Concept analysis: Role ambiguity in senior nursing students

Role ambiguity is a lack of clarity or uncertainty related to one's position or role. Role ambiguity has been documented in the literature in relationship to athletics, industry, business, education, and nursing. However, a concept analysis has not been performed. Therefore, the process of concept analysis outlined by Walker and Avant is now used to look at the concept of role ambiguity and its relevance to senior nursing students’ socialization and education into the profession of nursing. Attributes, antecedents, consequences, and empiric referents are discussed and theories commonly associated with role ambiguity are presented. At the end of the analysis, an operational definition is provided for use in exploring the concept of role ambiguity as it relates to senior nursing students’ articulation of the role of the professional nurse.     

Conceptualizing collaboration in nursing

Nurses practicing at every level need a clear definition of collaboration before applying the concept in daily practice. Additionally, a conceptual definition of collaboration in nursing assists nurse researchers in finding or developing instruments for measuring collaboration and attributes of collaboration, which will enhance research findings. Collaboration extends beyond communication and includes sharing, teamwork, and respect. Multiple databases including CINAHL, PubMed, and ERIC were searched using the keywords collaboration, nursing, concept analysis, sharing, respect, and teamwork. For this analysis, using Walker and Avant’s method, the conceptual definition of collaboration in nursing is an intraprofessional or interprofessional process by which nurses come together and form a team to solve a patient care or healthcare system problem with members of the team respectfully sharing knowledge and resources. Two instruments consistent with the conceptual definition of collaboration are The Mayo High Performance Teamwork Scale (MHPTS) and Team Strategies and Tools to Enhance Performance and Patient Safety (Team STEPPS) and these instruments are summarized in this study. Finally, case scenarios are given to illustrate exemplars of collaboration in clinical practice.     

Geriatric palliative care: Meeting the needs of a growing population

The implementation of effective geriatric palliative care (PC) services will be increasingly important as the number of patients ages ≥65 years continues to grow. However, literature characterizing the utilization of PC services by older adults remains scant. The objective of these analyses was to characterize the nature and outcomes of PC services for older adults. A retrospective analysis of records of inpatient PC consultations provided to patients ≥65 years at an academic hospital was performed (N = 743). Logistic regressions identified factors associated with goals of care discussions (GOC), end-of-life (EOL) coordination, and hospital readmission. Differences between older adult subgroups (i.e., 65–84 years and 85 years and older) were also examined. Discharge to home was associated with higher odds of readmission and discharge to hospice or having a GOC discussion was associated with lower odds of readmission. Those patients who were 85 years or older were significantly less likely to have cancer or to be referred for pain management, and more likely to be referred for GOC discussions and discharged to hospice. This study revealed dynamic factors associated with PC consultation for older adults. GOC discussions in initial PC consultations for older patients might reduce the odds of hospital readmission. Additionally, the needs of patients ages 85 and older appear distinct from the traditional PC cancer model.     

Care planning for long‐term conditions – a concept mapping

Objective

This article focuses on approaches within clinical practice that seek to actively involve patients with long‐term conditions (LTCs) and how professionals may understand and implement them. Personalized care planning is one such approach, but its current lack of conceptual clarity might have impeded its widespread implementation to date. A variety of overlapping concepts coexist in the literature, which have the potential to impair both clinical and research agendas. The aim of this article is therefore to explore the meaning of the concept of care planning in relation to other overlapping concepts and how this translates into clinical practice implementation.

Methods

Searches were conducted in the Cochrane database for systematic reviews, CINHAL and MEDLINE. A staged approach to conducting the concept mapping was undertaken, by (i) an examination of the literature on care planning in LTCs; (ii) identification of related terms; (iii) locating reviews of those terms. Retrieved articles were subjected to a content analysis, which formed the basis of our concept maps. (iv) We then appraised these against knowledge and experience of the implementation of care planning in clinical practice.

Results and Conclusions

Thirteen articles were retrieved, in which the core importance of patient‐centredness, shared decision making and self‐management was highlighted. Literature searches on these terms retrieved a further 24 articles. Our concept mapping exercise shows that whilst there are common themes across the concepts, the differences between them reflect the context and intended outcomes within clinical practice. We argue that this clarification exercise will allow for further development of both research and clinical implementation agendas.     

Direct inhibition of rat leydig cell function by tamoxifen

The effects of tamoxifen on rat testicular steroidogenesis were studied using dispersed interstitial cells. Tamoxifen significantly inhibited LH-, and 8-bromo-adenosine 3′,5′-monophosphate (8-bromo-cyclic AMP)-stimulated testosterone synthesis in a dose-dependent manner. Tamoxifen (10^?5M) also reduced LH-stimulated cyclic AMP formation. The addition of equimolar concentrations of 17β-estradiol or tamoxifen separately to interstitial cells resulted in similar inhibition of LH-stimulated testosterone synthesis. When equimolar concentrations of 17β-estradiol and tamoxifen were added concomitantly to interstitial cells, the inhibition was additive. Present studies demonstrate that tamoxifen has direct inhibitory effects on testicular steroidogenesis: both at the plasma membrane resulting in decreased cyclic AMP formation and also at steps subsequent to cyclic AMP.     

Clinical and electrophysiologic assessment of oral flecainide acetate for recurrent ventricular tachycardia: Evidence for exacerbation of electrical instability

Four patients with recurrent, symptomatic ventricular tachycardia (VT) refractory to conventional antiarrhythmic agents were given flecainide acetate to control arrhythmias. Ventricular stimulation studies were performed in all patients before and 1 to 2 weeks after initiation of oral flecainide therapy. Before flecainide, all patients had easily inducible VT that was morphologically identical to their spontaneously occurring arrhythmia. Flecainide increased the mean PR interval (from 0.17 to 0.23 second), mean QRS duration (from 0.08 to 0.12 second) and mean ventricular effective refractory period (from 235 to 270 ms). Mean corrected QT interval did not change (0.51 second).In 2 patients, VT could not be induced during follow-up stimulation studies. One patient has been treated successfully for 10 months, with no clinically apparent episodes of VT. One patient had recurrent nonsustained VT and was withdrawn from the study as a treatment failure after 6 months of therapy. Two patients had inducible, polymorphous VT that degenerated into ventricular fibrillation that required 2 countershocks before the successful restoration of sinus rhythm. One of these patients had VT stimulation by atrial pacing at a cycle length of 320 ms in the postflecainide electrophysiologic study. VT was not inducible by atrial pacing during this patient's preflecainide study.Thus, sustained oral flecainide administration may precipitate serious electrical instability in susceptible patients, and ventricular stimulation studies and other clinical variables may be useful in selecting patients with recurrent VT who may benefit or may be endangered by oral flecainide therapy.