C-Reactive Protein and Its Relationship with Pain in Patients with Advanced Cancer Cachexia: Secondary Cross-Sectional Analysis of a Multicenter Prospective Cohort Study

Psychological symptom burden associated with malignant wounds: Secondary analysis of a prospective cohort study

OBJECTIVES

Patients with malignant wounds suffer from physical and psychological symptom burden. Despite psychological support being required, the impact of malignant wounds on patients' psychological distress is poorly investigated. We evaluated psychological distress associated with malignant wounds for patients at their end of life.

METHODS

This study used the secondary analysis of the results of a large prospective cohort study, which investigated the dying process among patients with advanced cancer in 23 palliative care units in Japan. The primary outcome of this study was the prevalence of moderate to severe psychological symptom burden, evaluated by the Integrated Palliative Care Outcome Scale (IPOS)-feeling at peace scores of 2-4. In addition, the factors affecting psychological symptoms were investigated. The quality of death was also evaluated upon death using the Good Death Scale score.

RESULTS

Out of the total 1896 patients, 156 had malignant wounds (8.2%). Malignant wounds were more common in female and young people. The breast, head, and neck were the most prevalent primary sites. More patients with malignant wounds had IPOS-feeling at peace scores of 2-4 than patients without malignant wounds (41.0% vs. 31.3%, p = 0.024). Furthermore, psychological distress was associated with moderate to severe IPOS-pain and the frequency of dressing changes. The presence of malignant wounds did not affect the quality of death.

SIGNIFICANCE OF RESULTS

This study showed increased psychological distress due to malignant wounds. Patients with malignant wounds require psychological support in addition to the treatment of physical symptoms for maintaining their quality of life.

On-Arrival Lumbar Epidural Analgesia for Lower Limb Trauma Pain in Emergency Care: A Superiority Randomized Controlled Trial

BACKGROUND

Lower limb trauma in emergency settings often leads to pain management challenges. Traditional methods, primarily non-steroidal anti-inflammatory drugs (NSAIDs) and opioids, have limitations. This study explores the efficacy of epidural analgesia in emergency for lower limb trauma patients (ELETRA) as an alternative for managing pain in lower limb trauma patients upon arrival in emergency care.

OBJECTIVES

 This study primarily focuses on determining ELETRA's effectiveness in reducing pain for patients with lower limb trauma upon arrival. It also aims to evaluate ELETRA's influence on decreasing stress and shortening hospital stays compared to traditional pain management approaches.

METHODS

This study was executed as a prospective, parallel-design, randomized controlled trial in the emergency department of a tertiary care teaching hospital. The interventions were performed in a dedicated induction room adjacent to the emergency operating theater. The trial was registered in the Clinical Trial Registry of India with registration number CTRI/2022/08/044699 dated 16/08/2022. Participants were 18- to 50-year-old patients with lower limb injuries, classified under American Society of Anesthesiologists (ASA) class 1 or 2. Participants were randomized into two groups: one receiving ELETRA and the other standard pain control treatment. The effectiveness of pain relief was measured through a visual analog scale (VAS), and hemodynamic parameters, adverse effects, levels of acute phase reactants, and stress hormones were also measured along with patient satisfaction.

RESULTS

The study enrolled 356 participants with lower limb injuries. After excluding participants lost following the intervention, data from 157 individuals in Group A and 160 in Group B were analyzed. Group A's success rate for analgesia (VAS < 2) was 92.35% (n = 145), significantly higher than Group B's 75.62% (n = 121) (p < 0.001). The commonest side effect was hypotension (5.73%) in Group A and nausea in Group B (7.5%). C-reactive protein (CRP) levels rose to 104.71 ± 8.99 mg/dL in Group A and 192.58 ± 9.23 mg/dL in Group B; the difference was statistically significant. Serum cortisol levels were also higher in Group B (67.18 ± 9.21) compared to Group A (44.72 ± 6.14) at one week. Group B had a longer hospital stay, averaging 12.24 ± 4.81 days, against Group A's 10.19 ± 4.91 days.

CONCLUSION

ELETRA is a safe and effective alternative for pain management in lower limb trauma patients in emergency settings. It reduces pain, improves patient satisfaction, and has a favorable impact on stress responses.

Inflammatory Markers and Radiotherapy Response in Patients With Painful Bone Metastases

CONTEXT

Inflammation is proposed to influence tumor response in radiotherapy (RT). Clinical studies to investigate the relationship between inflammatory markers and RT response is warranted to understand the variable RT efficacy in patients with painful bone metastases.

OBJECTIVES

To evaluate the association between inflammatory markers and analgesic response to RT in patients with painful bone metastases.

METHODS

Adult patients from 7 European study sites undergoing RT for painful bone metastases were included in this prospective and longitudinal analysis. The association between RT response and 17 inflammatory markers at baseline, as well as the association between RT response and the changes observed in inflammatory markers between baseline and three and eight weeks after RT, was analyzed with univariate regression analyses. Baseline analyses were adjusted for potential clinical predictors of RT response.

RESULTS

None of the inflammatory markers were significantly associated with an upcoming RT response in the analysis of 448 patients with complete baseline data. In patients available for follow-up, the three-week change in TNF (P 0.017), IL-8 (P 0.028), IP-10 (P 0.032), eotaxin (P 0.043), G-CSF (P 0.033) and MCP-1 (P 0.002) were positively associated with RT response, while the three-week change in CRP (P 0.006) was negatively associated.

CONCLUSION

Results from this study show an association between RT response and change in pro-inflammatory mediators and indicate that inflammation may be important to achieve an analgesic RT response in patients with painful bone metastases. None of the investigated inflammatory markers were found to be pre-treatment predictors of RT response.

Cancer cachexia: Pathophysiology and association with cancer-related pain

Cachexia is a syndrome of unintentional body weight loss and muscle wasting occurring in 30% of all cancer patients. Patients with cancers most commonly leading to brain metastases have a risk for cachexia development between 20 and 80%. Cachexia causes severe weakness and fatigue and negatively impacts quality and length of life. The negative energy balance in cachectic patients is most often caused by a combination of increased energy expenditure and decreased energy intake. Basal metabolic rate may be elevated due to tumor secreted factors and a systemic inflammatory response leading to inefficiency in energy production pathways and increased energy demand by the tumor and host tissues. A growing body of research explores physiological and molecular mechanisms of metabolic dysregulation in cachexia. However, decreased energy intake and physical functioning also remain important contributors to cachexia pathogenesis. Pain associated with metastatic malignancy is significantly associated with inflammation, thus making inflammation a common link between cancer pain and cachexia. Pain may also influence appetite and food intake and exacerbate fatigue and functional decline, potentially contributing to cachexia severity. Cancer pain and cachexia often occur simultaneously; however, causal relationships remain to be established. Appropriate assessment and treatment of pain in advanced cancer patients may positively impact nutrition status and physical functioning, slowing the progression of cachexia and improving quality and length of life for patients.