Educational needs of nursing home staff: does a needs-based palliative care course make a difference?

OBJECTIVE: In Singapore, more elderly are living in nursing homes (NHs), with a resultant increase in deaths occurring in NHs. However, palliative care training is limited in Singapore's core nursing curriculum, and many NHs rely on foreign-trained staff who may not have previous palliative care training. Our study aimed to evaluate whether a needs-based course can improve the palliative care knowledge and attitudes of NH nurses in Singapore. METHODS: Twenty-five nurses participated in the study. The intervention was an 8-week palliative care course developed based on needs assessment and led by a multidisciplinary faculty. A 50-item knowledge test was administered at baseline and 0 day and 3 and 6 months postcourse. Semistructured interviews were conducted at 3 months to assess for changes in attitudes and nursing practices. RESULTS: The mean knowledge score increased significantly from 31.4 (±4.4) precourse to 35.1 (±5.1) at 3 months. Knowledge scores in end-of-life care increased up to 6 months, and scores for pain and symptom management increased significantly at 3 months. Participants reported a positive change with improved communication skills and increased compassion. There was a lack of opportunities to apply some new knowledge and skills due to regulations and perceived residents' preferences to engage more local senior staff. CONCLUSION: The multidisciplinary needs-based palliative care course using various teaching modalities with follow-up knowledge tests helped to increase knowledge and improve communication skills and attitudes of NH nurses towards palliative care. The increase in knowledge and positive change in attitudes was noted to be sustained for at least 3 months postcourse.

Correction: Early assessment of tumor response to photodynamic therapy using combined diffuse optical and diffuse correlation spectroscopy to predict treatment outcome.

[This corrects the article DOI: 10.18632/oncotarget.15720.].

Early assessment of tumor response to photodynamic therapy using combined diffuse optical and diffuse correlation spectroscopy to predict treatment outcome.

Photodynamic therapy (PDT) of cancer involves the use of a photosensitizer that can be light-activated to eradicate tumors via direct cytotoxicity, damage to tumor vasculature and stimulating the body's immune system. Treatment outcome may vary between individuals even under the same regime; therefore a non-invasive tumor response monitoring system will be useful for personalization of the treatment protocol. We present the combined use of diffuse optical spectroscopy (DOS) and diffuse correlation spectroscopy (DCS) to provide early assessment of tumor response. The relative tissue oxygen saturation (rStO2) and relative blood flow (rBF) in tumors were measured using DOS and DCS respectively before and after PDT with reference to baseline values in a mouse model. In complete responders, PDT-induced decreases in both rStO2 and rBF levels were observed at 3 h post-PDT and the rBF remained low until 48 h post-PDT. Recovery of these parameters to baseline values was observed around 2 weeks after PDT. In partial responders, the rStO2 and rBF levels also decreased at 3 h post PDT, however the rBF values returned toward baseline values earlier at 24 h post-PDT. In contrast, the rStO2 and rBF readings in control tumors showed fluctuations above the baseline values within the first 48 h. Therefore tumor response can be predicted at 3 to 48 h post-PDT. Recovery or sustained decreases in the rBF at 48 h post-PDT corresponded to long-term tumor control. Diffuse optical measurements can thus facilitate early assessment of tumor response. This approach can enable physicians to personalize PDT treatment regimens for best outcomes.

Hemodynamic monitoring of Chlorin e6-mediated photodynamic therapy using diffuse optical measurements.

Tumor response during photodynamic therapy (PDT) is heavily dependent on treatment parameters such as light dose, photosensitizer concentration, and tissue oxygenation. Therefore, it is desirable to have a real-time hemodynamic monitoring device in order to fine-tune the parameters and improve PDT efficacy. In this paper, such a tumor response monitoring system was built incorporating both frequency domain diffuse optical spectroscopy (FD-DOS) and diffuse correlation spectroscopy (DCS), which enables concurrent monitoring of tissue oxygenation (StO2), total hemoglobin concentration (THC) and relative blood flow (rBF). The tumor metabolic rate of oxygen (TMRO2) was calculated by using the hemodynamic parameters. Mouse models bearing xenograft tumors were subjected to chlorin e6 (Ce6)-mediated PDT, and the four parameters were monitored with varying treatment conditions. The results show (1) At 3 h post-PDT, rStO2, rBF and rTMRO2 exhibited sharp PDT-induced decreases in responders (>40% reduction in tumor volume). Statistically significant difference between responders and non-responders were observed in rStO2 and rBF, but not in rTMRO2. (2) Non-responders show gradual recovery of rStO2, rBF and rTMRO2 from ∼24 h post-PDT, while responder group did not show recovery up until 48 h post-PDT. Long-term study results up to 2 weeks are also shown. It suggests the hybrid diffuse optical system is not only capable of real-time treatment monitoring, but also able to extract tumor metabolic rate of oxygen to provide more insights about therapy mechanism. Translation of this technique to the clinic will make a quick prognosis feasible and help with treatment optimization.