping skills training intervention. The primary outcome was caregiver self-efficacy for helping the patient manage pain.

DESIGN

A randomized controlled trial compared the intervention to an enhanced treatment-as-usual control. Dyads in both conditions received pain education, and those in the intervention received three sessions of pain coping skills training. Caregiver outcomes (self-efficacy; caregiver strain, caregiving satisfaction, psychological distress) and patient outcomes (self-efficacy, pain intensity and interference, psychological distress) were collected at baseline and post-intervention.

SETTING/PARTICIPANTS

Two hundred two patients with stage III-IV cancer and pain and their family caregivers were enrolled from four outpatient oncology clinics and a free-standing hospice/palliative care organization.

RESULTS

Compared to those in the control arm, caregivers in the intervention reported significant increases in caregiving satisfaction (p < 0.01) and decreased anxiety (p = 0.04). In both conditions, caregivers reported improvements in self-efficacy, and patients reported improvements in self-efficacy, pain severity and interference, and psychological distress.

CONCLUSIONS

This is the first study to test a pain coping skills intervention targeted to patients and caregivers facing advanced cancer. Findings suggest that pain education provides benefits for patients and caregivers, and coping skills training may be beneficial for caregivers. Further research is needed to optimize the benefits of education and pain coping skills training for improving cancer pain outcomes.Trial registration: ClinicalTrials.gov NCT02430467, Caregiver-Guided Pain Management Training in Palliative Care.

[Mechanisms of chronification and potential addiction in tumor pain : Comparison with non-tumor pain - A review of the literature]

BACKGROUND

Due to advances in oncological therapy options and increasing survival rates, the number of cancer patients with persistant pain, who are in need of analgesic therapy has increased. It has been proven that biopsychosocial mechanisms exist in patients with persistant non-cancer pain leading to chronification. Furthermore, addiction has been identified as a complication of analgesic therapy.

OBJECTIVE

Can the multidimensional model of chronic pain enhancement and chronification be used for patients with cancer pain, analogue to patients with non-cancer pain? Can addiction sydromes as a result of analgesic treatment be demonstrated?

MATERIAL AND METHODS

In this non-systematic review, a literature search was carried out for somatic and psychosocial chronification mechanisms in patients with cancer pain. Indications for potential addiction syndromes in cancer patients are demonstrated based on selected publications. A Medline search provided a number of relevant publications that are listed (see Supplementary Material).

RESULTS AND DISCUSSION

Somatic chronification mechanisms, such as pain intensity, repetitive algesic stimuli, topical and demographic factors, are found both in persistant non-cancer pain and cancer pain. Cancer-induced peripheral and central sensitization mechanisms that can be due to underlying genetic variations, are specific for cancer pain. With regard to psychosocial determinants for pain chronification, both cancer and non-cancer patients show similar patterns. Furthermore, data from the literature support the existence of addiction in cancer patients.

CONCLUSION

In order to optimize treatment more attention should be paid to the risk of chronification and addiction in cases of chronic persistant cancer pain.

Enhancing legacy in palliative care: study protocol for a randomized controlled trial of Dignity Therapy focused on positive outcomes

Background

Dignity Therapy is a brief psychotherapy that can enhance a sense of legacy while addressing the emotional and existential needs of patients receiving hospice or palliative care. In Dignity Therapy, patients create a formalized “legacy” document that records their most cherished memories, their lessons learned in life, as well as their hopes and dreams for loved ones in the future. To date, this treatment has been studied for its impact on mitigating distress within hospice and palliative care populations and has provided mixed results. This study will instead focus on whether Dignity Therapy enhances positive outcomes in this population.

Methods/Design

In this study, 90 patients with cancer receiving hospice or palliative care will complete a mixed-methods randomized controlled trial of Dignity Therapy (n = 45) versus Supportive Attention (n = 45). The patients will be enrolled in the study for 3 weeks, receiving a total of six study visits. The primary outcomes examine whether the treatment will quantitatively increase levels of positive affect and a sense of life closure. Secondary outcomes focus on gratitude, hope, life satisfaction, meaning in life, resilience, and self-efficacy. Using a fixed, embedded dataset design, this study will additionally use qualitative interviews to explore patients’ perceptions regarding the use of positive outcome measures and whether these outcomes are appropriately matched to their experiences in therapy.

Discussion

Dignity Therapy has shown mixed results when evaluating its impact on distress, although no other study to date has solely focused on the potential positive aspects of this treatment. This study is novel in its use of mixed methods assessments to focus on positive outcomes, and will provide valuable information about patients’ direct experiences in this area.

Trial registration

ISRCTN91389194

Improving communication in cancer pain management nursing: a randomized controlled study assessing the efficacy of a communication skills training program

PURPOSE

Effective communication is needed for optimal cancer pain management. This study assessed the efficacy of a general communication skills training program for oncology nurses on communication about pain management.

METHODS

A total of 115 nurses were randomly assigned to a training group (TG) or control group (CG). The assessment included the recording of interviews with a simulated cancer patient at baseline for both groups and after training (TG) or 3 months after baseline (CG). Two psychologists rated the content of interview transcripts to assess cancer pain management communication. Group-by-time effects were measured using a generalized estimating equation.

RESULTS

Trained nurses asked the simulated patient more questions about emotions associated with pain (relative rate [RR] = 4.28, p = 0.049) and cognitions associated with pain treatment (RR = 3.23, p < 0.001) and used less paternalistic statements about cancer pain management (RR = 0.40, p = 0.006) compared with untrained nurses.

CONCLUSIONS

The general communication skills training program improved only a few of the communication strategies needed for optimal cancer pain management in nursing. General communication skills training programs should be consolidated using specific modules focusing on communication skills related to cancer pain management.

A systematic review: non-pharmacological interventions in treating pain in patients with advanced cancer

AIMS

To assess and synthesize the evidence of the effects and safety of non-pharmacological interventions in treating pain in patients with advanced cancer.

BACKGROUND

Pain is a common symptom experienced by patients with advanced cancer; the treatment of such pain is often suboptimal. To manage it, non-pharmacological interventions are recommended after pharmacological treatments have been re-evaluated and modified. However, there remains a lack of knowledge about the effects and safety of such interventions.

DESIGN

A systematic review was conducted based on the procedure of the Centre of Reviews and Dissemination.

DATA SOURCES

Research papers published between 2000-2013 were identified from the following databases: CINAHL, MEDIC, MEDLINE (Ovid) and PsycINFO. The references in the selected studies were searched manually.

REVIEW METHODS

The studies selected were reviewed for quality, using Cochrane Effective Practice and Organisation of Care Review Group risk of bias assessment criteria.

RESULTS

There was limited evidence that some of the non-pharmacological interventions were promising with respect to reducing cancer pain. Relatively, few adverse events were reported as a result of using such interventions.

CONCLUSION

It was not possible to draw conclusions about the effects and safety of the non-pharmacological interventions in reducing cancer pain. Some interventions showed promising short-term effects, but there is a need for more rigorous trials. Qualitative studies are required to collect information about patients' perceptions. There are several research gaps: we found no studies about music, spiritual care, hypnosis, active coping training, cold or ultrasonic stimulation.

An open randomized comparison of clinical effectiveness of protocol-driven opioid analgesia, celiac plexus block or thoracoscopic splanchnicectomy for pain management in patients with pancreatic and other abdominal malignancies

In inoperable malignancy, pain relief with opioids is often inadequate. Nerve block procedures may improve symptom control. Our aim was to assess celiac plexus block (CPB) and thoracoscopic splanchnicectomy (TS) in patients receiving appropriate medical management (MM).

METHODS

Patients with confirmed irresectable malignancy of the pancreas or upper abdominal viscera who required opioid analgesia were randomized to MM alone, MM+CPB, or MM+TS. Randomization was stratified by treatment centre, tumour type and previous opioid medication. The primary endpoint was pain relief at 2 months.

RESULTS

65 patients (58 pancreas cancer) were randomized, 18 withdrew or died within 2 months. Effective pain relief was achieved in only one third of subjects at 2 weeks, and just under half at 2 months (MM: 6/19 and 5/12 evaluable patients; CPB: 5/14 and 5/9; TS 4/14 and 4/11). There were no significant differences between the groups in pain scores or opioid consumption, and there was no correlation between continued use of opioids and effective pain relief.

DISCUSSION

Previous randomized studies have shown small differences in pain scores, but no difference in opioid consumption and quality of life. The absence of any benefit from interventions in the present study questions their value.

A Multidimensional Model for Understanding Cancer Pain

The experience of pain pervades the physical and psychosocial domains of a patient's existence. It has a concrete underpinning in the form of an injury or disease process, yet subjective responses to pain sensations are psychosocial processes that influence the experience of pain and the capacity to cope with it. Anticipation of pain is one of the key fears associated with cancer, and uncontrolled pain strips away morale and quality of life. The interacting biopsychosocial dimensions are important areas for consideration in the comprehensive, skillful approach to assessment and treatment of cancer pain. This article addresses the interactive relationships between pain and mood using the biopsychosocial model as a heuristic for assessment.

Processes of adjustment to end-of-life losses: a reintegration model

The processes surrounding psychological adjustment to losses due to advancing and end-stage illness have not been well delineated. While adjustment to losses due to death are often thought of as the bereaved's lot, dying persons experience multiple, accumulating, and profound losses of functions, abilities, roles, and relationships and therefore have to adjust as well. Many people who are facing death in the near future negotiate these losses, still achieving quality of life in all dimensions. Others fare less well. It is hard to intervene helpfully without a clear understanding of how either trajectory occurs. Building from current literature on loss and adjustment, we describe a conceptual framework of key adjustment processes that allow for quality of life during terminal illness. We term this the reintegration model. It has comprehension, creative adaptation and reintegration components, each involving the physical, psychological, social, and existential domains in ways that are characteristic of the needs, tasks and options available to a seriously ill and dying person. In this paper, we discuss the model, focusing on normal adjustment processes, and describe the implications of the framework for the dying person, caregivers, and the palliative care team.

Cancer pain and depression: a systematic review of age-related patterns

BACKGROUND

Pain is a common and debilitating symptom experienced by cancer patients of all ages. Cancer pain is associated with elevated levels of depression; however, age-related patterns in this relationship remain unclear. This information is important to provide effective palliation of pain and depression to the growing numbers of older cancer patients.

OBJECTIVE

To provide a systematic review of the literature regarding age-related patterns in the intensity or prevalence of depression among cancer patients with pain.

METHODS

Medical and psychological literature databases were searched to identify eligible studies. The methodological quality and outcomes of the studies were compiled and systematically reviewed.

RESULTS

Five articles, describing four studies, met the inclusion and exclusion criteria. Due to high levels of cross-study methodological variability, a qualitative review was undertaken. Three of the four studies did not find evidence for age-related patterns in depression. The fourth study found that depression increased with age.

CONCLUSION

The weight of the evidence suggests that younger and older cancer patients with pain report comparable levels of depression. However, this conclusion remains preliminary due to the methodological limitations of the available studies. Research is needed to more adequately address this important issue.

Update in Cancer Pain Syndromes

Cancer pain assessment and management are integral to palliative medicine. This paper reviews recent publications in the period 1999-2004 in the broad categories of epidemiology, pain assessment, nonpharmacologic approaches to cancer pain (radiation therapy, anesthetic blocks, palliative surgery and chemotherapy, complementary and alternative medicine), and in nociceptive pain, neuropathic pain, visceral pain, and bone pain.

A multicenter study of the revised Edmonton Staging System for classifying cancer pain in advanced cancer patients

The comparative analysis of analgesic interventions for cancer pain is greatly compromised by the lack of well-validated and clinically acceptable tools, which allow a composite classification of pain and patient population characteristics. Although the Edmonton Staging System (ESS) for cancer pain was developed for this purpose, clinical and research utility has been limited due to problems associated with the assessment of some items, especially in relation to definitions and terminology. To overcome these limitations, we designed a revised ESS (rESS) and conducted a multicenter study to determine its inter-rater reliability and predictive value. In revising the rESS, we hypothesized that patients with less problematic pain features would require a shorter time to achieve stable pain control, require less complicated analgesic regimens, be more responsive to opioid therapy, and use lower opioid doses. The rESS items include mechanism of pain, presence or absence of incidental pain, presence or absence of psychological distress and addictive behavior, and level of cognitive function. Patients with cancer pain who were consecutively admitted to two different hospice centers, an acute care consultation service in a teaching hospital or a tertiary palliative care unit in a second teaching hospital were evaluated for study entry. Two independent palliative care specialists completed the rESS where possible within 24 hours of each other. Patients' pain ratings and opioid consumption were recorded daily until the study endpoint (i.e. achievement of stable pain control, discharge or death). Seven hundred and forty-six patients were eligible for study entry and of these, 619 (83%) had a pain syndrome. Inter-rater reliability estimates ranged from 0.67 (pain mechanism) to 0.95 (presence of addiction). In the univariate Cox regression analysis, younger patients (<60), as well as patients with neuropathic pain, incidental pain, psychological distress, or co-morbid psychological distress and addiction, required a significantly longer time to achieve stable pain control (P<0.05). In the multivariate Cox regression analysis, only age (<60), neuropathic pain and incidental pain were significantly associated with time to reach stable pain control (P<or=0.05). Patients with neuropathic or incidental pain used significantly more modalities to achieve stable pain control (P<0.01). Patients with neuropathic pain, incidental pain, as well as the presence of psychological distress or addiction, required a higher final mean morphine equivalent daily dose (MEDD) (P<0.001). A comparison of the rESS with the ESS demonstrated the ineffectiveness of the ESS prognostic staging system for predicting achievement of stable pain control. These findings confirm the study hypothesis, suggesting that the rESS appears to have good predictive value and a moderate to high inter-rater reliability. We suggest the rESS should prove to be a useful tool in clinical practice, and in the comparison of cancer pain populations in research studies.

Models of adjustment to chronic illness: Using the example of rheumatoid arthritis

There are a number of theoretical frameworks that attempt to explain how individuals may adjust to threats to health and serious physical illness. The three major paradigms that attempt to organize key components of health and adaptation to illness include the following: the biomedical model which emphasizes disease; psychological models of adaptation to illness; and biopsychosocial models with the latter two emphasizing health, functioning, and well-being. Each of these three major paradigms, including biomedical, psychosocial, and biopsychosocial frameworks, is discussed and critiqued in turn, and contributions and theoretical issues in terms of adjustment to chronic illness, particularly rheumatoid arthritis (RA), are highlighted. Furthermore, a biopsychosocial framework for conceptualizing adjustment to physical illness is proposed that incorporates elements from key existing biomedical and psychosocial models of adaptation to chronic physical health issues.