Informal caregivers (IC) are key to enabling home deaths, where preferred, at the end-of-life. Significant morbidity from advanced cancer can make caregiving burdensome. However, knowledge about the nature of the caregiving burden for caregivers in Singapore is limited. Hence, the key objective in this study was to examine the impact of the caregiving burden on quality of life (QOL), mental health and work capacity among local ICs. Eligible English-speaking ICs of hospitalized advanced cancer patients were recruited through non-random sampling. The Zarit Burden Interview (ZBI), Caregiver Quality of Life Index—Cancer (CQOLC), Center for Epidemiologic Studies Depression Scale—Revised (CESD-R), and Work Productivity and Activity Impairment Questionnaire (WPAI) were interviewer-administered to eligible ICs. Altogether, 16 ICs were surveyed. The mean age of ICs was 43.8 years. Most were children of patients (43.8%), and eight ICs had high burden (ZBI > 17). Those with ZBI > 17 had lower QOL, higher depression scores as well as greater work and activity impairment. In conclusion, high caregiver burden has adverse effects on QOL, mental health and work productivity. Non-physical elements of caregiving (particularly financial and decision-making) and increased number of care roles undertaken by a single IC contribute to high burden. Future interventions for caregiving burden in Singapore should also address the financial and decision-making aspects of caregiving. Outsourcing selected aspects of the caregiving role to community services may reduce the number of caregiving aspects undertaken by a single IC and caregiver burden.
Background: The impact and consequences of cancer on the patients and their family caregivers (FCs) are closely intertwined. Caregivers' burdens can be increased due to the patients' unmet needs and unresolved problems. Additionally, the caregivers' unmet needs may adversely affect their own well-being and the patients' health outcomes. This study aims to determine the palliative care needs and the factors associated with these needs in patients with advanced solid cancer and their FCs. Methods: In a cross-sectional survey, 599 patients with advanced solid tumours and 599 FCs were recruited from the largest ambulatory cancer centre and the inpatient ward of the largest hospital in Singapore. Determinants of patients' and FCs' needs were assessed by the Comprehensive Needs Assessment Tool (CNAT) and CNAT-C respectively. Clinical characteristics of patients were obtained from medical records. Results: The FCs (median age 51 years) were younger than the patients (median age 62 years), and were mostly female (62.6%) whereas the gender distribution of patients was quite balanced (49.2% male and 50.8% female). Both patients and FCs had "information" and "practical support" in their top three domains of palliative care needs. The second highest domain of needs was "psychological problems" (16.4 ± 21.5) in patients and "health-care staff" (23.4 ± 26.5) in FCs. The item that had the highest need score in "information" domain for both patients and FCs was "financial support for patients, either from government and/ or private organizations". Under clinical setting, the inpatients (19.2 ± 16.4) and their FCs (26.0 ± 19.0) tend to have higher needs than the outpatients (10.5 ± 12.1) and their FCs (14.7 ± 14.3). In terms of palliative care, higher total CNAT score was observed in both patients (16.6 ± 12.9 versus 13.3 ± 15.2) and their FCs (25.1 ± 18.6 versus 17.7 ± 16.7) who received palliative care. In terms of patients' KPS scores, patients with lower KPS scores tend to have higher needs. Conclusion: Overall, the findings confirm that patients with advanced cancer and their FCs have many palliative care needs irrespective of their clinical settings. Initiatives and interventions for the development of a comprehensive support system for both patients with advanced cancer and their FCs are warranted and can be derived from these findings.
BackgroundFentanyl-induced emesis (FIE) is a distressing adverse effect in the postoperative setting. The genetic basis of FIE remains largely unknown, therefore, we examined whether it was associated with specific genetic variants of OPRM1, the gene encoding the main receptor target of fentanyl.MethodsIn this prospective case-control study, 193 women undergoing gynaecological surgery under a standardized anaesthetic with a low emetogenic risk were enrolled. Inclusion and exclusion criteria were designed to select extreme phenotypes as well as to ensure that most major confounders for FIE were either excluded or present in all patients. To control for unforeseen intra- and postoperative confounders for FIE, only 161 patients were further analysed, out of which 10 were categorized as having FIE, defined by the presence of at least one of three symptoms: nausea, vomiting or retching that was likely to be fentanyl-related. To identify SNPs relevant to FIE in our population, DNA from 40 controls and 10 cases was sequenced at the following OPRM1 regions: 3 kbp of the promoter, main and alternative exons as well as 2 kbp of the 3′ downstream region. The genotype of the significant SNP was further determined in the remaining 111 controls.ResultsThe incidence of FIE was 6.2%. Initial sequencing of 10 cases and 40 controls identified 25 SNPs. Only rs540825, a non-synonymous SNP in the splice variant, MOR1X, showed a significant association with FIE post-Bonferroni correction. This SNP was further examined in the remaining 111 controls which confirmed its significant association with FIE (p = 0.019 post-Bonferroni, OR: 5.6, 95% CI: 1.42–21.91).ConclusionsThis is the first report of an association between the occurrence of FIE in Chinese women undergoing gynaecological surgery and an OPRM1 splice variant SNP, rs540825.
Aims: The 59-item Comprehensive Needs Assessment Tool (CNAT) for cancer patients is an English language survey developed in South Korea. The objective of this study was to validate the English version of CNAT in advanced cancer patients in Singapore. Methods: This was a cross-sectional survey where advanced cancer patients completed the CNAT in English. Confirmatory factor analysis was used to assess construct validity. For known groups validity, independent samples t -test was used to compare CNAT scores based on the Karnofsky performance status and outpatient versus inpatient setting. Cronbach's alpha was used to measure internal consistency. Results: A total of 328 advanced cancer patients were recruited. The mean age was 59.6 years and 49.1% were male. Majority (68.0%) were Chinese, 20.4% were Malay, 7.9% were Indian, and 3.7% were of other ethnicities. The 7-factor model previously established in Korea showed sufficient construct validity with root mean square error of approximation 0.037 and comparative fit index 0.944. All 59 items had a factor loading ≥0.5. Group invariance test showed no difference in the pattern of factor loadings between ethnic Chinese and other ethnic groups ( P = 0.155). For known groups validity, there were significant differences in CNAT scores by performance status and outpatient versus inpatient setting. The CNAT total and factor scores showed good internal consistency with Cronbach's alpha of between 0.80 and 0.937. Conclusions: The CNAT showed construct and known-group validity and internal consistency in this study sample and can be used to assess the unmet needs of advanced cancer patients in the Singapore context.
Large-scale clinical data supports the use of a Pareto-based quantitative framework for a workforce comprising of mainly generalist PC staff supported by smaller numbers of PC specialists.
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