Objective To investigate the predictive value of the prognostic nutritional index (PNI) for 28-day all-cause mortality in patients with chronic obstructive pulmonary disease (COPD) in intensive care unit (ICU). Methods The relationship between PNI and short-term mortality in COPD patients was analysed using COX proportional hazards and restricted cubic spline (RCS) models. Receiver operating characteristic (ROC) curves were plotted and area under the ROC curve (AUC) was calculated to assess the predictive performance of PNI. The optimal cut-off value for PNI was determined using the Youden index, and the data were divided into a low PNI group and a high PNI group. Kaplan-Meier curves were then constructed and the log-rank test was used to assess differences in survival between the two groups. Results A total of 980 COPD patients were included in the study. Multivariable COX regression analysis showed that PNI was an independent factor influencing short-term mortality in the severe COPD patients (HR=0.972, 95%CI 0.948 - 0.995, P=0.019). RCS curve results showed a non-linear relationship between PNI and short-term mortality in the severe COPD patients (P for non-linear=0.032), with the risk of death gradually decreasing as PNI increased. The ROC curve indicated that PNI had some predictive power, comparable to that of SOFA score [(AUCPNI=0.693) vs. (AUCSOFA=0.672)]. Kaplan-Meier curve analysis showed a significant difference in survival time between the low (≤38.3) PNI group and the high (>38.3) PNI group (P<0.05). Conclusions PNI has a certain predictive role for short-term all-cause mortality in patients with severe COPD. Patients with low PNI at ICU admission have a higher risk of short-term mortality.
ObjectiveTo systematically review the efficacy and safety of 89SrCl2 for bone metastases.MethodsDatabases including PubMed, EMbase, The Cochrane Library (Issue 12, 2016), MEDLINE, CBM, VIP, CNKI and WanFang Data were electronically searched from inception to December 2016 to collect randomized controlled trials (RCT) about 89SrCl2 in the treatment of bone metastases. Two reviewers independently screened literature, extracted data, and assessed the risk of bias of included studies. Then meta-analysis was performed by using RevMan 5.3 software.ResultsA total of 19 RCTs involving 1 899 patients were included. The results of meta-analysis showed that: compared to the group without 89SrCl2, group of 89SrCl2 combined with other treatments had benefits for complete relief of bone pain (RR=1.53, 95%CI 1.16 to 2.01, P=0.002), total relief of bone pain (RR=1.33, 95%CI 1.22 to 1.45, P<0.001), bone metastases complete response rate (RR=1.61, 95%CI 1.20 to 2.16, P=0.002), bone metastases total response rate (RR=1.61, 95%CI 1.26 to 2.08, P<0.001), improvement of quality of life (RR=1.44, 95%CI 1.06 to 1.97, P=0.02). The proportion of pain flare (RR=10.35, 95%CI 2.01 to 53.37, P=0.005), leucopenia (RR=2.49, 95%CI 1.84 to 3.37, P<0.001) and thrombocytopenia (RR=2.64, 95%CI 1.76 to 3.97, P<0.001) in the 89SrCl2 group were higher than that in the control group.Conclusion89SrCl2 combined with the other treatments is better for bone metastases than without 89SrCl2. Due to the limited quantity and quality of included studies, the above results should be verify by more high quality studies.
Musical emotion perception, as a key pathway to decoding the essence of human emotions, requires the analysis of its regulatory mechanisms for the development of precise neural modulation strategies. Although electroencephalography (EEG) signals can be used to capture the dynamic neural activities associated with music emotion processing, and virtual reality (VR) technology can offer immersive enhancement effects for emotion regulation, the interaction mechanism among the VR environment, music emotion and neural activity remains unclear. This study established a multimodal experimental paradigm of “VR environment-music stimulation-EEG response” and employed multi-band feature analysis to systematically elucidate the neural dynamics patterns of musical emotion perception during transitions between different virtual scenarios. The results demonstrated that the right temporal lobe exhibited significant electrophysiological changes when comparing real and virtual scenarios, while posterior brain regions were sensitive to differences in virtual environments. Furthermore, the environment exerted specific modulation on both low-frequency and high-frequency EEG activities, with the δ energy percentage demonstrating a context-dependent differentiation in music emotion perception. This study, through virtual scenario-modulated music emotion perception experiments, systematically reveals the frequency-band-specific modulation effects of environmental factors on music emotion, establishes the energy ratio of the δ band as a key biomarker for environment-emotion interaction, and provides an important theoretical basis and quantitative assessment methods for the development of immersive emotion regulation strategies and clinical psychological interventions.
