Transdermal Opioids and the Quality of Life of the Cancer Patient: A Systematic Literature Review.

OBJECTIVE: This systematic literature review aims to evaluate the effectiveness of transdermal opioids in managing cancer pain and their impact on the quality of life (QoL) of patients. DATA SOURCES: A systematic literature review conducted following the PRISMA protocol, focusing on randomized clinical trials found in the Lilacs, Embase, PubMed, and SciELO databases over the last 20 years. STUDY SELECTION AND DATA EXTRACTION: We included randomized clinical trials, published in English, Portuguese, or Spanish, which assessed the impact of transdermal opioids on the QoL. Data extraction was facilitated using the Rayyan app. DATA SYNTHESIS: Six articles meeting the inclusion and exclusion criteria were analyzed. These studies covered a population ranging from 24 to 422 cancer patients experiencing moderate to severe pain. The risk of bias was assessed in each study, generally being categorized as uncertain or high. RELEVANCE TO PATIENT CARE AND CLINICAL PRACTICE: The findings indicate that the analgesic effectiveness and side effects of transdermal formulations (specifically buprenorphine and fentanyl) for managing moderate to severe cancer pain are comparable to, or in some cases superior to, those of oral opioids traditionally employed. CONCLUSIONS: Transdermal therapy was suggested to have several advantages over oral opioid therapy in enhancing cancer patients' QoL. These benefits span various dimensions, including pain management, physical functioning, mental health, vitality, overall patient improvement, anger/aversion, strength/activity, general QoL, cognitive and emotional functions, fatigue, and insomnia.

Clinical evaluation and prevalence of fibromyalgia in hepatitis C patients / Avaliação clínica e prevalência de fibromialgia em pacientes portadores de hepatite C

ABSTRACT BACKGROUND AND OBJECTIVES: The worldwide distribution and etiology of fibromyalgia are poorly understood. It is believed that different factors are involved, such as hepatitis C virus infection. The aim of this study was to estimate the prevalence of fibromyalgia in hepatitis C virus infected patients, trying to identify the occurrence of liver injury, extrahepatic clinical manifestations, anxiety, depression, and the impact on the quality of life. METHODS: This is a cross-sectional study of patients (n=118) with hepatitis C virus infection who were compared with a group of clinically stable patients not infected with the hepatitis C virus (n=118). The Anxiety and Depression Questionnaire was applied, and for those diagnosed with fibromyalgia, the Fibromyalgia Impact Questionnaire. Liver biopsies were analyzed according to the METAVIR classification. The Schirmer test was performed to investigate abnormal tear production in the studied patients. Data analysis was performed using the Statistical Package for Social Sciences (SPSS) software, v.10.0. RESULTS: The prevalence of fibromyalgia in infected patients was 7.6%. In patients infected with fibromyalgia, a significant prevalence of anxiety and depression was observed. Fibromyalgia Impact Questionnaire scores were higher in infected patients with fibromyalgia. When comparing the complementary tests in infected patients with and without fibromyalgia, no significant differences were found for the Schirmer test, viral genotype, and degree of fibrosis and liver inflammation. CONCLUSION: In females, there was a positive relationship between hepatitis C virus infection, fibromyalgia, and extrahepatic symptoms, which translates into a higher prevalence of anxiety and depression and impaired quality of life.

RESUMO JUSTIFICATIVA E OBJETIVOS: A fibromialgia tem distribuição mundial e etiologia pouco comprendida. Acredita-se no envolvimento de diferentes fatores, como a infecção pelo vírus da hepatite C. O objetivo deste estudo foi estimar a prevalência de fibromialgia em pacientes infectados pelo vírus da hepatite C, procurando identificar a ocorrência de lesão hepática, manifestações clínicas extra-hepáticas, ansiedade, depressão e o impacto na qualidade de vida. MÉTODOS: Trata-se de um estudo de corte transversal com pacientes (n=118) portadores de infecção pelo vírus da hepatite C que foram comparados a um grupo composto de pacientes clinicamente estáveis e não infectados pelo vírus da hepatite C (n=118). Foi aplicado o Questionário de Ansiedade e Depressão, e para os que obtivessem o diagnóstico de fibromialgia, o Questionário de Impacto da Fibromialgia. As biopsias hepáticas foram analisadas de acordo com a classificação METAVIR. Foi realizado o teste de Schirmer para a pesquisa de lacrimejamento anormal nos pacientes estudados. A análise dos dados foi realizada através do programa Statistical Package for Social Sciences (SPSS) v.10.0. RESULTADOS: A prevalência de fibromialgia em pacientes infectados foi de 7,6%. Nos pacientes infectados com fibromialgia observou-se prevalência significativa de ansiedade e depressão. A pontuação do Questionário de Impacto da Fibromialgia foi maior nos pacientes infectados e com fibromialgia. Quando se relacionou os exames complementares em infectados com e sem fibromialgia, não foram constatadas diferenças significativas para o teste de Schirmer, genótipo viral e grau de fibrose e inflamação hepática. CONCLUSÃO: Nos indivíduos do sexo feminino, observou-se uma relação positiva entre a infecção pelo vírus da hepatite C, fibromialgia e sintomas extra-hepáticos, que se traduz em maior prevalência de ansiedade e depressão e em comprometimento na qualidade de vida.

Latin American and Caribbean consensus on noninvasive central nervous system neuromodulation for chronic pain management (LAC2-NIN-CP).

INTRODUCTION: Chronic pain (CP) is highly prevalent and generally undertreated health condition. Noninvasive brain stimulation may contribute to decrease pain intensity and influence other aspects related to CP. OBJECTIVE: To provide consensus-based recommendations for the use of noninvasive brain stimulation in clinical practice. METHODS: Systematic review of the literature searching for randomized clinical trials followed by consensus panel. Recommendations also involved a cost-estimation study. RESULTS: The systematic review wielded 24 transcranial direct current stimulation (tDCS) and 22 repetitive transcranial magnetic stimulation (rTMS) studies. The following recommendations were provided: (1) Level A for anodal tDCS over the primary motor cortex (M1) in fibromyalgia, and level B for peripheral neuropathic pain, abdominal pain, and migraine; bifrontal (F3/F4) tDCS and M1 high-definition (HD)-tDCS for fibromyalgia; Oz/Cz tDCS for migraine and for secondary benefits such as improvement in quality of life, decrease in anxiety, and increase in pressure pain threshold; (2) level A recommendation for high-frequency (HF) rTMS over M1 for fibromyalgia and neuropathic pain, and level B for myofascial or musculoskeletal pain, complex regional pain syndrome, and migraine; (3) level A recommendation against the use of anodal M1 tDCS for low back pain; and (4) level B recommendation against the use of HF rTMS over the left dorsolateral prefrontal cortex in the control of pain. CONCLUSION: Transcranial DCS and rTMS are recommended techniques to be used in the control of CP conditions, with low to moderate analgesic effects, and no severe adverse events. These recommendations are based on a systematic review of the literature and a consensus made by experts in the field. Readers should use it as part of the resources available to decision-making.

Optimizing cancer pain management in resource-limited settings.

PURPOSE: Adequate cancer pain management (CPM) is challenging in resource-limited settings, where current international guideline recommendations are difficult to implement owing to constraints such as inadequate availability and accessibility of opioids, limited awareness of appropriate opioid use among patients and clinicians, and lack of guidance on how to translate the best evidence into clinical practice. The multinational and multidisciplinary CAncer Pain managEment in Resource-limited settings (CAPER) Working Group proposes a two-step initiative to bridge clinical practice gaps in CPM in resource-limited settings. METHODS: A thorough review of the literature, a steering committee meeting in February 2017, and post-meeting teleconference discussions contributed to the development of this initiative. As a first step, we developed practical evidence-based CPM algorithms to support healthcare providers (HCPs) in tailoring treatment according to availability of and access to resources. The second part of the initiative proposes a framework to support an effective implementation of the CPM algorithms that includes an educational program, a pilot implementation, and an advocacy plan. RESULTS: We developed CPM algorithms for first-line use, breakthrough cancer pain, opioid rotation, and refractory cancer pain based on the National Comprehensive Cancer Network guidelines and expert consensus. Our proposed educational program emphasizes the practical elements and illustrates how HCPs can provide optimal CPM according to evidence-based guidelines despite varied resource limitations. Pilot studies are proposed to demonstrate the effectiveness of the algorithms and the educational program, as well as for providing evidence to support a draft advocacy document, to lobby policymakers to improve availability and accessibility of analgesics in resource-limited settings. CONCLUSIONS: These practical evidence-informed algorithms and the implementation framework represent the first multinational step towards achieving optimal CPM in resource-limited settings.

Persistent idiopathic facial pain, a diagnosis and treatment of challenge. Case report

ABSTRACT BACKGROUND AND OBJECTIVES: Persistent idiopathic facial pain is a chronic disease with neuropathic origin, whose etiology is usually unknown; it is a medical condition that does not respond satisfactorily to drug therapy. It is also a disease with a major impact on patient quality of life and difficult to diagnose. This study aimed to report the diagnosis of a complex, persistent idiopathic facial pain, the pharmacological intervention taken and the adoption of integrative and complementary practices for the management of persistent idiopathic facial, as well as the clinical course and the impact of these actions on the patient's quality of life. CASE REPORT: A female patient, 52, diagnosed 06 years ago as a carrier of persistente idiopathic facial pain associated with bruxism and temporomandibular disorders. The patient presented with a complaint of orofacial pain which did not meet the diagnostic criteria for temporomandibular disorders. The patient also presented myofascial and trigeminal neuralgia pain in the left buccal region which emerged after performing a root canal procedure. The therapeutic plan adopted was based on pharmacological therapy with pregabalin (450mg) in combination with venlafaxine hydrochloride (150mg), continuously. As additional measures, weekly acupuncture sessions, therapy sessions with psychologists, including hypnosis and meditation, as well as peripheral nerve and a venous block during crises and botulinum toxin application were applied. CONCLUSION: The therapeutic plan adopted led to a considerable improvement in the patient's quality of life, evidenced by the reduction in pain intensity and a decrease in the frequency of painful crises. The need for interdisciplinary monitoring, as it is a multifactorial disease, as well as for the ongoing training of various categories of health professionals involved in the treatment of persistent idiopathic facial, given that it is a complication which is rare and difficult to diagnose, is observed.

RESUMO Justificativa e objetivos: A dor facial idiopática persistente é uma doença crônica de origem neuropática cuja etiologia é normalmente desconhecida. É uma condição médica que não responde satisfatoriamente à farmacoterapia. Também é uma doença com grande impacto na qualidade de vida do paciente, e difícil de diagnosticar. O objetivo deste estudo foi reportar o diagnóstico de dor facial idiopática persistente, complexa, a intervenção farmacológica usada e a adoção de práticas integrativas e complementares para o manuseio da dor facial idiopática persistente, além do curso clínico e o impacto dessas ações na qualidade de vida do paciente. RELATO DO CASO: Paciente do sexo feminino, 52 anos, diagnosticada há 6 anos como portadora de dor facial idiopática persistente associada a bruxismo e distúrbio temporomandibular. A paciente apresentou-se com queixa de dor orofacial que não atendeu os critérios diagnósticos de distúrbio temporomandibular. A paciente também apresentou dor miofascial e neuralgia do trigêmeo na região esquerda da boca que surgiram depois de um procedimento de tratamento de canal. O plano terapêutico adotado foi pregabalina (450mg) em combinação com cloridrato de venlafaxina (150mg), contínuo. Como medidas adicionais, sessões semanais de acupuntura, terapia com psicólogo, incluindo hipnose e meditação, além de bloqueio do nervo periférico e bloqueio venoso durante as crises e aplicação de toxina botulínica. CONCLUSÃO: O plano terapêutico adotado trouxe melhora considerável na qualidade de vida da paciente, evidenciada pela redução da intensidade da dor e pela diminuição na frequência das crises dolorosas. Há necessidade de monitoramento interdisciplinar, por ser uma doença multifatorial, e de capacitação constante nas diversas categorias de profissionais de saúde envolvidos no tratamento da dor facial idiopática persistente, vista ser uma complicação rara e difícil de diagnosticar.

Undertreatment of pain and low use of opioids in Latin America.

Pain is highly prevalent among the adult Latin American population. However, many patients with moderate to severe pain do not have access to effective pain management with opioids due to limited access to healthcare, overuse of nonopioid analgesics, regulatory barriers and lack of appropriate information about opioids. There is scarce training on use of opioids among physicians and other healthcare providers, which leads to misconceptions, mainly related to a fear of prescribing opioids. Although opioids are safe and effective drugs for the treatment of moderate to severe chronic pain, the use of opioids in Latin American nations is clearly below standards compared with developed countries.

Constipation in patients with myofascial pain syndrome as important aspect for clinical and nutritional treatment: A case-control study / Constipação em pacientes com síndrome dolorosa miofascial como importante aspecto para o tratamento clínico e nutricional: um estudo caso-controle

ABSTRACT Objective To identify the occurrence of constipation in patients with myofascial pain syndrome and to correlate these disorders with the clinical and nutritional variables. Methods This report describes a case-control study performed with 98 adults of both sexs, including 49 patients and 49 individuals without pain. The intensity of the reported pain was evaluated using the Pain Visual Analog Scale, which provided a simple and efficient measurement of pain intensity consisting of a 10cm horizontal line with the ends marked "absence of pain" and "worst possible pain". The occurrence of constipation was evaluated using the Rome III criteria. A multivariate linear regression was proposed to investigate risk factors between the frequency of bowel movements per week and independent variables this study. Results The mean ages of the patients and controls were 45.9 (7.6) years and 41.2 (12.2) years, respectively. The intensity of the reported pain showed a mean of 7.3 (1.6) points. The likelihood of exhibiting constipation was 4.5 times higher in the patients than in the controls (p=0.001). The number of stools per week was negatively correlated with the intensity of the reported pain (r=-0.613, p<0.001). The use of benzodiazepines was negatively correlated with the frequency of bowel movements per week, while the use of muscle relaxants appeared to increase the frequency of defecation when combined with the use of benzodiazepines and adjusted for the intake of fiber, water and sexs (p=0.037). Conclusion Constipation was a frequent nosological entity in this patient population and the persistence of a change in intestinal motility showed a significant correlation with the pain intensity and low water intake. The reduction of the number of stools per week seems to be associated with the use of benzodiazepines.

RESUMO Objetivo Identificar a ocorrência de constipação em pacientes com síndrome dolorosa miofascial e correlacionar essa desordem da motilidade intestinal com variáveis clínicas e nutricionais. Métodos Trata-se de um estudo de caso-controle, realizado com 98 indivíduos adultos de ambos os sexos, sendo 49 pacientes e 49 indivíduos sem dor. A intensidade da dor foi avaliada usando a Escala Visual Analógica de Dor, que forneceu uma medida simples e eficaz de intensidade da dor, e consiste em uma linha horizontal de 10cm com as extremidades marcadas "ausência de dor" e "pior dor possível". A ocorrência de constipação foi avaliada utilizando os critérios de Roma III. Uma regressão linear multivariada foi proposta para investigar fatores de risco entre a frequência de dejeções por semana e demais variáveis independentes do estudo. Resultados A média da idade dos pacientes e controles foi de 45,9 anos ± 7,6 DP e 41,2 anos ± 12,2 DP, respectivamente. A intensidade da dor referida mostrou uma média de 7,3 pontos ± 1,6 DP. A probabilidade de exibir a constipação foi 4,5 vezes maior nos pacientes com dor miofascial que nos indivíduos do grupo controle (p=0,001). A frequência de dejeções semanais relatada pelos pacientes apresentou correlação negativa com a intensidade da dor (r=-0,613, p<0,001). O uso de benzodiazepínicos foi negativamente correlacionado com a frequência de dejeções por semana, enquanto que o uso de relaxantes musculares aumentou a frequência de dejeções quando combinado com o uso de benzodiazepínicos, e ajustado pela ingestão de fibras, água e sexo (p=0.037). Conclusão A constipação foi uma entidade nosológica frequente no grupo de pacientes com dor miofascial. A alteração na motilidade intestinal mostrou uma correlação significativa com a intensidade da dor e a baixa ingestão hídrica. A redução do número de dejeções por semana parece estar associada ao uso de benzodiazepínicos.

Optimizing post-operative pain management in Latin America / Aprimorar o controle da dor no pós-operatório na América Latina

Abstract Post-operative pain management is a significant problem in clinical practice in Latin America. Insufficient or inappropriate pain management is in large part due to insufficient knowledge, attitudes and education, and poor communications at various levels. In addition, the lack of awareness of the availability and importance of clear policies and guidelines for recording pain intensity, the use of specific analgesics and the proper approach to patient education have led to the consistent under-treatment of pain management in the region. However, these problems are not insurmountable and can be addressed at both the provider and patient level. Robust policies and guidelines can help insure continuity of care and reduce unnecessary variations in practice. The objective of this paper is to call attention to the problems associated with Acute Post-Operative Pain (APOP) and to suggest recommendations for their solutions in Latin America. A group of experts on anesthesiology, surgery and pain developed recommendations that will lead to more efficient and effective pain management. It will be necessary to change the knowledge and behavior of health professionals and patients, and to obtain a commitment of policy makers. Success will depend on a positive attitude and the commitment of each party through the development of policies, programs and the promotion of a more efficient and effective system for the delivery of APOP services as recommended by the authors of this paper. The writing group believes that implementation of these recommendations should significantly enhance efficient and effective post-operative pain management in Latin America.

Resumo O controle da dor no período pós-operatório é um problema significativo na prática clínica na América Latina. O controle insuficiente ou inadequado da dor é devido, em grande parte, à insuficiência de conhecimento, atitudes e formação e à comunicação precária em vários níveis. Além disso, a falta de conscientização da disponibilidade e importância de políticas e diretrizes inequívocas para avaliar a intensidade da dor, o uso de analgésicos específicos e a abordagem adequada para instruir o paciente levaram ao subtratamento consistente da dor na região. Contudo, esses problemas não são insuperáveis e podem ser abordados no âmbito tanto do provedor quanto do paciente. Políticas e diretrizes substanciais podem ajudar a garantir a continuidade dos cuidados e reduzir as variações desnecessárias na prática. O objetivo deste artigo é chamar a atenção para os problemas associados à dor aguda no pós-operatório (DAPO) e sugerir recomendações para solucioná-los na América Latina. Um grupo de especialistas em anestesiologia, cirurgia e dor desenvolveu recomendações que levarão a um controle mais eficiente e eficaz da dor. Será preciso mudar o conhecimento e o comportamento dos profissionais de saúde e pacientes e obter um compromisso por parte de legisladores. O sucesso dependerá de uma atitude positiva e do compromisso de cada parte através do desenvolvimento de políticas e programas e da promoção de um sistema mais eficiente e eficaz para a prestação de serviços para a DAPO, como recomendado pelos autores deste trabalho. O grupo que as redigiu acredita que a aplicação dessas recomendações deve melhorar de modo significativo a eficiência e eficácia do controle da dor no período pós-operatório na América Latina.

[Optimizing post-operative pain management in Latin America]. / Aprimorar o controle da dor no pós­operatório na América Latina.

Post-operative pain management is a significant problem in clinical practice in Latin America. Insufficient or inappropriate pain management is in large part due to insufficient knowledge, attitudes and education, and poor communications at various levels. In addition, the lack of awareness of the availability and importance of clear policies and guidelines for recording pain intensity, the use of specific analgesics and the proper approach to patient education have led to the consistent under-treatment of pain management in the region. However, these problems are not insurmountable and can be addressed at both the provider and patient level. Robust policies and guidelines can help insure continuity of care and reduce unnecessary variations in practice. The objective of this paper is to call attention to the problems associated with Acute Post-Operative Pain (APOP) and to suggest recommendations for their solutions in Latin America. A group of experts on anesthesiology, surgery and pain developed recommendations that will lead to more efficient and effective pain management. It will be necessary to change the knowledge and behavior of health professionals and patients, and to obtain a commitment of policy makers. Success will depend on a positive attitude and the commitment of each party through the development of policies, programs and the promotion of a more efficient and effective system for the delivery of APOP services as recommended by the authors of this paper. The writing group believes that implementation of these recommendations should significantly enhance efficient and effective post-operative pain management in Latin America.

Clinical evidence on visceral pain. Systematic review / Evidência clínica sobre dor visceral. Revisão sistemática

ABSTRACT BACKGROUND AND OBJECTIVES: Visceral pain is induced by abnormalities of organs such as stomach, kidneys, bladder, gallbladder, intestines and others and includes distension, ischemia, inflammation and mesenteric traction. It is responsible for physical and psychic incapacity, absenteeism and poor quality of life. This study aimed at discussing major aspects of visceral pain with regard to prevalence, etiology and diagnosis. CONTENTS: According to Evidence-Based Medicine concepts, visceral pain etiology, diagnosis and prognosis were reviewed in LILACS, EMBASE and Pubmed databases. Therapeutic studies were not selected. The following terms were used as search strategy: ("visceral pain"[MeSH Terms] OR ("visceral"[All Fields] AND "pain"[All Fields]) OR "visceral pain"[All Fields]). Only studies published in Portuguese, English or Spanish were included. Narrative reviews with opinionated content and specific therapeutic procedures of medical specialties were excluded. Studies on visceral pain related to heart, cancer and musculoskeletal diseases and pregnancy were also excluded. CONCLUSION: Visceral pain is a heterogeneous condition where most frequent presentation is abdominal pain in the course of irritable bowel syndrome. Other diseases induce visceral pain and adequate diagnosis is critical for effective treatment.

RESUMO JUSTIFICATIVA E OBJETIVOS: A dor visceral é causada por anormalidades de órgãos como o estômago, rim, bexiga, vesícula biliar, intestinos ou outros e inclui distensão, isquemia, inflamação e tração do mesentério. É responsável por incapacidade física e psíquica, absenteísmo do trabalho e má qualidade de vida. O objetivo deste estudo foi discutir os principais aspectos da dor visceral relacionados a prevalência, etiologia e diagnóstico. CONTEÚDO: Foram revisados segundo os preceitos da Medicina Baseada em Evidência os enfoques etiológicos, diagnóstico e prognóstico da dor visceral nas bases de indexações biomédicas, LILACS, EMBASE e Pubmed. Não foram selecionados os estudos terapêuticos. Utilizou-se como estratégia de busca os termos: ("visceral pain"[MeSH Terms] OR ("visceral"[All Fields] AND "pain"[All Fields]) OR "visceral pain"[All Fields]). Somente foram incluídos os estudos publicados em português, inglês ou espanhol. Foram excluídas as revisões narrativas de conteúdo opinativo e procedimentos terapêuticos específicos das especialidades médicas. Também foram excluídos os estudos sobre dor visceral relacionada às doenças do coração, neoplásicas, musculoesqueléticas e a gestação. CONCLUSÃO: A dor visceral é uma condição heterogênea, cuja apresentação mais frequente é de dor abdominal no curso de síndrome do intestino irritável. Outras doenças cursam com dor visceral e o diagnóstico adequado é fundamental para o tratamento eficaz.

Selenium and Zinc Status in Chronic Myofascial Pain: Serum and Erythrocyte Concentrations and Food Intake.

INTRODUCTION: Nutritional disorders have been reported to be important causal factors that can intensify or cause a painful response in individuals with chronic musculoskeletal pain. AIM: To assess the habitual intake of and the serum and erythrocyte levels of selenium and zinc in patients with chronic myofascial pain. MATERIALS AND METHODS: A case-control study of 31 patients with chronic myofascial pain (group I) and 31 subjects without pain (group II). Dietary record in five days for assessing food intake were used. The serum and erythrocyte concentrations of selenium and zinc were analyzed using an atomic absorption spectrophotometry. Pain intensity was assessed using a visual analog scale. RESULTS: The group of patients with chronic myofascial pain, compared with the control group, showed a lower erythrocyte concentration of selenium (79.46 ± 19.79 µg/L vs. 90.80 ± 23.12 µg/L; p = 0.041) and zinc (30.56 ± 7.74 µgZn/gHb vs. 38.48 ± 14.86 µgZn/gHb, respectively; p = 0.004). In this study, a compromised food intake of zinc was observed in the majority of the subjects in both groups. The selenium intake was considered to be safe in 80% of the subjects in both groups; however, the likelihood of inadequate intake of this mineral was twice as high in group I (49.5% vs. 24.4%, respectively). In the logistic regression analysis, the erythrocyte concentration of zinc was associated with the presence of pain. In each additional 1 mg of Zn2+ per gram of hemoglobin, a reduction of 12.5% was observed in the risk of the individual having chronic myofascial pain (B = -0.133; adjusted OR = 0.875, 95% CI = 0.803 to 0.954, Wald = 9.187, standard error = 0.044, p = 0.002). Physical inactivity and obesity were noted more commonly in group I compared with the control group. CONCLUSION: In this study, patients with chronic myofascial pain showed lower intracellular stores of zinc and selenium and inadequate food intake of these nutrients.