Research Article | Open Access
Wai Ching Lam, Linda Zhong, Yuqi Liu, Nannan Shi, Bacon Ng, Eric Ziea, Zhaoxiang Bian, Aiping Lu, "Hong Kong Chinese Medicine Clinical Practice Guideline for Cancer Palliative Care: Pain, Constipation, and Insomnia", Evidence-Based Complementary and Alternative Medicine, vol. 2019, Article ID 1038206, 13 pages, 2019. https://doi.org/10.1155/2019/1038206
Hong Kong Chinese Medicine Clinical Practice Guideline for Cancer Palliative Care: Pain, Constipation, and Insomnia
It is common for patients with cancers in Hong Kong seeking Chinese Medicine (CM) therapies as supportive care during cancer treatment and to manage treatment-related side effects. This article provides clinical practice guideline (CPG) on the use of CM for specific clinical indications caused by cancer and during cancer treatment, including pain, constipation, and insomnia, and aims to guide local licensed CM practitioners and provide beneficial reference for social medical decision makers and patients. In this manuscript, we summarize the clinical manifestation, CM pattern classification, and CM intervention including herbal treatment, acupuncture treatment, regulating, and nursing based on pattern differentiation.
According to the most update statistics from the Hong Kong Government, in 2015, number of new cases of cancer in Hong Kong hit a historical high of 30,318 and 14,316 deaths which were attributable to cancers . Multiple studies have pointed out that a significant proportion of cancer patients with moderate to severe pain, nausea, constipation, insomnia, anxiety, and other symptoms can benefit from palliative care [2–4]. Suffering from the symptoms, patients in Hong Kong commonly seek help from complementary and integrative therapies, especially CM, as supportive care during cancer treatment and manage treatment-related side effects .
Since CM is well known for its clinical effect in improving the quality of life of cancer patients, in 2014, the Hospital Authority (HA) has been commissioned by the Hong Kong Government to launch a project named “Integrated Chinese-Western Medicine Pilot Programme” . Eligible in-patients at the designated hospitals started receiving CM treatment based on clinical protocol developed by Chinese and Western Medicine experts. The pilot programme aims to explore feasibility and gain experience via small-scale pilots in order to explore the development of an Integrated Chinese-Western Medicine (ICWM) treatment model. Therefore, in order to standardize the diagnosis and treatment with CM and provide evidence-based clinical references for both Chinese and Western physicians, the Hong Kong Baptist University is entrusted by the HA to complete the CM CPG development process. The guideline development team, based on thorough analysis of the CM diagnosis and treatment environment in Hong Kong, adopted evidence-based medicine, qualitative research, and text mining techniques to provide the best evidence for the guidelines and completed the development of the guidelines. The guideline development team is based on the principle of multidisciplinary integration. Its members include health care policy makers, medical experts, methodologists, literature experts, and patient representatives.
Unlike other clinical guideline recommendations suggested to be used as the standard of therapy, we use the term “recommendation” to conclude CM treatments should be considered as a viable but not singular option for the management of a specific CM pattern. As CM contributes tailoring treatment based on symptom differentiation, combination-based approaches and the interactions of the numerous permutations are possible and still under investigating, such that recommendations must account for this limitation of our knowledge. Despite these limitations to evaluating the use of CM therapies in the oncology setting, the models provide sufficient evidence to warrant recommendations on the therapies as viable options for treating specific conditions.
In this article, we introduce the formation, promotion, execution, and update of the CPG in brief and then provide background for each CM therapy that has a sufficiently large body of evidence and historical support to formulate the recommendations. Information is also provided for CM patterns diagnosis criteria and intervention details and to implement the recommendations into the different CM patterns, respectively, for cancer-related pain, constipation, and insomnia.
The goal of this study is to summarize the methods and measures for the treatment of CM on pain, constipation and insomnia in cancer palliative care and to make a reasonable evaluation by careful review of existing practice and available published evidence on topic, in order to promote it and provide benefits for social medical decision makers and patients.
Data sources are labeled following by major content items. Sources from text mining are indicated by “※” and sources from Hong Kong experts’ consensus are labeled by “§”. Levels of evidence and classes of recommendations are directly labeled after literature evidence.
2.1. Data Query and Download
This study was conducted according to our previous work . To avoid repetition of clinical study and ensure efficiency, we chose SinoMed database as data source and identified clinical researches with CM treatment for cancer palliative care in SinoMed, which is the most comprehensive electronic medicine database in China. The time range is from 1979 to 1 January 2015. The following search terms were used: “cancer AND pain” OR “cancer AND insomnia” OR “cancer AND constipation” OR “cancer AND lymphedema” OR “cancer AND anorexia” OR “cancer AND lethargy” (in Chinese). As a result, 197213 records for cancer palliative care were retrieved.
2.2. Data Mining Process
After retrieving data from SinoMed, we listed the data order by download order. In order to transfer the interesting data into the framework of structured file system, a tool has been developed (software copyright with submitted ID 0261882 and registered ID 2010SR073409) to transfer its plain TXT data into Microsoft® SQL Server® 2008 R2 Enterprise Edition. Then we use a data slicing algorithm “discrete derivatives” based on the calculation of frequency with detailed algorithm described in our previous research , to filter high frequencies of (1) CM pattern classification and symptom differentiation; (2) herbal decoction; (3) acupuncture treatment. The data mining process was deployed on source data collected above with cancer and specified symptoms.
2.3. Existing Clinical Evidence Searching
With searching strategy, a combination of electronic and manual screening was adopted for systematic reviews of CM treatment on relevant symptoms. Cochrane guidelines were applied for methodological evaluation of literature quality. And we used the grades of recommendations and the levels of evidence proposed by Professor Jianping Liu of China designed for traditional medicines .
2.4. Hong Kong Local Expert Consensus
On the key issues in the CPG, Delphi survey was applied to collect professional advice from licensed CM practitioners in Hong Kong based on the literature searching and documented clinical evidences. After 2 rounds of surveys, Hong Kong local experts obtained consensus opinions on the contents of the items which will serve as one of the main sources for the formation of CPG.
2.5. Data Synthesis
Information from three aspects, (1) literature hotspots; (2) existing clinical evidence; (3) local expert consensus, is summarized and listed for optional items in CPG. Items with insufficient data support were excluded.
2.6. Review and Consultation
A comprehensive review of the CPG was conducted through an expert consensus meeting and finalized the items for inclusion in the CPG.
2.7. Drafting CPG
The guideline development group developed a framework and drafted the CPG accordingly.
The electronic version of this study will be published on the official websites of the HA and the Hong Kong Registered Chinese Medicine Practitioners Association. Also, publicity and promotion efforts will be conducted to Hong Kong CM practitioners.
It is the first time guidelines for CM clinical practice on cancer palliative care are formulated in Hong Kong. The production of this guide is just a beginning and an attempt. More experience and feedback are needed for further summarization.
CPG development panel will regularly entrust relevant professional personnel to have review through collecting, collating, and analyzing newly emerged evidence. CPG development panel has the responsibility and rights for decisions on the revision. In general, the CPGs need to be revised or updated in the following cases: (1) to include new intervention methods; (2) to provide evidences prove that the existing intervention methods are the best, beneficial, or detrimental; (3) in adding new important or meaningful conclusions; (4) in generating new medical resources.
3. Main Results
3.1.1. CM for Cancer Pain
Cancer pain is a subjective, multidimensional symptom that may affect patients throughout and after the course of the disease and its treatment . It is estimated that one-quarter of cancer patients experience cancer pain at diagnosis, one-third during treatment, and three-quarters during advanced stages [33, 34]. If the cancer pain is not relieved, the patient will feel extremely uncomfortable and may cause fatigue, anxiety, depression, loss of appetite, and other symptoms, and seriously affect the patient’s daily activities, self-care ability, and overall quality of life . Cancer pain has long been recorded for in ancient CM literatures since Han dynasty with various descriptions and naming on the symptoms. Moreover, many different evidences from reviews and clinical trials have showed that CM treatments were associated with cancer pain relief as well as improving quality of life [36–42].
3.1.2. CM for Cancer Constipation
Constipation is the third common symptom in palliative care cancer patients, only superseded by pain and anorexia [43–45]. It is important to be mentioned that constipation patient groups can be divided into defecation disorders which do not respond to laxatives but cognitive behavioral therapy and opioid induced constipation response to peripherally acting mu-opioid receptor antagonists (PAMORAs) and linaclotide and lubiprostone [45–47]. According to the clinical practice guidelines, a combination of a stimulant (e.g., senna or sodium picosulphate) and an osmotic laxative (e.g., polyethylene glycol or lactulose) is generally recommended . However, over 60% of patients prescribed laxatives reported certain degrees of constipation (e.g., inadequate pushing force, sense of incomplete defecation, or difficult defecation) . Therefore, CM become an alternative choice for researchers and cancer patients. According to the CM theory, constipation can be broadly divided into different patterns based on the underlying aetiology and severity . Similar to cancer pain, evidences present in CM herbal, acupuncture, regulating, and nursing treatments in form of reviews and clinical trials [50–55].
3.1.3. CM for Cancer Insomnia
Insomnia is one of the most common symptoms experienced by cancer patients before, during and after cancer-related treatment with prevalence rates of 30%-70% [56–63]. And it has significant correlation to psychological distress, reduces physical functioning, and impairs quality of life in cancer patients [64–66]. Although insomnia has high prevalence and negative consequences, it is often neglected and undertreated . In CM theory, treatments can be designed to treat the full range of physical and emotional disorders because they are interlocking each other. Currently, evidence supports the use of CM herbal treatment in cancer therapy related insomnia in both cancer patients and survivors . In addition, emerging researches suggest that, not limited to herbal medicine, acupuncture and nursing are also useful for treatment of commonly occurring cancer-related psychological symptoms [54, 69, 70]. As a result, patients and providers alike are interested in the evidence-based nonpharmacologic alternatives such as CM therapy for these symptoms .
3.2. Clinical Manifestation
CPG development panel consulted the patterns classification based on (1) literature hotspots; (2) existing clinical evidence; (3) local expert consensus and then determined 6 common CM patterns of cancer pain, 4 common CM patterns of cancer constipation, and 5 common CM patterns of cancer insomnia (Tables 1–4).
With the classification of patterns above, clinical CM practitioners can refer to the recommended pattern-related treatment methods. Based on further symptom differentiation and combine diagnosis, CM practitioners can tailor best-fit therapy for every patient.
4. CM Intervention
CM herbal medicine is applied commonly in intervention of cancer pain, constipation, and insomnia which can also cooperate with acupuncture or other comprehensive treatment options such as regulation and nursing. For patients with concurrent patterns and presented as complicated patterns, CM contributes tailoring treatment based on symptom differentiation; therefore, combination-based approaches can be considered.
In daily practice, patterns of pain, constipation, and insomnia are not completely consistent to the descriptions in defined CM patterns. Therefore, cross reference should be consulted. It is recommended that prescription should be on the base of comprehensive consideration of type of cancer, pattern, and symptom. For instance, pattern of qi movement stagnation is one of the most common cancer-related pain patterns in clinical. If patient complicates with symptoms of phlegm and blood stasis on this basis, the pattern could be treated as qi movement stagnation in coordination with combination of phlegm and blood stasis pattern; moreover, modified diagnosis is recommended based on the cancer type, characteristics of qi, phlegm, blood, and pain symptom. When clinical effects are not optimal, the relationship among various points of pattern differentiation such as deficiency and excess, cold and heat, qi and blood, dredging and descending, and pathological products should be comprehensively taken into account. Besides, other patterns differentiation methods, for example, microcosmic pattern differentiation, could be utilized to search possible reasons.
According to the yin and yang sleep theory of CM, the yang qi rises during the daytime and reaches apex at noon. Combined with the understanding of modern time biology and clinical experience, it is recommended to follow a medicine taking approach stated by an ancient CM practitioner in Ming dynasty that insomnia patients are required to take the medicine one hour after lunch and one hour after dinner (grading of recommendation: C§; level of evidence: IV).
Acupuncture is another treatment option to treat a variety of symptoms and conditions associated with cancer and the side effects of cancer treatments. It is a family of procedures involving stimulation of anatomical locations on the skin by a variety of techniques. The most studied mechanism of stimulation of acupuncture points uses penetration of the skin by thin, solid, metallic needles, which are manipulated manually or by electrical stimulation .
Acupoints recommended for treatment of lung cancer pain are He Gu (LI4), Nei Guan (PC6), and Kong Zui (LU6), for treatment of liver cancer pain are He Gu (LI4), Nei Guan (PC6), Yang Ling Quan (GB34), and Zhong Du (LR6), and for treatment of intestinal cancer are He Gu (LI4), Nei Guan (PC6), Zhong Wan (RN12), Zu San Li (ST36), and Zhi Gou (SJ6) (grading of recommendation: B※§; level of evidence: IIa).
4.3. Regulating and Nursing
4.3.1. Regulating on Cancer Pain
Herbal dishes, static qigong, qigong exercise, ointment or medicinal oil for external use, bloodletting, auricular point (auricular beads), cold compress or hot compress, moxibustion, emotional counseling, sufficient sleep, etc. can be used to relieve cancer pain (grading of recommendation: C§; level of evidence: IV).
4.3.2. Regulating on Cancer Constipation
Develop healthy eating habits, to eat mostly foods derived from vegetables, fruits, and whole grains, often to hydrate and limit spicy, highly fatty, or processed foods. Avoid excessive drinking or eating too much cold food. Strengthen regular physical exercise and avoid sedentary activities, develop regular bowel habits, avoid excessive mental stimulation, and maintain a pleasant mood. For elderly and chronic constipation patients, treating with enema or other external treatments can prevent spending a lot of time on the toilet straining which might induce acne, hematochezia, and even angina pectoris, myocardial infarction, or other symptoms (grading of recommendation: C§; level of evidence: IV).
4.3.3. Prevention and Nursing on Cancer Insomnia
In aspect of prevention, CM theory stated that insomnia is due to disorder of brain function. Therefore, it is important to promote a healthy brain and mind by maintaining pleasant mood and healthy work-life balance (grading of recommendation: B※§; level of evidence: IIa/IIIb) .
In aspect of nursing, it is to cooperate with CM practitioners in the treatment and care of elderly and disabled patients. Nursing includes basic care and specialist care. Basic nursing work includes daily life care, primary diagnosis and treatment techniques, daily observation, nutrition, disinfection and isolation, and hygiene, in order to establish proper environment to relief insomnia. There should be time for mind relaxing before going to sleep, avoiding spending time on worrying about falling asleep, and avoiding alcohol, caffeine, and nicotine. Appropriate relief exercises should be added after dinner. There is no tea or coffee before going to bed. Turn off the sound while sleeping, pull the curtains down, turn off the lights, and develop good sleep habits. Take Chinese Medicine on time to promptly treat related diseases. On sleep posture, generally, right lateral recumbent position is adopted while supine and prone positions should be avoided. In diet, take diet and health foods that promote sleep. Finally, methods such as medicine pillow, massage, and herbal dishes are also recommended for insomnia patients (grading of recommendation: B※§; level of evidence: IIIb) .
Details of data mining, selection, extraction, and assessment carried out to support the findings of this study are available from the corresponding author upon request
Conflicts of Interest
The authors declare that there are no conflicts of interest regarding the publication of this paper.
The research and publication were funded by Hong Kong Hospital Authority Research Fund [HA 33-14-110-542-130].
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