Indentation Fracture of Bovine Cortical Bone: Acoustic Emission Technique

Indentation cutting may result in microcracking and main crack growth which was previously reported. In this study, we recorded the AE signals produced by cracking processes during cutting on cortical bone, measuring the cutting force and correlating between load-displacement curves and AE activities

German translation, cultural adaptation and validation of the Person-Centred Practice Inventory—Staff (PCPI-S)

Background The person-centred practice framework represents the cornerstone of a middle-range theory. Internationally, person-centredness has become an increasingly common topic. The measurement of the existence of a person-centred culture is complex and subtle. The Person-Centred Practice Inventory—Staff (PCPI-S) measures clinicians’ experience of a person-centred culture in their practice. The PCPI-S was developed in English. Therefore, the aims of this study were (1) to translate the PCPI-S into German and to cross-culturally adapt and test in the acute care setting (PCPI-S aG Swiss) and (2) to investigate the psychometric properties of the PCPI-S aG Swiss. Methods The two-phase investigation of this cross-sectional observational study followed the guidelines and principles of good practice for the process of translation and cross-cultural adaptation of self-reporting measures. Phase 1 involved an eight-step translation and cultural adaptation of the PCPI-S testing in an acute care setting. In Phase 2, psychometric retesting and statistical analysis based on a quantitative cross-sectional survey were undertaken. To evaluate the construct validity, a confirmatory factor analysis was implemented. Cronbach’s alpha was used to determine the internal consistency. Results A sample of 711 nurses working in a Swiss acute care setting participated in testing the PCPI-S aG Swiss. Confirmatory factor analysis indicated a good overall model fit, validating the strong theoretical framework, which underpins the PCPI-S aG Swiss. Cronbach’s alpha scores demonstrated excellent internal consistency. Conclusion The chosen procedure ensured cultural adaptation to the German-speaking part of Switzerland. The psychometric results were good to excellent and comparable with other translations of the instrument

Detection of Microcracks During Bone Cutting Using Acoustic Emission Techniques

Surgeons may use a number of cutting instruments such as osteotomes and chisels to cut bone during operative procedures. The initial loading of cortical bone during the cutting process results in the formation of microcracks in the vicinity of the cutting zone with main crack propagation to failure occurring with continued loading; microcracking acts as a stimulus for main crack formation and has also been shown to occur during the propagation of the main crack. It has also been reported that Acoustic Emission (AE) is generated due to microcrack formation and crack growth, prior to, and during final fracture in tensile loading of bovine and human cortical bone. In this study, we recorded the number of AE hits and AE signal amplitudes during monotonic indentation cutting of cortical bone, to correlate between the intensity and duration of the signals and micro and macro crack formation and propagation

Analysis of Indentation Loading of Cortical Bone Using Acoustic Emission Techniques

In this study, we recorded the number of Acoustic emission (AE) hits and related AE energy during indentation fracture of cortical bone using a PAC PCI-2 card and pico sensor. A threshold value of 43dB was used to filter premature trigger due to background noise. Registered AE hits had more than one count (threshold crossing). Amplifier gain was set at 40dB with a (0.1-1) MHz band pass filter. 8mm cubes of cortical bones were indented in the longitudinal direction at constant crosshead speed of 1 mm min-1 using a large 2D, 50˚ wedge indenter. We hypothesised that signals occurring as a result of microcracking would have low AE energy and occur prior to and during the period of maximum load whereas those associated with main crack propagation would have high AE energy and occur at fracture only

An exploration of person-centredness in practice

\u27Person-centredness\u27 is a term that is becoming increasingly familiar within health and social care at a global level; it is being used to describe a standard of care that ensures the patient/client is at the centre of care delivery. In this article we explore the relevance of person-centredness in the context of nursing, taking account of the ongoing critical debate and dialogue regarding developments in this field. Person-centredness is recognised as a multidimensional concept. The complexity of the concept contributes to the challenge of articulating its shared meaning and describing how it can be applied in practice. The aim of this paper is to explore some of the issues pertaining to language and conceptual clarity, with a view to making connections and increasing our shared understanding of person-centred care in a way that can impact nursing practice. We begin by describing the development of the concept of person-centredness, after which we discuss the synergies with patient-centredness and other related terms, and consider how nurses can operationalise person-centredness in their practice

Prescribing of Psychoactive Drugs for Older People in Nursing Homes: An Analysis of Treatment Culture

BACKGROUND: There is increasing interest in how culture may affect the quality of healthcare services, and previous research has shown that ‘treatment culture’—of which there are three categories (resident centred, ambiguous and traditional)—in a nursing home may influence prescribing of psychoactive medications. OBJECTIVE: The objective of this study was to explore and understand treatment culture in prescribing of psychoactive medications for older people with dementia in nursing homes. METHOD: Six nursing homes—two from each treatment culture category—participated in this study. Qualitative data were collected through semi-structured interviews with nursing home staff and general practitioners (GPs), which sought to determine participants’ views on prescribing and administration of psychoactive medication, and their understanding of treatment culture and its potential influence on prescribing of psychoactive drugs. Following verbatim transcription, the data were analysed and themes were identified, facilitated by NVivo(®) and discussion within the research team. RESULTS: Interviews took place with five managers, seven nurses, 13 care assistants and two GPs. Four themes emerged: the characteristics of the setting, the characteristics of the individual, relationships and decision making. The characteristics of the setting were exemplified by views of the setting, daily routines and staff training. The characteristics of the individual were demonstrated by views on the personhood of residents and staff attitudes. Relationships varied between staff within and outside the home. These relationships appeared to influence decision making about prescribing of medications. The data analysis found that each home exhibited traits that were indicative of its respective assigned treatment culture. CONCLUSION: Nursing home treatment culture appeared to be influenced by four main themes. Modification of these factors may lead to a shift in culture towards a more flexible, resident-centred culture and a reduction in prescribing and use of psychoactive medication. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s40801-016-0066-5) contains supplementary material, which is available to authorized users

So, what's in a title? The paradox of nursing professors!

From Crossref via Jisc Publications RouterHistory: epub 2019-03-07, issued 2019-03-0