Preparation of Waterborne Silicone-Modified Polyurethane Nanofibers and the Effect of Crosslinking Agents on Physical Properties.

Silicone-modified polyurethane (PUSX) refers to the introduction of a silicone short chain into the polyurethane chain to make it have the dual properties of silicone and polyurethane (PU). It can be used in many fields, such as coatings, films, molding products, adhesives, and so on. The use of organic solvents to achieve the fiberization of silicone-modified polyurethane has been reported. However, it is challenging to achieve the fiberization of silicone-modified polyurethane based on an environmentally friendly water solvent. Herein, we report a simple and powerful strategy to fabricate environmentally friendly waterborne silicone-modified polyurethane nanofiber membranes through the addition of polyethylene glycol (PEG) with different molecular weights using electrospinning technology and in situ doping with three crosslinking agents with different functional groups (a polyoxazoline crosslinking agent, a polycarbodiimide crosslinking agent, and a polyisocyanate crosslinking agent) combined with various heating treatment conditions. The influence of PEG molecular weight on fiber formation was explored. The morphology, structure, water resistance, and mechanical properties were analyzed regarding the effect of the introduction of silicone into PU. The effects of the type and content of crosslinking agent on the morphology and physical properties of PUSX nanofiber membranes are discussed. These results show that the introduction of silicone can improve the water resistance and high temperature resistance of waterborne PU, and the addition of a crosslinking agent can further improve the water resistance of the sample, so that the sample can maintain good morphology after immersion. Crosslinking agents with different functional groups had different effects on the mechanical properties of PUSX nanofiber membranes due to different reactions. Among them, the oxazoline crosslinking agent had a significant effect on improving tensile strength, while the isocyanate crosslinking agent had a significant effect on improving the elongation at break. The PUSX nanofiber membrane prepared in this work did not use organic solvents that were harmful to humans and the environment, and it can be used in outdoor textiles, oil-water separation, medical health, and other fields.

Factors associated with surrogate families' life-sustaining treatment preferences for patients at home or in a geriatric health service facility: A cross-sectional study.

OBJECTIVE: Recently, end-of-life preference in palliative care has been gaining attention in Japan. The Ministry of Health, Labor, and Welfare established the Japanese basic policy in November 2018. Patients' decision-making is recommended; however, patients with dementia or other disorders cannot make such decisions by themselves. Thus, healthcare providers may contact surrogates and consider their backgrounds for better decision-making. Hence, the preferences of home caregivers' and geriatric health service facility (GHSF) residents' families on patient life-sustaining treatment (LST) were investigated. METHOD: This cross-sectional study involved home caregivers' and GHSF residents' families in Japan. We distributed 925 self-reported questionnaires comprising items, such as the number of people living together, care duration, comprehension of doctor's explanations, the Patient Health Questionnaire (PHQ)-9 and Short Form (SF)-8, and families' LST preference for patients. RESULTS: In all, 619 valid responses were obtained [242 men and 377 women (309 in the HOME Caregivers Group, response rate = 61.1%; 310 in the GHSF Group, response rate = 74.0%)]. LST preference was significantly associated with sex, the number of people living together, care duration, and comprehension of doctors' explanations in the HOME Caregivers Group but was not significantly associated with the GHSF Group. Furthermore, PHQ-9/SF-8 scores were not significantly associated with LST preference. SIGNIFICANCE OF RESULTS: There were many differences in opinions about LST preference between home caregivers' and GHSF residents' families. The results suggested that the burden of nursing care was greater and harder in home caregiver families, and these factors may be related to the LST preference for a patient.

Comparison of the prevalence and associated factors of hyperactive delirium in advanced cancer patients between inpatient palliative care and palliative home care.

BACKGROUND: Hyperactive delirium is known to increase family distress and the burden on health care providers. We compared the prevalence and associated factors of agitated delirium in advanced cancer patients between inpatient palliative care and palliative home care on admission and at 3 days before death. METHODS: This was a post hoc exploratory analysis of two multicenter, prospective cohort studies of advanced cancer patients, which were performed at 23 palliative care units (PCUs) between Jan and Dec 2017, and on 45 palliative home care services between July and Dec 2017. RESULTS: In total, 2998 patients were enrolled and 2829 were analyzed in this study: 1883 patients in PCUs and 947 patients in palliative home care. The prevalence of agitated delirium between PCUs and palliative home care was 5.2% (95% CI: 4.2% - 6.3%) vs. 1.4% (0.7% - 2.3%) on admission (p < 0.001) and 7.6% (6.4% - 8.9%) vs. 5.4% (4.0% - 7.0%) 3 days before death (p < 0.001). However, multivariate logistic regression analysis revealed that the place of care was not significantly associated with the prevalence of agitated delirium at 3 days before death after adjusting for prognostic factors, physical risk factors, and symptoms. CONCLUSIONS: There was no significant difference in the prevalence of agitated delirium at 3 days before death between inpatient palliative care and palliative home care after adjusting for the patient background, prognostic factors, symptoms, and treatment.

Factors Relating to Caregivers' Preference for Advance Care Planning of Patients in Japan: A Cross-Sectional Study.

OBJECTIVES: The aim of this study was to examine the preferences of home caregivers on patient advance care planning (ACP), including life-sustaining treatment (LST) and the factors relating to these preferences. BACKGROUND: Personalized ACP aims to respect the autonomy and choices of terminally ill patients regarding end-of-life care. However, there have been cases wherein doctors must instead discuss ACP with surrogates (including caregivers) for various reasons such as dementia, intractable neurologic diseases, and cerebrovascular accident. METHODS: In this cross-sectional study, self-written questionnaires (filled by individuals themselves) were distributed to 506 in-home caregivers in 6 Japanese prefectures; the questionnaires contained items on caregiver and patient demographics, number of people living together in a caregiver's home (aside from patients), care duration, comprehension level of doctors' explanations regarding their patient's condition, patient diseases, whether caregivers have or have not told patients about their disease, level of nursing care, and caregiver LST preference (preferred or not preferred). The questionnaire package also contained the Burden Index of Caregiver-11, Patient Health Questionnaire-9, and Short Form-8 Health Survey. RESULTS: Valid responses were obtained from 309 caregivers. More than half of them were not sure of their patient's LST preference. Sex, number of people living together in a care home, comprehension level of doctors' explanations, and care duration were found to be the significant factors relating to caregivers' LST preference (P < .05). CONCLUSION: Health providers should be cognizant of the background factors relating to caregiver ACP preference when deciding on LST for terminal patients.

Identification of quality indicators of end-of-life cancer care from medical chart review using a modified Delphi method in Japan.

End-of life care is one of the principle components of cancer care. Measurement of the quality of care provided for end-of-life cancer patients is an important issue. The aim of this study was to identify the quality indicators (QIs) for end-of-life cancer care for Japanese patients using a medical chart review. A modified Delphi method for the development of QIs was adopted. Seventeen multi-professional specialists participated by rating the appropriateness and feasibility of potential QIs. Thirty QIs for end-of-life cancer care were ultimately identified within 4 domains: (1) symptom control, (2) decision-making and preference of care, (3) family care, and (4) psychosocial and spiritual concerns. These QIs will be useful for monitoring and evaluating end-of-life care for Japanese cancer patients. The QIs are feasible for use in any clinical setting and cover a comprehensive area in accordance with the World Health Organization's (WHO) definition of palliative care including physical, psychosocial, and spiritual concerns.

DGGE method for analyzing 16S rDNA of methanogenic archaeal community in paddy field soil.

A denaturing gradient gel electrophoresis (DGGE) method for analyzing 16S rDNA of methanogenic archaeal community in paddy field soil is presented. Five specific primers for 16S rDNA of methanogenic archaea, which were modified from the primers for archaea, were first evaluated by polymerase chain reaction and DGGE using genomic DNAs of 13 pure culture strains of methanogenic archaea. The DGGE analysis was possible with two primer pairs (0348aF-GC and 0691R; 0357F-GC and 0691R) of the five pairs tested although 16S rDNA of some non-methanogenic archaea was amplified with 0348aF-GC and 0691R. These two primer pairs were further evaluated for use in analysis of methanogenic archaeal community in Japanese paddy field soil. Good separation and quality of patterns were obtained in DGGE analysis with both primer pairs. A total of 41 DNA fragments were excised from the DGGE gels and their sequences were determined. All fragments belonged to methanogenic archaea. These results indicate that the procedure of DGGE analysis with the primer pair 0357F-GC and 0691R is suitable for investigating methanogenic archaeal community in paddy field soil.